/erts/emulator/beam/erl_alloc.c

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/*
 * %CopyrightBegin%
 *
 * Copyright Ericsson AB 2002-2011. All Rights Reserved.
 *
 * The contents of this file are subject to the Erlang Public License,
 * Version 1.1, (the "License"); you may not use this file except in
 * compliance with the License. You should have received a copy of the
 * Erlang Public License along with this software. If not, it can be
 * retrieved online at http://www.erlang.org/.
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 * the License for the specific language governing rights and limitations
 * under the License.
 *
 * %CopyrightEnd%
 */


/*
 * Description:	Management of memory allocators.
 *
 * Author: 	Rickard Green
 */

#ifdef HAVE_CONFIG_H
#  include "config.h"
#endif
#define ERTS_ALLOC_C__
#define ERTS_ALC_INTERNAL__
#include "sys.h"
#define ERL_THREADS_EMU_INTERNAL__
#include "erl_threads.h"
#include "global.h"
#include "erl_db.h"
#include "erl_binary.h"
#include "erl_bits.h"
#include "erl_instrument.h"
#include "erl_mseg.h"
#include "erl_monitors.h"
#include "erl_bif_timer.h"
#if defined(ERTS_ALC_T_DRV_SEL_D_STATE) || defined(ERTS_ALC_T_DRV_EV_D_STATE)
#include "erl_check_io.h"
#endif

#define GET_ERL_GF_ALLOC_IMPL
#include "erl_goodfit_alloc.h"
#define GET_ERL_BF_ALLOC_IMPL
#include "erl_bestfit_alloc.h"
#define GET_ERL_AF_ALLOC_IMPL
#include "erl_afit_alloc.h"
#define GET_ERL_AOFF_ALLOC_IMPL
#include "erl_ao_firstfit_alloc.h"


#define ERTS_ALC_DEFAULT_MAX_THR_PREF 16

#if defined(SMALL_MEMORY) || defined(PURIFY) || defined(VALGRIND)
#define AU_ALLOC_DEFAULT_ENABLE(X)	0
#else
#define AU_ALLOC_DEFAULT_ENABLE(X)	(X)
#endif

#ifdef DEBUG
static Uint install_debug_functions(void);
#if 0
#define HARD_DEBUG
#ifdef __GNUC__
#warning "* * * * * * * * * * * * * *"
#warning "* HARD DEBUG IS ENABLED!  *"
#warning "* * * * * * * * * * * * * *"
#endif
#endif
#endif

ErtsAllocatorFunctions_t erts_allctrs[ERTS_ALC_A_MAX+1];
ErtsAllocatorInfo_t erts_allctrs_info[ERTS_ALC_A_MAX+1];
ErtsAllocatorThrSpec_t erts_allctr_thr_spec[ERTS_ALC_A_MAX+1];

#define ERTS_MIN(A, B) ((A) < (B) ? (A) : (B))
#define ERTS_MAX(A, B) ((A) > (B) ? (A) : (B))

typedef union {
    GFAllctr_t gfa;
    char align_gfa[ERTS_ALC_CACHE_LINE_ALIGN_SIZE(sizeof(GFAllctr_t))];
    BFAllctr_t bfa;
    char align_bfa[ERTS_ALC_CACHE_LINE_ALIGN_SIZE(sizeof(BFAllctr_t))];
    AFAllctr_t afa;
    char align_afa[ERTS_ALC_CACHE_LINE_ALIGN_SIZE(sizeof(AFAllctr_t))];
    AOFFAllctr_t aoffa;
    char align_aoffa[ERTS_ALC_CACHE_LINE_ALIGN_SIZE(sizeof(AOFFAllctr_t))];
} ErtsAllocatorState_t;

static ErtsAllocatorState_t sbmbc_alloc_state;
static ErtsAllocatorState_t std_alloc_state;
static ErtsAllocatorState_t ll_alloc_state;
#if HALFWORD_HEAP
static ErtsAllocatorState_t sbmbc_low_alloc_state;
static ErtsAllocatorState_t std_low_alloc_state;
static ErtsAllocatorState_t ll_low_alloc_state;
#endif
static ErtsAllocatorState_t sl_alloc_state;
static ErtsAllocatorState_t temp_alloc_state;
static ErtsAllocatorState_t eheap_alloc_state;
static ErtsAllocatorState_t binary_alloc_state;
static ErtsAllocatorState_t ets_alloc_state;
static ErtsAllocatorState_t driver_alloc_state;

ErtsAlcType_t erts_fix_core_allocator_ix;
#ifdef ERTS_ALC_N_MIN_A_FIXED_SIZE
static void *(*fix_core_allocator)(ErtsAlcType_t, void *, Uint);
static void *fix_core_extra;
static void *fix_core_alloc(Uint size)
{
    void *res;
    res = (*fix_core_allocator)(ERTS_ALC_T_UNDEF, fix_core_extra, size);
    if (erts_mtrace_enabled)
	erts_mtrace_crr_alloc(res,
			      ERTS_ALC_A_FIXED_SIZE,
			      erts_fix_core_allocator_ix,
			      size);
    return res;
}
#endif

enum allctr_type {
    GOODFIT,
    BESTFIT,
    AFIT,
    AOFIRSTFIT
};

struct au_init {
    int enable;
    int thr_spec;
    enum allctr_type	atype;
    struct {
	AllctrInit_t	util;
	GFAllctrInit_t	gf;
	BFAllctrInit_t	bf;
	AFAllctrInit_t	af;
	AOFFAllctrInit_t aoff;
    } init;
    struct {
	int mmbcs;
	int lmbcs;
	int smbcs;
	int mmmbc;
    } default_;
};

#define DEFAULT_ALLCTR_INIT {		\
    ERTS_DEFAULT_ALLCTR_INIT,		\
    ERTS_DEFAULT_GF_ALLCTR_INIT,	\
    ERTS_DEFAULT_BF_ALLCTR_INIT,	\
    ERTS_DEFAULT_AF_ALLCTR_INIT,	\
    ERTS_DEFAULT_AOFF_ALLCTR_INIT       \
}

typedef struct {
    int erts_alloc_config;
#if HAVE_ERTS_MSEG
    ErtsMsegInit_t mseg;
#endif
    int trim_threshold;
    int top_pad;
    AlcUInit_t alloc_util;
    struct {
	int stat;
	int map;
	char *mtrace;
	char *nodename;
    } instr;
    struct au_init sbmbc_alloc;
    struct au_init sl_alloc;
    struct au_init std_alloc;
    struct au_init ll_alloc;
    struct au_init temp_alloc;
    struct au_init eheap_alloc;
    struct au_init binary_alloc;
    struct au_init ets_alloc;
    struct au_init driver_alloc;
#if HALFWORD_HEAP
    struct au_init sbmbc_low_alloc;
    struct au_init std_low_alloc;
    struct au_init ll_low_alloc;
#endif
} erts_alc_hndl_args_init_t;

#define ERTS_AU_INIT__ {0, 0, GOODFIT, DEFAULT_ALLCTR_INIT, {1,1,1,1}}

#define SET_DEFAULT_ALLOC_OPTS(IP)					\
do {									\
    struct au_init aui__ = ERTS_AU_INIT__;				\
    sys_memcpy((void *) (IP), (void *) &aui__, sizeof(struct au_init));	\
} while (0)

static void
set_default_sbmbc_alloc_opts(struct au_init *ip)
{
    SET_DEFAULT_ALLOC_OPTS(ip);
    ip->enable			= 0;
    ip->thr_spec		= 0;
    ip->atype			= BESTFIT;
    ip->init.bf.ao		= 1;
    ip->init.util.ramv		= 0;
    ip->init.util.mmsbc		= 0;
    ip->init.util.mmmbc		= 500;
    ip->init.util.sbct		= ~((UWord) 0);
    ip->init.util.name_prefix	= "sbmbc_";
    ip->init.util.alloc_no	= ERTS_ALC_A_SBMBC;
#ifndef SMALL_MEMORY
    ip->init.util.mmbcs 	= 2*1024*1024; /* Main carrier size */
#else
    ip->init.util.mmbcs 	= 1*1024*1024; /* Main carrier size */
#endif
    ip->init.util.ts 		= ERTS_ALC_MTA_SBMBC;
    ip->init.util.asbcst	= 0;
    ip->init.util.rsbcst	= 0;
    ip->init.util.rsbcmt	= 0;
    ip->init.util.rmbcmt	= 0;
    ip->init.util.sbmbct	= 0;
    ip->init.util.sbmbcs	= 0;
}

static void
set_default_sl_alloc_opts(struct au_init *ip)
{
    SET_DEFAULT_ALLOC_OPTS(ip);
    ip->enable			= AU_ALLOC_DEFAULT_ENABLE(1);
    ip->thr_spec		= 1;
    ip->atype			= GOODFIT;
    ip->init.util.name_prefix	= "sl_";
    ip->init.util.mmmbc		= 5;
    ip->init.util.alloc_no	= ERTS_ALC_A_SHORT_LIVED;
#ifndef SMALL_MEMORY
    ip->init.util.mmbcs 	= 128*1024; /* Main carrier size */
#else
    ip->init.util.mmbcs 	= 32*1024; /* Main carrier size */
#endif
    ip->init.util.ts 		= ERTS_ALC_MTA_SHORT_LIVED;
    ip->init.util.rsbcst	= 80;
#if HALFWORD_HEAP
    ip->init.util.force         = 1;
    ip->init.util.low_mem       = 1;
#endif

}

static void
set_default_std_alloc_opts(struct au_init *ip)
{
    SET_DEFAULT_ALLOC_OPTS(ip);
    ip->enable			= AU_ALLOC_DEFAULT_ENABLE(1);
    ip->thr_spec		= 1;
    ip->atype			= BESTFIT;
    ip->init.util.name_prefix	= "std_";
    ip->init.util.mmmbc		= 5;
    ip->init.util.alloc_no	= ERTS_ALC_A_STANDARD;
#ifndef SMALL_MEMORY
    ip->init.util.mmbcs 	= 128*1024; /* Main carrier size */
#else
    ip->init.util.mmbcs 	= 32*1024; /* Main carrier size */
#endif
    ip->init.util.ts 		= ERTS_ALC_MTA_STANDARD;
}

static void
set_default_ll_alloc_opts(struct au_init *ip)
{
    SET_DEFAULT_ALLOC_OPTS(ip);
    ip->enable			= AU_ALLOC_DEFAULT_ENABLE(1);
    ip->thr_spec		= 0;
    ip->atype			= BESTFIT;
    ip->init.bf.ao		= 1;
    ip->init.util.ramv		= 0;
    ip->init.util.mmsbc		= 0;
    ip->init.util.mmmbc		= 0;
    ip->init.util.sbct		= ~((UWord) 0);
    ip->init.util.name_prefix	= "ll_";
    ip->init.util.alloc_no	= ERTS_ALC_A_LONG_LIVED;
#ifndef SMALL_MEMORY
    ip->init.util.mmbcs 	= 2*1024*1024; /* Main carrier size */
#else
    ip->init.util.mmbcs 	= 1*1024*1024; /* Main carrier size */
#endif
    ip->init.util.ts 		= ERTS_ALC_MTA_LONG_LIVED;
    ip->init.util.asbcst	= 0;
    ip->init.util.rsbcst	= 0;
    ip->init.util.rsbcmt	= 0;
    ip->init.util.rmbcmt	= 0;
    ip->init.util.sbmbct	= 0;
    ip->init.util.sbmbcs	= 0;
}

static void
set_default_temp_alloc_opts(struct au_init *ip)
{
    SET_DEFAULT_ALLOC_OPTS(ip);
    ip->enable			= AU_ALLOC_DEFAULT_ENABLE(1);
    ip->thr_spec		= 1;
    ip->atype			= AFIT;
    ip->init.util.name_prefix	= "temp_";
    ip->init.util.alloc_no	= ERTS_ALC_A_TEMPORARY;
#ifndef SMALL_MEMORY
    ip->init.util.mmbcs 	= 128*1024; /* Main carrier size */
#else
    ip->init.util.mmbcs 	= 32*1024; /* Main carrier size */
#endif
    ip->init.util.ts 		= ERTS_ALC_MTA_TEMPORARY;
    ip->init.util.rsbcst	= 90;
    ip->init.util.rmbcmt	= 100;
#if HALFWORD_HEAP
    ip->init.util.force         = 1;
    ip->init.util.low_mem       = 1;
#endif
}

static void
set_default_eheap_alloc_opts(struct au_init *ip)
{
    SET_DEFAULT_ALLOC_OPTS(ip);
    ip->enable			= AU_ALLOC_DEFAULT_ENABLE(1);
    ip->thr_spec		= 1;
    ip->atype			= GOODFIT;
    ip->init.util.mmmbc		= 100;
    ip->init.util.name_prefix	= "eheap_";
    ip->init.util.alloc_no	= ERTS_ALC_A_EHEAP;
#ifndef SMALL_MEMORY
    ip->init.util.mmbcs 	= 512*1024; /* Main carrier size */
#else
    ip->init.util.mmbcs 	= 256*1024; /* Main carrier size */
#endif
    ip->init.util.ts 		= ERTS_ALC_MTA_EHEAP;
    ip->init.util.rsbcst	= 50;
#if HALFWORD_HEAP
    ip->init.util.force         = 1;
    ip->init.util.low_mem       = 1;
#endif
}

static void
set_default_binary_alloc_opts(struct au_init *ip)
{
    SET_DEFAULT_ALLOC_OPTS(ip);
    ip->enable			= AU_ALLOC_DEFAULT_ENABLE(1);
    ip->thr_spec		= 1;
    ip->atype			= BESTFIT;
    ip->init.util.mmmbc		= 50;
    ip->init.util.name_prefix	= "binary_";
    ip->init.util.alloc_no	= ERTS_ALC_A_BINARY;
#ifndef SMALL_MEMORY
    ip->init.util.mmbcs 	= 128*1024; /* Main carrier size */
#else
    ip->init.util.mmbcs 	= 32*1024; /* Main carrier size */
#endif
    ip->init.util.ts 		= ERTS_ALC_MTA_BINARY;
}

static void
set_default_ets_alloc_opts(struct au_init *ip)
{
    SET_DEFAULT_ALLOC_OPTS(ip);
    ip->enable			= AU_ALLOC_DEFAULT_ENABLE(1);
    ip->thr_spec		= 1;
    ip->atype			= BESTFIT;
    ip->init.util.mmmbc		= 100;
    ip->init.util.name_prefix	= "ets_";
    ip->init.util.alloc_no	= ERTS_ALC_A_ETS;
#ifndef SMALL_MEMORY
    ip->init.util.mmbcs 	= 128*1024; /* Main carrier size */
#else
    ip->init.util.mmbcs 	= 32*1024; /* Main carrier size */
#endif
    ip->init.util.ts 		= ERTS_ALC_MTA_ETS;
}

static void
set_default_driver_alloc_opts(struct au_init *ip)
{
    SET_DEFAULT_ALLOC_OPTS(ip);
    ip->enable			= AU_ALLOC_DEFAULT_ENABLE(1);
    ip->thr_spec		= 1;
    ip->atype			= BESTFIT;
    ip->init.util.name_prefix	= "driver_";
    ip->init.util.alloc_no	= ERTS_ALC_A_DRIVER;
#ifndef SMALL_MEMORY
    ip->init.util.mmbcs 	= 128*1024; /* Main carrier size */
#else
    ip->init.util.mmbcs 	= 32*1024; /* Main carrier size */
#endif
    ip->init.util.ts 		= ERTS_ALC_MTA_DRIVER;
}

#ifdef ERTS_SMP

static void
adjust_tpref(struct au_init *ip, int no_sched)
{
    if (ip->thr_spec) {
	Uint allocs;
	if (ip->thr_spec < 0) {/* User specified amount */
	    allocs = abs(ip->thr_spec);
	    if (allocs > no_sched)
		allocs = no_sched;
	}
	else if (no_sched > ERTS_ALC_DEFAULT_MAX_THR_PREF)
	    allocs = ERTS_ALC_DEFAULT_MAX_THR_PREF;
	else 
	    allocs = no_sched;
	if (allocs <= 1)
	    ip->thr_spec = 0;
	else {
	    ip->thr_spec = (int) allocs;
	    ip->thr_spec *= -1; /* thread preferred */

	    /* If default ... */

	    /* ... shrink main multi-block carrier size */
	    if (ip->default_.mmbcs)
		ip->init.util.mmbcs /= ERTS_MIN(4, allocs);
	    /* ... shrink largest multi-block carrier size */
	    if (ip->default_.lmbcs)
		ip->init.util.lmbcs /= ERTS_MIN(2, allocs);
	    /* ... shrink smallest multi-block carrier size */
	    if (ip->default_.smbcs)
		ip->init.util.smbcs /= ERTS_MIN(4, allocs);
	    /* ... and more than three allocators shrink
	       max mseg multi-block carriers */
	    if (ip->default_.mmmbc && allocs > 2) {
		ip->init.util.mmmbc /= ERTS_MIN(4, allocs - 1);
		if (ip->init.util.mmmbc < 3)
		    ip->init.util.mmmbc = 3;
	    }
	}
    }
}

#endif

static void handle_args(int *, char **, erts_alc_hndl_args_init_t *);

static void
set_au_allocator(ErtsAlcType_t alctr_n, struct au_init *init);

static void
start_au_allocator(ErtsAlcType_t alctr_n,
		   struct au_init *init,
		   ErtsAllocatorState_t *state);

static void
refuse_af_strategy(struct au_init *init)
{
    if (init->atype == AFIT)
	init->atype = GOODFIT;
}

static void init_thr_ix(int static_ixs);

#ifdef HARD_DEBUG
static void hdbg_init(void);
#endif

void
erts_alloc_init(int *argc, char **argv, ErtsAllocInitOpts *eaiop)
{
    UWord extra_block_size = 0;
    int i;
    erts_alc_hndl_args_init_t init = {
	0,
#if HAVE_ERTS_MSEG
	ERTS_MSEG_INIT_DEFAULT_INITIALIZER,
#endif
	ERTS_DEFAULT_TRIM_THRESHOLD,
	ERTS_DEFAULT_TOP_PAD,
	ERTS_DEFAULT_ALCU_INIT
    };

#ifdef HARD_DEBUG
    hdbg_init();
#endif

    erts_have_sbmbc_alloc = 0;

    erts_sys_alloc_init();
    init_thr_ix(erts_no_schedulers);
    erts_init_utils_mem();

    set_default_sbmbc_alloc_opts(&init.sbmbc_alloc);
    set_default_sl_alloc_opts(&init.sl_alloc);
    set_default_std_alloc_opts(&init.std_alloc);
    set_default_ll_alloc_opts(&init.ll_alloc);
    set_default_temp_alloc_opts(&init.temp_alloc);
    set_default_eheap_alloc_opts(&init.eheap_alloc);
    set_default_binary_alloc_opts(&init.binary_alloc);
    set_default_ets_alloc_opts(&init.ets_alloc);
    set_default_driver_alloc_opts(&init.driver_alloc);

    if (argc && argv)
	handle_args(argc, argv, &init);

    if (erts_no_schedulers <= 1) {
	init.sbmbc_alloc.thr_spec = 0;
	init.sl_alloc.thr_spec = 0;
	init.std_alloc.thr_spec = 0;
	init.ll_alloc.thr_spec = 0;
	init.eheap_alloc.thr_spec = 0;
	init.binary_alloc.thr_spec = 0;
	init.ets_alloc.thr_spec = 0;
	init.driver_alloc.thr_spec = 0;
    }

    if (init.erts_alloc_config) {
	/* Adjust flags that erts_alloc_config won't like */
	init.sbmbc_alloc.thr_spec = 0;
	init.temp_alloc.thr_spec = 0;
	init.sl_alloc.thr_spec = 0;
	init.std_alloc.thr_spec = 0;
	init.ll_alloc.thr_spec = 0;
	init.eheap_alloc.thr_spec = 0;
	init.binary_alloc.thr_spec = 0;
	init.ets_alloc.thr_spec = 0;
	init.driver_alloc.thr_spec = 0;
    }

#ifdef ERTS_SMP
    /* Only temp_alloc can use thread specific interface */
    if (init.temp_alloc.thr_spec)
	init.temp_alloc.thr_spec = erts_no_schedulers;

    /* Others must use thread preferred interface */
    adjust_tpref(&init.sbmbc_alloc, erts_no_schedulers);
    adjust_tpref(&init.sl_alloc, erts_no_schedulers);
    adjust_tpref(&init.std_alloc, erts_no_schedulers);
    adjust_tpref(&init.ll_alloc, erts_no_schedulers);
    adjust_tpref(&init.eheap_alloc, erts_no_schedulers);
    adjust_tpref(&init.binary_alloc, erts_no_schedulers);
    adjust_tpref(&init.ets_alloc, erts_no_schedulers);
    adjust_tpref(&init.driver_alloc, erts_no_schedulers);

#else
    /* No thread specific if not smp */
    init.temp_alloc.thr_spec = 0;
#endif

    /*
     * The following allocators cannot be run with afit strategy.
     * Make sure they don't...
     */
    refuse_af_strategy(&init.sbmbc_alloc);
    refuse_af_strategy(&init.sl_alloc);
    refuse_af_strategy(&init.std_alloc);
    refuse_af_strategy(&init.ll_alloc);
    refuse_af_strategy(&init.eheap_alloc);
    refuse_af_strategy(&init.binary_alloc);
    refuse_af_strategy(&init.ets_alloc);
    refuse_af_strategy(&init.driver_alloc);

#ifdef ERTS_SMP 
    if (!init.temp_alloc.thr_spec)
	refuse_af_strategy(&init.temp_alloc);
#endif

    erts_mtrace_pre_init();
#if HAVE_ERTS_MSEG
    erts_mseg_init(&init.mseg);
#endif
    erts_alcu_init(&init.alloc_util);
    erts_afalc_init();
    erts_bfalc_init();
    erts_gfalc_init();
    erts_aoffalc_init();

    for (i = ERTS_ALC_A_MIN; i <= ERTS_ALC_A_MAX; i++) {
	erts_allctrs[i].alloc		= NULL;
	erts_allctrs[i].realloc		= NULL;
	erts_allctrs[i].free		= NULL;
	erts_allctrs[i].extra		= NULL;
	erts_allctrs_info[i].alloc_util	= 0;
	erts_allctrs_info[i].enabled	= 0;
	erts_allctrs_info[i].thr_spec	= 0;
	erts_allctrs_info[i].extra	= NULL;
    }

#ifdef ERTS_ALC_N_MIN_A_FIXED_SIZE
#if !defined(PURIFY) && !defined(VALGRIND)
    erts_allctrs[ERTS_ALC_A_FIXED_SIZE].alloc		= erts_fix_alloc;
    erts_allctrs[ERTS_ALC_A_FIXED_SIZE].realloc		= erts_fix_realloc;
    erts_allctrs[ERTS_ALC_A_FIXED_SIZE].free		= erts_fix_free;
    erts_allctrs_info[ERTS_ALC_A_FIXED_SIZE].enabled	= 1;
#else
    erts_allctrs[ERTS_ALC_A_FIXED_SIZE].alloc		= erts_sys_alloc;
    erts_allctrs[ERTS_ALC_A_FIXED_SIZE].realloc		= erts_sys_realloc;
    erts_allctrs[ERTS_ALC_A_FIXED_SIZE].free		= erts_sys_free;
    erts_allctrs_info[ERTS_ALC_A_FIXED_SIZE].enabled	= 0;
#endif
#endif

    erts_allctrs[ERTS_ALC_A_SYSTEM].alloc		= erts_sys_alloc;
    erts_allctrs[ERTS_ALC_A_SYSTEM].realloc		= erts_sys_realloc;
    erts_allctrs[ERTS_ALC_A_SYSTEM].free		= erts_sys_free;
    erts_allctrs_info[ERTS_ALC_A_SYSTEM].enabled	= 1;

#if HALFWORD_HEAP
    /* Init low memory variants by cloning */
    init.sbmbc_low_alloc = init.sbmbc_alloc;
    init.sbmbc_low_alloc.init.util.name_prefix = "sbmbc_low_";
    init.sbmbc_low_alloc.init.util.alloc_no = ERTS_ALC_A_SBMBC_LOW;
    init.sbmbc_low_alloc.init.util.low_mem = 1;

    init.std_low_alloc = init.std_alloc;
    init.std_low_alloc.init.util.name_prefix	= "std_low_";
    init.std_low_alloc.init.util.alloc_no = ERTS_ALC_A_STANDARD_LOW;
    init.std_low_alloc.init.util.force = 1;
    init.std_low_alloc.init.util.low_mem = 1;

    init.ll_low_alloc = init.ll_alloc;
    init.ll_low_alloc.init.util.name_prefix	= "ll_low_";
    init.ll_low_alloc.init.util.alloc_no = ERTS_ALC_A_LONG_LIVED_LOW;
    init.ll_low_alloc.init.util.force = 1;
    init.ll_low_alloc.init.util.low_mem = 1;

    set_au_allocator(ERTS_ALC_A_SBMBC_LOW, &init.sbmbc_low_alloc);
    set_au_allocator(ERTS_ALC_A_STANDARD_LOW, &init.std_low_alloc);
    set_au_allocator(ERTS_ALC_A_LONG_LIVED_LOW, &init.ll_low_alloc);
#endif /* HALFWORD */

    set_au_allocator(ERTS_ALC_A_TEMPORARY, &init.temp_alloc);
    set_au_allocator(ERTS_ALC_A_SBMBC, &init.sbmbc_alloc);
    set_au_allocator(ERTS_ALC_A_SHORT_LIVED, &init.sl_alloc);
    set_au_allocator(ERTS_ALC_A_STANDARD, &init.std_alloc);
    set_au_allocator(ERTS_ALC_A_LONG_LIVED, &init.ll_alloc);
    set_au_allocator(ERTS_ALC_A_EHEAP, &init.eheap_alloc);
    set_au_allocator(ERTS_ALC_A_BINARY, &init.binary_alloc);
    set_au_allocator(ERTS_ALC_A_ETS, &init.ets_alloc);
    set_au_allocator(ERTS_ALC_A_DRIVER, &init.driver_alloc);

    for (i = ERTS_ALC_A_MIN; i <= ERTS_ALC_A_MAX; i++) {
	if (!erts_allctrs[i].alloc)
	    erl_exit(ERTS_ABORT_EXIT,
		     "Missing alloc function for %s\n", ERTS_ALC_A2AD(i));
	if (!erts_allctrs[i].realloc)
	    erl_exit(ERTS_ABORT_EXIT,
		     "Missing realloc function for %s\n", ERTS_ALC_A2AD(i));
	if (!erts_allctrs[i].free)
	    erl_exit(ERTS_ABORT_EXIT,
		     "Missing free function for %s\n", ERTS_ALC_A2AD(i));
    }

    sys_alloc_opt(SYS_ALLOC_OPT_TRIM_THRESHOLD, init.trim_threshold);
    sys_alloc_opt(SYS_ALLOC_OPT_TOP_PAD, init.top_pad);
    if (erts_allctrs_info[ERTS_FIX_CORE_ALLOCATOR].enabled)
	erts_fix_core_allocator_ix = ERTS_FIX_CORE_ALLOCATOR;
    else
	erts_fix_core_allocator_ix = ERTS_ALC_A_SYSTEM;

    erts_mtrace_init(init.instr.mtrace, init.instr.nodename);

    /* sbmbc_alloc() needs to be started first */
    start_au_allocator(ERTS_ALC_A_SBMBC,
		       &init.sbmbc_alloc,
		       &sbmbc_alloc_state);
#if HALFWORD_HEAP
    start_au_allocator(ERTS_ALC_A_SBMBC_LOW,
		       &init.sbmbc_low_alloc,
		       &sbmbc_low_alloc_state);
    erts_have_sbmbc_alloc = (init.sbmbc_alloc.enable
			     && init.sbmbc_low_alloc.enable);
#else
    erts_have_sbmbc_alloc = init.sbmbc_alloc.enable;
#endif

    start_au_allocator(ERTS_ALC_A_TEMPORARY,
		       &init.temp_alloc,
		       &temp_alloc_state);

    start_au_allocator(ERTS_ALC_A_SHORT_LIVED,
		       &init.sl_alloc,
		       &sl_alloc_state);

    start_au_allocator(ERTS_ALC_A_STANDARD,
		       &init.std_alloc,
		       &std_alloc_state);

    start_au_allocator(ERTS_ALC_A_LONG_LIVED,
		       &init.ll_alloc,
		       &ll_alloc_state);
#if HALFWORD_HEAP
    start_au_allocator(ERTS_ALC_A_LONG_LIVED_LOW,
		       &init.ll_low_alloc,
		       &ll_low_alloc_state);
    start_au_allocator(ERTS_ALC_A_STANDARD_LOW,
		       &init.std_low_alloc,
		       &std_low_alloc_state);
#endif
    start_au_allocator(ERTS_ALC_A_EHEAP,
		       &init.eheap_alloc,
		       &eheap_alloc_state);

    start_au_allocator(ERTS_ALC_A_BINARY,
		       &init.binary_alloc,
		       &binary_alloc_state);

    start_au_allocator(ERTS_ALC_A_ETS,
		       &init.ets_alloc,
		       &ets_alloc_state);

    start_au_allocator(ERTS_ALC_A_DRIVER,
		       &init.driver_alloc,
		       &driver_alloc_state);

    fix_core_allocator	= erts_allctrs[erts_fix_core_allocator_ix].alloc;
    fix_core_extra	= erts_allctrs[erts_fix_core_allocator_ix].extra;

    erts_mtrace_install_wrapper_functions();
    extra_block_size += erts_instr_init(init.instr.stat, init.instr.map);

#ifdef DEBUG
    extra_block_size += install_debug_functions();
#endif

#ifdef ERTS_ALC_N_MIN_A_FIXED_SIZE

    erts_init_fix_alloc(extra_block_size, fix_core_alloc);


#if !defined(PURIFY) && !defined(VALGRIND)
    erts_set_fix_size(ERTS_ALC_T_PROC,		sizeof(Process));
    erts_set_fix_size(ERTS_ALC_T_DB_TABLE,	sizeof(DbTable));
    erts_set_fix_size(ERTS_ALC_T_ATOM,		sizeof(Atom));

    erts_set_fix_size(ERTS_ALC_T_MODULE,	sizeof(Module));
    erts_set_fix_size(ERTS_ALC_T_REG_PROC,	sizeof(RegProc));
    erts_set_fix_size(ERTS_ALC_T_FUN_ENTRY,	sizeof(ErlFunEntry));
#ifdef ERTS_ALC_T_DRV_EV_D_STATE
    erts_set_fix_size(ERTS_ALC_T_DRV_EV_D_STATE,
		      sizeof(ErtsDrvEventDataState));
#endif
#ifdef ERTS_ALC_T_DRV_SEL_D_STATE
    erts_set_fix_size(ERTS_ALC_T_DRV_SEL_D_STATE,
		      sizeof(ErtsDrvSelectDataState));
#endif
#if !HALFWORD_HEAP
    erts_set_fix_size(ERTS_ALC_T_EXPORT,	sizeof(Export));
    erts_set_fix_size(ERTS_ALC_T_MONITOR_SH,	ERTS_MONITOR_SH_SIZE*sizeof(Uint));
    erts_set_fix_size(ERTS_ALC_T_NLINK_SH,	ERTS_LINK_SH_SIZE*sizeof(Uint));
#endif
#endif
#endif

}

static void
set_au_allocator(ErtsAlcType_t alctr_n, struct au_init *init)
{
    ErtsAllocatorFunctions_t *af = &erts_allctrs[alctr_n];
    ErtsAllocatorInfo_t *ai = &erts_allctrs_info[alctr_n];
    ErtsAllocatorThrSpec_t *tspec = &erts_allctr_thr_spec[alctr_n];

    /*
     * Some allocators are forced on if halfword heap is used.
     */
    if (init->init.util.force)
	init->enable = 1;

    if (!init->enable) {
	af->alloc = erts_sys_alloc;
	af->realloc = erts_sys_realloc;
	af->free = erts_sys_free;
	af->extra = NULL;
	ai->alloc_util = 0;
	ai->enabled = 0;
	ai->extra = NULL;
	return;
    }

    tspec->enabled = 0;
    tspec->all_thr_safe = 0;
    ai->thr_spec = 0;
#ifdef USE_THREADS
    if (init->thr_spec) {
	if (init->thr_spec > 0) {
	    af->alloc = erts_alcu_alloc_thr_spec;
	    if (init->init.util.ramv)
		af->realloc = erts_alcu_realloc_mv_thr_spec;
	    else
		af->realloc = erts_alcu_realloc_thr_spec;
	    af->free = erts_alcu_free_thr_spec;
	}
	else {
	    af->alloc = erts_alcu_alloc_thr_pref;
	    if (init->init.util.ramv)
		af->realloc = erts_alcu_realloc_mv_thr_pref;
	    else
		af->realloc = erts_alcu_realloc_thr_pref;
	    af->free = erts_alcu_free_thr_pref;
	    tspec->all_thr_safe = 1;
	}

	tspec->enabled	= 1;
	tspec->size	= abs(init->thr_spec) + 1;

	ai->thr_spec	= tspec->size;
    }
    else if (init->init.util.ts) {
	af->alloc = erts_alcu_alloc_ts;
	if (init->init.util.ramv)
	    af->realloc = erts_alcu_realloc_mv_ts;
	else
	    af->realloc = erts_alcu_realloc_ts;
	af->free = erts_alcu_free_ts;
    }
    else
#endif
    {
	af->alloc = erts_alcu_alloc;
	if (init->init.util.ramv)
	    af->realloc = erts_alcu_realloc_mv;
	else
	    af->realloc = erts_alcu_realloc;
	af->free = erts_alcu_free;
    }
    af->extra	= NULL;
    ai->alloc_util	= 1;
    ai->enabled		= 1;
}

static void
start_au_allocator(ErtsAlcType_t alctr_n,
		   struct au_init *init,
		   ErtsAllocatorState_t *state)
{
    int i;
    int size = 1;
    void *as0;
    enum allctr_type atype;
    ErtsAllocatorFunctions_t *af = &erts_allctrs[alctr_n];
    ErtsAllocatorInfo_t *ai = &erts_allctrs_info[alctr_n];
    ErtsAllocatorThrSpec_t *tspec = &erts_allctr_thr_spec[alctr_n];

    if (!init->enable)
	return;

    if (init->thr_spec) {
	void *states = erts_sys_alloc(0,
				      NULL,
				      ((sizeof(Allctr_t *)
					* (tspec->size + 1))
				       + (sizeof(ErtsAllocatorState_t)
					  * tspec->size)
				       + ERTS_CACHE_LINE_SIZE - 1));
	if (!states)
	    erl_exit(ERTS_ABORT_EXIT,
		     "Failed to allocate allocator states for %salloc\n",
		     init->init.util.name_prefix);
	tspec->allctr = (Allctr_t **) states;
	states = ((char *) states) + sizeof(Allctr_t *) * (tspec->size + 1);
	states = ((((UWord) states) & ERTS_CACHE_LINE_MASK)
		  ? (void *) ((((UWord) states) & ~ERTS_CACHE_LINE_MASK)
			      + ERTS_CACHE_LINE_SIZE)
		  : (void *) states);
	tspec->allctr[0] = init->thr_spec > 0 ? (Allctr_t *) state : (Allctr_t *) NULL;
	size = tspec->size;
	for (i = 1; i < size; i++)
	    tspec->allctr[i] = (Allctr_t *)
		&((ErtsAllocatorState_t *) states)[i-1];
    }

    for (i = 0; i < size; i++) {
	void *as;
	atype = init->atype;

	if (!init->thr_spec)
	    as0 = state;
	else {
	    as0 = (void *) tspec->allctr[i];
	    if (!as0)
		continue;
	    if (i == 0) {
		if (atype == AFIT)
		    atype = GOODFIT;
		init->init.util.ts = 1;
	    }
	    else {
		if (init->thr_spec < 0) {
		    init->init.util.ts = 1;
		    init->init.util.tspec = 0;
		    init->init.util.tpref = -1*init->thr_spec;
		}
		else {
		    init->init.util.ts = 0;
		    init->init.util.tspec = init->thr_spec + 1;
		    init->init.util.tpref = 0;
		}   
	    }
	}

	switch (atype) {
	case GOODFIT:
	    as = (void *) erts_gfalc_start((GFAllctr_t *) as0,
					   &init->init.gf,
					   &init->init.util);
	    break;
	case BESTFIT:
	    as = (void *) erts_bfalc_start((BFAllctr_t *) as0,
					   &init->init.bf,
					   &init->init.util);
	    break;
	case AFIT:
	    as = (void *) erts_afalc_start((AFAllctr_t *) as0,
					   &init->init.af,
					   &init->init.util);
	    break;
    	case AOFIRSTFIT:
	    as = (void *) erts_aoffalc_start((AOFFAllctr_t *) as0,
					     &init->init.aoff,
					     &init->init.util);
	    break;

	default:
	    as = NULL;
	    ASSERT(0);
	}

	if (!as)
	    erl_exit(ERTS_ABORT_EXIT,
		     "Failed to start %salloc\n", init->init.util.name_prefix);

	ASSERT(as == (void *) as0);
	af->extra = as;
    }

    if (init->thr_spec) {
	af->extra = tspec;
	init->init.util.ts = 1;
    }

    ai->extra = af->extra;
}


static void bad_param(char *param_start, char *param_end)
{
    size_t len = param_end - param_start;
    char param[100];
    if (len > 99)
	len = 99;
    sys_memcpy((void *) param, (void *) param_start, len);
    param[len] = '\0';
    erts_fprintf(stderr, "bad \"%s\" parameter\n", param);
    erts_usage();
}

static void bad_value(char *param_start, char *param_end, char *value)
{
    size_t len = param_end - param_start;
    char param[100];
    if (len > 99)
	len = 99;
    sys_memcpy((void *) param, (void *) param_start, len);
    param[len] = '\0';
    erts_fprintf(stderr, "bad \"%s\" value: %s\n", param, value);
    erts_usage();
}

/* Get arg marks argument as handled by
   putting NULL in argv */
static char *
get_value(char* rest, char** argv, int* ip)
{
    char *param = argv[*ip]+1;
    argv[*ip] = NULL;
    if (*rest == '\0') {
	char *next = argv[*ip + 1];
	if (next[0] == '-'
	    && next[1] == '-'
	    &&  next[2] == '\0') {
	    bad_value(param, rest, "");
	}
	(*ip)++;
	argv[*ip] = NULL;
	return next;
    }
    return rest;
}

static ERTS_INLINE int
has_prefix(const char *prefix, const char *string)
{
    int i;
    for (i = 0; prefix[i]; i++)
	if (prefix[i] != string[i])
	    return 0;
    return 1;
}

static int
get_bool_value(char *param_end, char** argv, int* ip)
{
    char *param = argv[*ip]+1;
    char *value = get_value(param_end, argv, ip);
    if (strcmp(value, "true") == 0)
	return 1;
    else if (strcmp(value, "false") == 0)
	return 0;
    else
	bad_value(param, param_end, value);
    return -1;
}

static Uint
get_kb_value(char *param_end, char** argv, int* ip)
{
    Sint tmp;
    Uint max = ((~((Uint) 0))/1024) + 1;
    char *rest;
    char *param = argv[*ip]+1;
    char *value = get_value(param_end, argv, ip);
    errno = 0;
    tmp = (Sint) strtol(value, &rest, 10);
    if (errno != 0 || rest == value || tmp < 0 || max < ((Uint) tmp))
	bad_value(param, param_end, value);
    if (max == (Uint) tmp)
	return ~((Uint) 0);
    else
	return ((Uint) tmp)*1024;
}

static Uint
get_byte_value(char *param_end, char** argv, int* ip)
{
    Sint tmp;
    char *rest;
    char *param = argv[*ip]+1;
    char *value = get_value(param_end, argv, ip);
    errno = 0;
    tmp = (Sint) strtol(value, &rest, 10);
    if (errno != 0 || rest == value || tmp < 0)
	bad_value(param, param_end, value);
    return (Uint) tmp;
}

static Uint
get_amount_value(char *param_end, char** argv, int* ip)
{
    Sint tmp;
    char *rest;
    char *param = argv[*ip]+1;
    char *value = get_value(param_end, argv, ip);
    errno = 0;
    tmp = (Sint) strtol(value, &rest, 10);
    if (errno != 0 || rest == value || tmp < 0)
	bad_value(param, param_end, value);
    return (Uint) tmp;
}

static int
get_bool_or_possitive_amount_value(int *bool, Uint *amount,
				   char *param_end, char** argv, int* ip)
{
    char *param = argv[*ip]+1;
    char *value = get_value(param_end, argv, ip);
    if (strcmp(value, "true") == 0) {
	*bool = 1; 
	return 1;
    }
    else if (strcmp(value, "false") == 0) {
	*bool = 0; 
	return 1;
    }
    else {
	Sint tmp;
	char *rest;
	errno = 0;
	tmp = (Sint) strtol(value, &rest, 10);
	if (errno != 0 || rest == value || tmp <= 0) {
	    bad_value(param, param_end, value);
	    return -1;
	}
	*amount = (Uint) tmp;
	return 0;
    }
}

static void
handle_au_arg(struct au_init *auip,
	      char* sub_param,
	      char** argv,
	      int* ip)
{
    char *param = argv[*ip]+1;

    switch (sub_param[0]) {
    case 'a':
	if(has_prefix("asbcst", sub_param)) {
	    auip->init.util.asbcst = get_kb_value(sub_param + 6, argv, ip);
	}
	else if(has_prefix("as", sub_param)) {
	    char *alg = get_value(sub_param + 2, argv, ip);
	    if (strcmp("bf", alg) == 0) {
		auip->atype = BESTFIT;
		auip->init.bf.ao = 0;
	    }
	    else if (strcmp("aobf", alg) == 0) {
		auip->atype = BESTFIT;
		auip->init.bf.ao = 1;
	    }
	    else if (strcmp("gf", alg) == 0) {
		auip->atype = GOODFIT;
	    }
	    else if (strcmp("af", alg) == 0) {
		auip->atype = AFIT;
	    }
	    else if (strcmp("aoff", alg) == 0) {
		auip->atype = AOFIRSTFIT;
	    }
	    else {
		bad_value(param, sub_param + 1, alg);
	    }
	}
	else
	    goto bad_switch;
	break;
    case 'e':
	auip->enable = get_bool_value(sub_param+1, argv, ip);
	break;
    case 'l':
	if (has_prefix("lmbcs", sub_param)) {
	    auip->default_.lmbcs = 0;
	    auip->init.util.lmbcs = get_kb_value(sub_param + 5, argv, ip);
	}
	else
	    goto bad_switch;
	break;
    case 'm':
	if (has_prefix("mbcgs", sub_param)) {
	    auip->init.util.mbcgs = get_amount_value(sub_param + 5, argv, ip);

	}
	else if (has_prefix("mbsd", sub_param)) {
	    auip->init.gf.mbsd = get_amount_value(sub_param + 4, argv, ip);
	    if (auip->init.gf.mbsd < 1)
		auip->init.gf.mbsd = 1;
	}
	else if (has_prefix("mmbcs", sub_param)) {
	    auip->default_.mmbcs = 0;
	    auip->init.util.mmbcs = get_kb_value(sub_param + 5, argv, ip);
	}
	else if (has_prefix("mmmbc", sub_param)) {
	    auip->default_.mmmbc = 0;
	    auip->init.util.mmmbc = get_amount_value(sub_param + 5, argv, ip);
	}
	else if (has_prefix("mmsbc", sub_param)) {
	    auip->init.util.mmsbc = get_amount_value(sub_param + 5, argv, ip);
	}
	else
	    goto bad_switch;
	break;
    case 'r':
	if(has_prefix("rsbcmt", sub_param)) {
	    auip->init.util.rsbcmt = get_amount_value(sub_param + 6, argv, ip);
	    if (auip->init.util.rsbcmt > 100)
		auip->init.util.rsbcmt = 100;
	}
	else if(has_prefix("rsbcst", sub_param)) {
	    auip->init.util.rsbcst = get_amount_value(sub_param + 6, argv, ip);
	    if (auip->init.util.rsbcst > 100)
		auip->init.util.rsbcst = 100;
	}
	else if (has_prefix("rmbcmt", sub_param)) {
	    auip->init.util.rmbcmt = get_amount_value(sub_param + 6, argv, ip);
	    if (auip->init.util.rmbcmt > 100)
		auip->init.util.rmbcmt = 100;
	}
	else if (has_prefix("ramv", sub_param)) {
	    auip->init.util.ramv = get_bool_value(sub_param + 4, argv, ip);
	}
	else
	    goto bad_switch;
	break;
    case 's':
	if(has_prefix("sbct", sub_param)) {
	    auip->init.util.sbct = get_kb_value(sub_param + 4, argv, ip);
	}
	else if (has_prefix("sbmbcs", sub_param)) {
	    auip->init.util.sbmbcs = get_byte_value(sub_param + 6, argv, ip);
	}
	else if (has_prefix("sbmbct", sub_param)) {
	    auip->init.util.sbmbct = get_byte_value(sub_param + 6, argv, ip);
	}
	else if (has_prefix("smbcs", sub_param)) {
	    auip->default_.smbcs = 0;
	    auip->init.util.smbcs = get_kb_value(sub_param + 5, argv, ip);
	}
	else
	    goto bad_switch;
	break;
    case 't': {
	Uint no;
	int enable;
	int res = get_bool_or_possitive_amount_value(&enable,
						     &no,
						     sub_param+1,
						     argv,
						     ip);
	if (res > 0)
	    auip->thr_spec = enable ? 1 : 0;
	else if (res == 0) {
	    int allocs = (int) no;
	    if (allocs < 0)
		allocs = INT_MIN;
	    else {
		allocs *= -1;
	    }
	    auip->thr_spec = allocs;
	}
	break;
    }
    default:
    bad_switch:
	bad_param(param, sub_param);
    }
}

static void
handle_args(int *argc, char **argv, erts_alc_hndl_args_init_t *init)
{
    struct au_init *aui[] = {
	&init->sbmbc_alloc,
	&init->binary_alloc,
	&init->std_alloc,
	&init->ets_alloc,
	&init->eheap_alloc,
	&init->ll_alloc,
	&init->driver_alloc,
	&init->sl_alloc,
	&init->temp_alloc
    };
    int aui_sz = (int) sizeof(aui)/sizeof(aui[0]);
    char *arg;
    char *rest;
    int i, j;

    i = 1;

    ASSERT(argc && argv && init);

    while (i < *argc) {
	if(argv[i][0] == '-') {
	    char *param = argv[i]+1;
	    switch (argv[i][1]) {
	    case 'M':
		switch (argv[i][2]) {
		case 'B':
		    handle_au_arg(&init->binary_alloc, &argv[i][3], argv, &i);
		    break;
		case 'C':
		    handle_au_arg(&init->sbmbc_alloc, &argv[i][3], argv, &i);
		    break;
		case 'D':
		    handle_au_arg(&init->std_alloc, &argv[i][3], argv, &i);
		    break;
		case 'E':
		    handle_au_arg(&init->ets_alloc, &argv[i][3], argv, &i);
		    break;
		case 'F': /* fix_alloc */
		    if (has_prefix("e", param+2)) {
			arg = get_value(param+3, argv, &i);
			if (strcmp("true", arg) != 0)
			    bad_value(param, param+3, arg);
		    }
		    else
			bad_param(param, param+2);
		    break;
		case 'H':
		    handle_au_arg(&init->eheap_alloc, &argv[i][3], argv, &i);
		    break;
		case 'L':
		    handle_au_arg(&init->ll_alloc, &argv[i][3], argv, &i);
		    break;
		case 'M':
		    if (has_prefix("amcbf", argv[i]+3)) {
#if HAVE_ERTS_MSEG
			init->mseg.amcbf =
#endif
			    get_kb_value(argv[i]+8, argv, &i);
		    }
		    else if (has_prefix("rmcbf", argv[i]+3)) {
#if HAVE_ERTS_MSEG
			init->mseg.rmcbf =
#endif
			    get_amount_value(argv[i]+8, argv, &i);
		    }
		    else if (has_prefix("mcs", argv[i]+3)) {
#if HAVE_ERTS_MSEG
			init->mseg.mcs =
#endif
			    get_amount_value(argv[i]+6, argv, &i);
		    }
		    else if (has_prefix("cci", argv[i]+3)) {
#if HAVE_ERTS_MSEG
			init->mseg.cci =
#endif
			    get_amount_value(argv[i]+6, argv, &i);
		    }
		    else {
			bad_param(param, param+2);
		    }
		    break;
		case 'R':
		    handle_au_arg(&init->driver_alloc, &argv[i][3], argv, &i);
		    break;
		case 'S':
		    handle_au_arg(&init->sl_alloc, &argv[i][3], argv, &i);
		    break;
		case 'T':
		    handle_au_arg(&init->temp_alloc, &argv[i][3], argv, &i);
		    break;
		case 'Y': { /* sys_alloc */
		    if (has_prefix("tt", param+2)) {
			/* set trim threshold */
			arg = get_value(param+4, argv, &i);
			errno = 0;
			init->trim_threshold = (int) strtol(arg, &rest, 10);
			if (errno != 0
			    || rest == arg
			    || init->trim_threshold < 0
			    || (INT_MAX/1024) < init->trim_threshold) {
			    bad_value(param, param+4, arg);
			}
			VERBOSE(DEBUG_SYSTEM,
                                ("using trim threshold: %d\n",
                                 init->trim_threshold));
			init->trim_threshold *= 1024;
		    }
		    else if (has_prefix("tp", param+2)) {
			/* set top pad */
			arg = get_value(param+4, argv, &i);
			errno = 0;
			init->top_pad = (int) strtol(arg, &rest, 10);
			if (errno != 0
			    || rest == arg
			    || init->top_pad < 0
			    || (INT_MAX/1024) < init->top_pad) {
			    bad_value(param, param+4, arg);
			}
			VERBOSE(DEBUG_SYSTEM,
                                ("using top pad: %d\n",init->top_pad));
			init->top_pad *= 1024;
		    }
		    else if (has_prefix("m", param+2)) {
			/* Has been handled by erlexec */
			(void) get_value(param+3, argv, &i);
		    }
		    else if (has_prefix("e", param+2)) {
			arg = get_value(param+3, argv, &i);
			if (strcmp("true", arg) != 0)
			    bad_value(param, param+3, arg);
		    }
		    else
			bad_param(param, param+2);
		    break;
		}
		case 'e':
		    switch (argv[i][3]) {
		    case 'a': {
			int a;
			arg = get_value(argv[i]+4, argv, &i);
			if (strcmp("min", arg) == 0) {
			    for (a = 0; a < aui_sz; a++)
				aui[a]->enable = 0;
			}
			else if (strcmp("max", arg) == 0) {
			    for (a = 0; a < aui_sz; a++)
				aui[a]->enable = 1;
			}
			else if (strcmp("config", arg) == 0) {
			    init->erts_alloc_config = 1;
			}
			else if (strcmp("r9c", arg) == 0
				 || strcmp("r10b", arg) == 0
				 || strcmp("r11b", arg) == 0) {
			    set_default_sl_alloc_opts(&init->sl_alloc);
			    set_default_std_alloc_opts(&init->std_alloc);
			    set_default_ll_alloc_opts(&init->ll_alloc);
			    set_default_temp_alloc_opts(&init->temp_alloc);
			    set_default_eheap_alloc_opts(&init->eheap_alloc);
			    set_default_binary_alloc_opts(&init->binary_alloc);
			    set_default_ets_alloc_opts(&init->ets_alloc);
			    set_default_driver_alloc_opts(&init->driver_alloc);

			    init->driver_alloc.enable = 0;
			    if (strcmp("r9c", arg) == 0) {
				init->sl_alloc.enable = 0;
				init->std_alloc.enable = 0;
				init->binary_alloc.enable = 0;
				init->ets_alloc.enable = 0;
			    }

			    for (a = 0; a < aui_sz; a++) {
				aui[a]->thr_spec = 0;
				aui[a]->init.util.ramv = 0;
				aui[a]->init.util.mmmbc = 10;
				aui[a]->init.util.lmbcs = 5*1024*1024;
			    }
			}
			else {
			    bad_param(param, param+3);
			}
			break;
		    }
		    default:
			bad_param(param, param+1);
		    }
		    break;
		case 'i':
		    switch (argv[i][3]) {
		    case 's':
			arg = get_value(argv[i]+4, argv, &i);
			if (strcmp("true", arg) == 0)
			    init->instr.stat = 1;
			else if (strcmp("false", arg) == 0)
			    init->instr.stat = 0;
			else
			    bad_value(param, param+3, arg);
			break;
		    case 'm':
			arg = get_value(argv[i]+4, argv, &i);
			if (strcmp("true", arg) == 0)
			    init->instr.map = 1;
			else if (strcmp("false", arg) == 0)
			    init->instr.map = 0;
			else
			    bad_value(param, param+3, arg);
			break;
		    case 't':
			init->instr.mtrace = get_value(argv[i]+4, argv, &i);
			break;
		    default:
			bad_param(param, param+2);
		    }
		    break;
		case 'u':
		    if (has_prefix("ycs", argv[i]+3)) {
			init->alloc_util.ycs
			    = get_kb_value(argv[i]+6, argv, &i);
		    }
		    else if (has_prefix("mmc", argv[i]+3)) {
			init->alloc_util.mmc
			    = get_amount_value(argv[i]+6, argv, &i);
		    }
		    else {
			int a;
			int start = i;
			char *param = argv[i];
			char *val = i+1 < *argc ? argv[i+1] : NULL;

			for (a = 0; a < aui_sz; a++) {
			    if (a > 0) {
				ASSERT(i == start || i == start+1);
				argv[start] = param;
				if (i != start)
				    argv[start + 1] = val;
				i = start;
			    }
			    handle_au_arg(aui[a], &argv[i][3], argv, &i);
			}
		    }
		    break;
		default:
		    bad_param(param, param+1);
		}
		break;
	    case '-':
		if (argv[i][2] == '\0') {
		    /* End of system flags reached */
		    if (init->instr.mtrace
			/* || init->instr.stat
			   || init->instr.map */) {
			while (i < *argc) {
			    if(strcmp(argv[i], "-sname") == 0
			       || strcmp(argv[i], "-name") == 0) {
				if (i + 1 <*argc) {
				    init->instr.nodename = argv[i+1];
				    break;
				}
			    }
			    i++;
			}
		    }
		    goto args_parsed;
		}
		break;
	    default:
		break;
	    }
	}
	i++;
    }

 args_parsed:
    /* Handled arguments have been marked with NULL. Slide arguments
       not handled towards the beginning of argv. */
    for (i = 0, j = 0; i < *argc; i++) {
	if (argv[i])
	    argv[j++] = argv[i];
    }
    *argc = j;
}

static char *type_no_str(ErtsAlcType_t n)
{

#if ERTS_ALC_N_MIN != 0
    if (n < ERTS_ALC_N_MIN)
	return NULL;
#endif
    if (n > ERTS_ALC_N_MAX)
	return NULL;
    return (char *) ERTS_ALC_N2TD(n);
}

#define type_str(T) type_no_str(ERTS_ALC_T2N((T)))

erts_tsd_key_t thr_ix_key;
erts_spinlock_t alloc_thr_ix_lock;
int last_thr_ix;
int first_dyn_thr_ix;

static void
init_thr_ix(int static_ixs)
{
    erts_tsd_key_create(&thr_ix_key);
    erts_spinlock_init(&alloc_thr_ix_lock, "alloc_thr_ix_lock");
    last_thr_ix = -4711;
    first_dyn_thr_ix = static_ixs+1;
}

int
erts_alc_get_thr_ix(void)
{
    int ix = (int)(long) erts_tsd_get(thr_ix_key);
    if (ix == 0) {
	erts_spin_lock(&alloc_thr_ix_lock);
	last_thr_ix++;
	if (last_thr_ix < 0) 
	    last_thr_ix = first_dyn_thr_ix;
	ix = last_thr_ix;
	erts_spin_unlock(&alloc_thr_ix_lock);
	erts_tsd_set(thr_ix_key, (void *)(long) ix);
    }
    ASSERT(ix > 0);
    return ix;
}

void erts_alloc_reg_scheduler_id(Uint id)
{
    int ix = (int) id;
    ASSERT(0 < ix && ix <= first_dyn_thr_ix);
    ASSERT(0 == (int) (long) erts_tsd_get(thr_ix_key));
    erts_tsd_set(thr_ix_key, (void *)(long) ix);
}

static void
no_verify(Allctr_t *allctr)
{

}

erts_alloc_verify_func_t
erts_alloc_get_verify_unused_temp_alloc(Allctr_t **allctr)
{
    if (erts_allctrs_info[ERTS_ALC_A_TEMPORARY].alloc_util
	&& erts_allctrs_info[ERTS_ALC_A_TEMPORARY].thr_spec) {
	ErtsAllocatorThrSpec_t *tspec;
	tspec = &erts_allctr_thr_spec[ERTS_ALC_A_TEMPORARY];
	if (!tspec->all_thr_safe) {
	    int ix = erts_alc_get_thr_ix();

	    if (ix < tspec->size) {
		*allctr = tspec->allctr[ix];
		return erts_alcu_verify_unused;
	    }
	}
    }

    *allctr = NULL;
    return no_verify;
}

__decl_noreturn void
erts_alc_fatal_error(int error, int func, ErtsAlcType_t n, ...)
{
    char buf[10];
    char *t_str;
    char *allctr_str;

    ASSERT(n >= ERTS_ALC_N_MIN);
    ASSERT(n <= ERTS_ALC_N_MAX);


    if (n < ERTS_ALC_N_MIN || ERTS_ALC_N_MAX < n)
	allctr_str = "UNKNOWN";
    else {
	ErtsAlcType_t a = ERTS_ALC_T2A(ERTS_ALC_N2T(n));
	if (erts_allctrs_info[a].enabled)
	    allctr_str = (char *) ERTS_ALC_A2AD(a);
	else
	    allctr_str = (char *) ERTS_ALC_A2AD(ERTS_ALC_A_SYSTEM);
    }

    t_str = type_no_str(n);
    if (!t_str) {
	sprintf(buf, "%d", (int) n);
	t_str = buf;
    }

    switch (error) {
    case ERTS_ALC_E_NOTSUP: {
	char *op_str;
	switch (func) {
	case ERTS_ALC_O_ALLOC:		op_str = "alloc";	break;
	case ERTS_ALC_O_REALLOC:	op_str = "realloc";	break;
	case ERTS_ALC_O_FREE:		op_str = "free";	break;
	default:			op_str = "UNKNOWN";	break;
	}
	erl_exit(ERTS_ABORT_EXIT,
		 "%s: %s operation not supported (memory type: \"%s\")\n",
		 allctr_str, op_str, t_str);
	break;
    }
    case ERTS_ALC_E_NOMEM: {
	Uint size;
	va_list argp;
	char *op = func == ERTS_ALC_O_REALLOC ? "reallocate" : "allocate";
	

	va_start(argp, n);
	size = va_arg(argp, Uint);
	va_end(argp);
	erl_exit(1,
		 "%s: Cannot %s %lu bytes of memory (of type \"%s\").\n",
		 allctr_str, op, size, t_str);
	break;
    }
    case ERTS_ALC_E_NOALLCTR:
	erl_exit(ERTS_ABORT_EXIT,
		 "erts_alloc: Unknown allocator type: %d\n",
		 ERTS_ALC_T2A(ERTS_ALC_N2T(n)));
	break;
    default:
	erl_exit(ERTS_ABORT_EXIT, "erts_alloc: Unknown error: %d\n", error);
	break;
    }
}

__decl_noreturn void
erts_alloc_enomem(ErtsAlcType_t type, Uint size)
{
    erts_alloc_n_enomem(ERTS_ALC_T2N(type), size);
}

__decl_noreturn void
erts_alloc_n_enomem(ErtsAlcType_t n, Uint size)
{
    erts_alc_fatal_error(ERTS_ALC_E_NOMEM, ERTS_ALC_O_ALLOC, n, size);
}

__decl_noreturn void
erts_realloc_enomem(ErtsAlcType_t type, void *ptr, Uint size)
{
    erts_realloc_n_enomem(ERTS_ALC_T2N(type), ptr, size);
}

__decl_noreturn void
erts_realloc_n_enomem(ErtsAlcType_t n, void *ptr, Uint size)
{
    erts_alc_fatal_error(ERTS_ALC_E_NOMEM, ERTS_ALC_O_REALLOC, n, size);
}

static ERTS_INLINE UWord
alcu_size(ErtsAlcType_t ai)
{
    UWord res = 0;

    ASSERT(erts_allctrs_info[ai].enabled);
    ASSERT(erts_allctrs_info[ai].alloc_util);

    if (!erts_allctrs_info[ai].thr_spec) {
	Allctr_t *allctr = erts_allctrs_info[ai].extra;
	AllctrSize_t asize;
	erts_alcu_current_size(allctr, &asize);
	res += asize.blocks;
    }
    else {
	ErtsAllocatorThrSpec_t *tspec = &erts_allctr_thr_spec[ai];
	int i;

	ASSERT(tspec->all_thr_safe);

	ASSERT(tspec->enabled);

	for (i = tspec->size - 1; i >= 0; i--) {
	    Allctr_t *allctr = tspec->allctr[i];
	    AllctrSize_t asize;
	    if (allctr) {
		erts_alcu_current_size(allctr, &asize);
		res += asize.blocks;
	    }
	}
    }

    return res;
}

#if HALFWORD_HEAP
static ERTS_INLINE int
alcu_is_low(ErtsAlcType_t ai)
{
    int is_low = 0;
    ASSERT(erts_allctrs_info[ai].enabled);
    ASSERT(erts_allctrs_info[ai].alloc_util);

    if (!erts_allctrs_info[ai].thr_spec) {
	Allctr_t *allctr = erts_allctrs_info[ai].extra;
	is_low = allctr->mseg_opt.low_mem;
    }
    else {
	ErtsAllocatorThrSpec_t *tspec = &erts_allctr_thr_spec[ai];
	int i;
# ifdef DEBUG
	int found_one = 0;
# endif

	ASSERT(tspec->all_thr_safe);
	ASSERT(tspec->enabled);

	for (i = tspec->size - 1; i >= 0; i--) {
	    Allctr_t *allctr = tspec->allctr[i];
	    if (allctr) {
# ifdef DEBUG
		if (!found_one) {
		    is_low = allctr->mseg_opt.low_mem;
		    found_one = 1;
		}
		else ASSERT(is_low == allctr->mseg_opt.low_mem);
# else
		is_low = allctr->mseg_opt.low_mem;
		break;
# endif
	    }
	}
	ASSERT(found_one);
    }
    return is_low;
}
#endif /* HALFWORD */

Eterm
erts_memory(int *print_to_p, void *print_to_arg, void *proc, Eterm earg)
{
#define ERTS_MEM_NEED_ALL_ALCU (!erts_instr_stat && want_tot_or_sys)
    ErtsFixInfo efi;
    struct {
	int total;
	int processes;
	int processes_used;
	int system;
	int atom;
	int atom_used;
	int binary;
	int code;
	int ets;
	int maximum;
#if HALFWORD_HEAP
	int low;
#endif
    } want = {0};
    struct {
	UWord total;
	UWord processes;
	UWord processes_used;
	UWord system;
	UWord atom;
	UWord atom_used;
	UWord binary;
	UWord code;
	UWord ets;
	UWord maximum;
#if HALFWORD_HEAP
	UWord low;
#endif
    } size = {0};
    Eterm atoms[sizeof(size)/sizeof(UWord)];
    UWord *uintps[sizeof(size)/sizeof(UWord)];
    Eterm euints[sizeof(size)/sizeof(UWord)];
    int want_tot_or_sys;
    int length;
    Eterm res = THE_NON_VALUE;
    ErtsAlcType_t ai;
    int only_one_value = 0;

    /* Figure out whats wanted... */

    length = 0;
    if (is_non_value(earg)) { /* i.e. wants all */
	want.total = 1;
	atoms[length] = am_total;
	uintps[length++] = &size.total;

	want.processes = 1;
	atoms[length] = am_processes;
	uintps[length++] = &size.processes;

	want.processes_used = 1;
	atoms[length] = am_processes_used;
	uintps[length++] = &size.processes_used;

	want.system = 1;
	atoms[length] = am_system;
	uintps[length++] = &size.system;

	want.atom = 1;
	atoms[length] = am_atom;
	uintps[length++] = &size.atom;

	want.atom_used = 1;
	atoms[length] = am_atom_used;
	uintps[length++] = &size.atom_used;

	want.binary = 1;
	atoms[length] = am_binary;
	uintps[length++] = &size.binary;

	want.code = 1;
	atoms[length] = am_code;
	uintps[length++] = &size.code;

	want.ets = 1;
	atoms[length] = am_ets;
	uintps[length++] = &size.ets;

	want.maximum = erts_instr_stat;
	if (want.maximum) {
	    atoms[length] = am_maximum;
	    uintps[length++] = &size.maximum;
	}
#if HALFWORD_HEAP
	want.low = 1;
	atoms[length] = am_low;
	uintps[length++] = &size.low;
#endif
    }
    else {
	DeclareTmpHeapNoproc(tmp_heap,2);
	Eterm wanted_list;

	if (is_nil(earg))
	    return NIL;

	UseTmpHeapNoproc(2);
	if (is_not_atom(earg))
	    wanted_list = earg;
	else {
	    wanted_list = CONS(&tmp_heap[0], earg, NIL);
	    only_one_value = 1;
	}
	    
	while (is_list(wanted_list)) {
	    switch (CAR(list_val(wanted_list))) {
	    case am_total:
		if (!want.total) {
		    want.total = 1;
		    atoms[length] = am_total;
		    uintps[length++] = &size.total;
		}
		break;
	    case am_processes:
		if (!want.processes) {
		    want.processes = 1;
		    atoms[length] = am_processes;
		    uintps[length++] = &size.processes;
		}
		break;
	    case am_processes_used:
		if (!want.processes_used) {
		    want.processes_used = 1;
		    atoms[length] = am_processes_used;
		    uintps[length++] = &size.processes_used;
		}
		break;
	    case am_system:
		if (!want.system) {
		    want.system = 1;
		    atoms[length] = am_system;
		    uintps[length++] = &size.system;
		}
		break;
	    case am_atom:
		if (!want.atom) {
		    want.atom = 1;
		    atoms[length] = am_atom;
		    uintps[length++] = &size.atom;
		}
		break;
	    case am_atom_used:
		if (!want.atom_used) {
		    want.atom_used = 1;
		    atoms[length] = am_atom_used;
		    uintps[length++] = &size.atom_used;
		}
		break;
	    case am_binary:
		if (!want.binary) {
		    want.binary = 1;
		    atoms[length] = am_binary;
		    uintps[length++] = &size.binary;
		}
		break;
	    case am_code:
		if (!want.code) {
		    want.code = 1;
		    atoms[length] = am_code;
		    uintps[length++] = &size.code;
		}
		break;
	    case am_ets:
		if (!want.ets) {
		    want.ets = 1;
		    atoms[length] = am_ets;
		    uintps[length++] = &size.ets;
		}
		break;
	    case am_maximum:
		if (erts_instr_stat) {
		    if (!want.maximum) {
			want.maximum = 1;
			atoms[length] =…