示例#1
0
static void set_main_stack_size(void)
{
    if (erts_sched_thread_suggested_stack_size > 0) {
# if HAVE_DECL_GETRLIMIT && HAVE_DECL_SETRLIMIT && HAVE_DECL_RLIMIT_STACK
	struct rlimit rl;
	int bytes = erts_sched_thread_suggested_stack_size * sizeof(Uint) * 1024;
	if (getrlimit(RLIMIT_STACK, &rl) != 0 ||
	    (rl.rlim_cur = bytes, setrlimit(RLIMIT_STACK, &rl) != 0)) {
	    erts_fprintf(stderr, "failed to set stack size for scheduler "
				 "thread to %d bytes\n", bytes);
	    erts_usage();
	}	    
# else
	erts_fprintf(stderr, "no OS support for dynamic stack size limit\n");
	erts_usage();    
# endif
    }
}
示例#2
0
static char *
get_arg(char* rest, char* next, int* ip)
{
    if (*rest == '\0') {
	if (next == NULL) {
	    erts_fprintf(stderr, "too few arguments\n");
	    erts_usage();
	}
	(*ip)++;
	return next;
    }
    return rest;
}
示例#3
0
文件: sys.c 项目: weisslj/otp
/* 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') {
	    erts_fprintf(stderr, "bad \"%s\" value: \n", param);
	    erts_usage();
	}
	(*ip)++;
	argv[*ip] = NULL;
	return next;
    }
    return rest;
}
示例#4
0
void
erl_start(int argc, char **argv)
{
    int i = 1;
    char* arg=NULL;
    char* Parg = NULL;
    int have_break_handler = 1;
    char envbuf[21]; /* enough for any 64-bit integer */
    size_t envbufsz;
    int ncpu = early_init(&argc, argv);

    envbufsz = sizeof(envbuf);
    if (erts_sys_getenv(ERL_MAX_ETS_TABLES_ENV, envbuf, &envbufsz) == 0)
	user_requested_db_max_tabs = atoi(envbuf);
    else
	user_requested_db_max_tabs = 0;

    envbufsz = sizeof(envbuf);
    if (erts_sys_getenv("ERL_FULLSWEEP_AFTER", envbuf, &envbufsz) == 0) {
	Uint16 max_gen_gcs = atoi(envbuf);
	erts_smp_atomic32_set_nob(&erts_max_gen_gcs,
				  (erts_aint32_t) max_gen_gcs);
    }

#if (defined(__APPLE__) && defined(__MACH__)) || defined(__DARWIN__)
    /*
     * The default stack size on MacOS X is too small for pcre.
     */
    erts_sched_thread_suggested_stack_size = 256;
#endif

#ifdef DEBUG
    verbose = DEBUG_DEFAULT;
#endif

    erts_error_logger_warnings = am_error;

    while (i < argc) {
	if (argv[i][0] != '-') {
	    erts_usage();
	}
	if (strcmp(argv[i], "--") == 0) { /* end of emulator options */
	    i++;
	    break;
	}
	switch (argv[i][1]) {

	    /*
	     * NOTE: -M flags are handled (and removed from argv) by
	     * erts_alloc_init(). 
	     *
	     * The -d, -m, -S, -t, and -T flags was removed in
	     * Erlang 5.3/OTP R9C.
	     *
	     * -S, and -T has been reused in Erlang 5.5/OTP R11B.
	     *
	     * -d has been reused in a patch R12B-4.
	     */

	case '#' :
	    arg = get_arg(argv[i]+2, argv[i+1], &i);
	    if ((display_items = atoi(arg)) == 0) {
		erts_fprintf(stderr, "bad display items%s\n", arg);
		erts_usage();
	    }
	    VERBOSE(DEBUG_SYSTEM,
                    ("using display items %d\n",display_items));
	    break;
	case 'f':
	    if (!strncmp(argv[i],"-fn",3)) {
		arg = get_arg(argv[i]+3, argv[i+1], &i);
		switch (*arg) {
		case 'u':
		    erts_set_user_requested_filename_encoding(ERL_FILENAME_UTF8);
		    break;
		case 'l':
		    erts_set_user_requested_filename_encoding(ERL_FILENAME_LATIN1);
		    break;
		case 'a':
		    erts_set_user_requested_filename_encoding(ERL_FILENAME_UNKNOWN);
		default:
		    erts_fprintf(stderr, "bad filename encoding %s, can be (l,u or a)\n", arg);
		    erts_usage();
		}
		break;
	    } else {
		erts_fprintf(stderr, "%s unknown flag %s\n", argv[0], argv[i]);
		erts_usage();
	    }
	case 'L':
	    erts_no_line_info = 1;
	    break;
	case 'v':
#ifdef DEBUG
	    if (argv[i][2] == '\0') {
		verbose |= DEBUG_SYSTEM;
	    } else {
		char *ch;
		for (ch = argv[i]+2; *ch != '\0'; ch++) {
		    switch (*ch) {
		    case 's': verbose |= DEBUG_SYSTEM; break;
		    case 'g': verbose |= DEBUG_PRIVATE_GC; break;
		    case 'M': verbose |= DEBUG_MEMORY; break;
		    case 'a': verbose |= DEBUG_ALLOCATION; break;
		    case 't': verbose |= DEBUG_THREADS; break;
		    case 'p': verbose |= DEBUG_PROCESSES; break;
		    case 'm': verbose |= DEBUG_MESSAGES; break;
		    default : erts_fprintf(stderr,"Unknown verbose option: %c\n",*ch);
		    }
		}
	    }
            erts_printf("Verbose level: ");
            if (verbose & DEBUG_SYSTEM) erts_printf("SYSTEM ");
            if (verbose & DEBUG_PRIVATE_GC) erts_printf("PRIVATE_GC ");
            if (verbose & DEBUG_MEMORY) erts_printf("PARANOID_MEMORY ");
	    if (verbose & DEBUG_ALLOCATION) erts_printf("ALLOCATION ");
	    if (verbose & DEBUG_THREADS) erts_printf("THREADS ");
	    if (verbose & DEBUG_PROCESSES) erts_printf("PROCESSES ");
	    if (verbose & DEBUG_MESSAGES) erts_printf("MESSAGES ");
            erts_printf("\n");
#else
	    erts_fprintf(stderr, "warning: -v (only in debug compiled code)\n");
#endif
	    break;
	case 'V' :
	    {
		char tmp[256];

		tmp[0] = tmp[1] = '\0';
#ifdef DEBUG
		strcat(tmp, ",DEBUG");
#endif
#ifdef ERTS_SMP
		strcat(tmp, ",SMP");
#endif
#ifdef USE_THREADS
		strcat(tmp, ",ASYNC_THREADS");
#endif
#ifdef HIPE
		strcat(tmp, ",HIPE");
#endif
		erts_fprintf(stderr, "Erlang ");
		if (tmp[1]) {
		    erts_fprintf(stderr, "(%s) ", tmp+1);
		}
		erts_fprintf(stderr, "(" EMULATOR ") emulator version "
			   ERLANG_VERSION "\n");
		erl_exit(0, "");
	    }
	    break;

	case 'H':		/* undocumented */
	    fprintf(stderr, "The undocumented +H option has been removed (R10B-6).\n\n");
	    break;

	case 'h': {
	    char *sub_param = argv[i]+2;
	    /* set default heap size
	     *
	     * h|ms  - min_heap_size
	     * h|mbs - min_bin_vheap_size
	     *
	     */
	    if (has_prefix("mbs", sub_param)) {
		arg = get_arg(sub_param+3, argv[i+1], &i);
		if ((BIN_VH_MIN_SIZE = atoi(arg)) <= 0) {
		    erts_fprintf(stderr, "bad heap size %s\n", arg);
		    erts_usage();
		}
		VERBOSE(DEBUG_SYSTEM, ("using minimum binary virtual heap size %d\n", BIN_VH_MIN_SIZE));

	    } else if (has_prefix("ms", sub_param)) {
		arg = get_arg(sub_param+2, argv[i+1], &i);
		if ((H_MIN_SIZE = atoi(arg)) <= 0) {
		    erts_fprintf(stderr, "bad heap size %s\n", arg);
		    erts_usage();
		}
		VERBOSE(DEBUG_SYSTEM, ("using minimum heap size %d\n", H_MIN_SIZE));
	    } else {
	        /* backward compatibility */
		arg = get_arg(argv[i]+2, argv[i+1], &i);
		if ((H_MIN_SIZE = atoi(arg)) <= 0) {
		    erts_fprintf(stderr, "bad heap size %s\n", arg);
		    erts_usage();
		}
		VERBOSE(DEBUG_SYSTEM, ("using minimum heap size %d\n", H_MIN_SIZE));
	    }
	    break;
	}
	case 'd':
	    /*
	     * Never produce crash dumps for internally detected
	     * errors; only produce a core dump. (Generation of
	     * crash dumps is destructive and makes it impossible
	     * to inspect the contents of process heaps in the
	     * core dump.)
	     */
	    erts_no_crash_dump = 1;
	    break;

	case 'e':
	    if (sys_strcmp("c", argv[i]+2) == 0) {
		erts_ets_always_compress = 1;
	    }
	    else {
		/* set maximum number of ets tables */
		arg = get_arg(argv[i]+2, argv[i+1], &i);
		if (( user_requested_db_max_tabs = atoi(arg) ) < 0) {
		    erts_fprintf(stderr, "bad maximum number of ets tables %s\n", arg);
		    erts_usage();
		}
		VERBOSE(DEBUG_SYSTEM,
			("using maximum number of ets tables %d\n",
			 user_requested_db_max_tabs));
	    }
	    break;

	case 'i':
	    /* define name of module for initial function */
	    init = get_arg(argv[i]+2, argv[i+1], &i);
	    break;

	case 'b':
	    /* define name of initial function */
	    boot = get_arg(argv[i]+2, argv[i+1], &i);
	    break;

	case 'B':
	  if (argv[i][2] == 'i')          /* +Bi */
	    ignore_break = 1;
	  else if (argv[i][2] == 'c')     /* +Bc */
	    replace_intr = 1;
	  else if (argv[i][2] == 'd')     /* +Bd */
	    have_break_handler = 0;
	  else if (argv[i+1][0] == 'i') { /* +B i */
	    get_arg(argv[i]+2, argv[i+1], &i);
	    ignore_break = 1;
	  }
	  else if (argv[i+1][0] == 'c') { /* +B c */
	    get_arg(argv[i]+2, argv[i+1], &i);
	    replace_intr = 1;
	  }
	  else if (argv[i+1][0] == 'd') { /* +B d */
	    get_arg(argv[i]+2, argv[i+1], &i);
	    have_break_handler = 0;
	  }
	  else			          /* +B */
	    have_break_handler = 0;
	  break;

	case 'K':
	    /* If kernel poll support is present,
	       erl_sys_args() will remove the K parameter
	       and value */
	    get_arg(argv[i]+2, argv[i+1], &i);
	    erts_fprintf(stderr,
		       "kernel-poll not supported; \"K\" parameter ignored\n",
		       arg);
	    break;

	case 'P':
	    /* set maximum number of processes */
	    Parg = get_arg(argv[i]+2, argv[i+1], &i);
	    erts_proc.max = atoi(Parg);
	    /* Check of result is delayed until later. This is because +R
	       may be given after +P. */
	    break;

	case 'S' : /* Was handled in early_init() just read past it */
	    (void) get_arg(argv[i]+2, argv[i+1], &i);
	    break;

	case 's' : {
	    char *estr;
	    int res;
	    char *sub_param = argv[i]+2;
	    if (has_prefix("bt", sub_param)) {
		arg = get_arg(sub_param+2, argv[i+1], &i);
		res = erts_init_scheduler_bind_type_string(arg);
		if (res != ERTS_INIT_SCHED_BIND_TYPE_SUCCESS) {
		    switch (res) {
		    case ERTS_INIT_SCHED_BIND_TYPE_NOT_SUPPORTED:
			estr = "not supported";
			break;
		    case ERTS_INIT_SCHED_BIND_TYPE_ERROR_NO_CPU_TOPOLOGY:
			estr = "no cpu topology available";
			break;
		    case ERTS_INIT_SCHED_BIND_TYPE_ERROR_NO_BAD_TYPE:
			estr = "invalid type";
			break;
		    default:
			estr = "undefined error";
			break;
		    }
		    erts_fprintf(stderr,
				 "setting scheduler bind type '%s' failed: %s\n",
				 arg,
				 estr);
		    erts_usage();
		}
	    }
	    else if (has_prefix("bwt", sub_param)) {
		arg = get_arg(sub_param+3, argv[i+1], &i);
		if (erts_sched_set_busy_wait_threshold(arg) != 0) {
		    erts_fprintf(stderr, "bad scheduler busy wait threshold: %s\n",
				 arg);
		    erts_usage();
		}
		VERBOSE(DEBUG_SYSTEM,
			("scheduler wakup threshold: %s\n", arg));
	    }
	    else if (has_prefix("cl", sub_param)) {
		arg = get_arg(sub_param+2, argv[i+1], &i);
		if (sys_strcmp("true", arg) == 0)
		    erts_sched_compact_load = 1;
		else if (sys_strcmp("false", arg) == 0)
		    erts_sched_compact_load = 0;
		else {
		    erts_fprintf(stderr,
				 "bad scheduler compact load value '%s'\n",
				 arg);
		    erts_usage();
		}
	    }
	    else if (has_prefix("ct", sub_param)) {
		arg = get_arg(sub_param+2, argv[i+1], &i);
		res = erts_init_cpu_topology_string(arg);
		if (res != ERTS_INIT_CPU_TOPOLOGY_OK) {
		    switch (res) {
		    case ERTS_INIT_CPU_TOPOLOGY_INVALID_ID:
			estr = "invalid identifier";
			break;
		    case ERTS_INIT_CPU_TOPOLOGY_INVALID_ID_RANGE:
			estr = "invalid identifier range";
			break;
		    case ERTS_INIT_CPU_TOPOLOGY_INVALID_HIERARCHY:
			estr = "invalid hierarchy";
			break;
		    case ERTS_INIT_CPU_TOPOLOGY_INVALID_ID_TYPE:
			estr = "invalid identifier type";
			break;
		    case ERTS_INIT_CPU_TOPOLOGY_INVALID_NODES:
			estr = "invalid nodes declaration";
			break;
		    case ERTS_INIT_CPU_TOPOLOGY_MISSING_LID:
			estr = "missing logical identifier";
			break;
		    case ERTS_INIT_CPU_TOPOLOGY_NOT_UNIQUE_LIDS:
			estr = "not unique logical identifiers";
			break;
		    case ERTS_INIT_CPU_TOPOLOGY_NOT_UNIQUE_ENTITIES:
			estr = "not unique entities";
			break;
		    case ERTS_INIT_CPU_TOPOLOGY_MISSING:
			estr = "missing cpu topology";
			break;
		    default:
			estr = "undefined error";
			break;
		    }
		    erts_fprintf(stderr,
				 "bad cpu topology '%s': %s\n",
				 arg,
				 estr);
		    erts_usage();
		}
	    }
	    else if (sys_strcmp("nsp", sub_param) == 0)
		erts_use_sender_punish = 0;
	    else if (sys_strcmp("wt", sub_param) == 0) {
		arg = get_arg(sub_param+2, argv[i+1], &i);
		if (erts_sched_set_wakeup_other_thresold(arg) != 0) {
		    erts_fprintf(stderr, "scheduler wakeup threshold: %s\n",
				 arg);
		    erts_usage();
		}
		VERBOSE(DEBUG_SYSTEM,
			("scheduler wakeup threshold: %s\n", arg));
	    }
	    else if (sys_strcmp("ws", sub_param) == 0) {
		arg = get_arg(sub_param+2, argv[i+1], &i);
		if (erts_sched_set_wakeup_other_type(arg) != 0) {
		    erts_fprintf(stderr, "scheduler wakeup strategy: %s\n",
				 arg);
		    erts_usage();
		}
		VERBOSE(DEBUG_SYSTEM,
			("scheduler wakeup threshold: %s\n", arg));
	    }
	    else if (has_prefix("ss", sub_param)) {
		/* suggested stack size (Kilo Words) for scheduler threads */
		arg = get_arg(sub_param+2, argv[i+1], &i);
		erts_sched_thread_suggested_stack_size = atoi(arg);

		if ((erts_sched_thread_suggested_stack_size
		     < ERTS_SCHED_THREAD_MIN_STACK_SIZE)
		    || (erts_sched_thread_suggested_stack_size >
			ERTS_SCHED_THREAD_MAX_STACK_SIZE)) {
		    erts_fprintf(stderr, "bad stack size for scheduler threads %s\n",
				 arg);
		    erts_usage();
		}
		VERBOSE(DEBUG_SYSTEM,
			("suggested scheduler thread stack size %d kilo words\n",
			 erts_sched_thread_suggested_stack_size));
	    }
	    else {
		erts_fprintf(stderr, "bad scheduling option %s\n", argv[i]);
		erts_usage();
	    }
	    break;
	}
	case 't':
	    /* set atom table size */
	    arg = get_arg(argv[i]+2, argv[i+1], &i);
	    errno = 0;
	    erts_atom_table_size = strtol(arg, NULL, 10);
	    if (errno != 0 ||
		erts_atom_table_size < MIN_ATOM_TABLE_SIZE ||
		erts_atom_table_size > MAX_ATOM_TABLE_SIZE) {
		erts_fprintf(stderr, "bad atom table size %s\n", arg);
		erts_usage();
	    }
	    VERBOSE(DEBUG_SYSTEM,
                    ("setting maximum number of atoms to %d\n",
		     erts_atom_table_size));
	    break;

	case 'T' :
	    arg = get_arg(argv[i]+2, argv[i+1], &i);
	    errno = 0;
	    erts_modified_timing_level = atoi(arg);
	    if ((erts_modified_timing_level == 0 && errno != 0)
		|| erts_modified_timing_level < 0
		|| erts_modified_timing_level >= ERTS_MODIFIED_TIMING_LEVELS) {
		erts_fprintf(stderr, "bad modified timing level %s\n", arg);
		erts_usage();
	    }
	    else {
		VERBOSE(DEBUG_SYSTEM,
			("using modified timing level %d\n",
			 erts_modified_timing_level));
	    }

	    break;

	case 'R': {
	    /* set compatibility release */

	    arg = get_arg(argv[i]+2, argv[i+1], &i);
	    erts_compat_rel = atoi(arg);

	    if (erts_compat_rel < ERTS_MIN_COMPAT_REL
		|| erts_compat_rel > this_rel_num()) {
		erts_fprintf(stderr, "bad compatibility release number %s\n", arg);
		erts_usage();
	    }

	    ASSERT(ERTS_MIN_COMPAT_REL >= 7);
	    switch (erts_compat_rel) {
	    case 7:
	    case 8:
	    case 9:
		erts_use_r9_pids_ports = 1;
	    default:
		break;
	    }

	    break;
	}

	case 'A': /* Was handled in early init just read past it */
	    (void) get_arg(argv[i]+2, argv[i+1], &i);
	    break;

	case 'a':
	    /* suggested stack size (Kilo Words) for threads in thread pool */
	    arg = get_arg(argv[i]+2, argv[i+1], &i);
	    erts_async_thread_suggested_stack_size = atoi(arg);
	    
	    if ((erts_async_thread_suggested_stack_size
		 < ERTS_ASYNC_THREAD_MIN_STACK_SIZE)
		|| (erts_async_thread_suggested_stack_size >
		    ERTS_ASYNC_THREAD_MAX_STACK_SIZE)) {
		erts_fprintf(stderr, "bad stack size for async threads %s\n",
			     arg);
		erts_usage();
	    }

	    VERBOSE(DEBUG_SYSTEM,
		    ("suggested async-thread stack size %d kilo words\n",
		     erts_async_thread_suggested_stack_size));
	    break;

	case 'r': {
	    char *sub_param = argv[i]+2;
	    if (has_prefix("g", sub_param)) {
		get_arg(sub_param+1, argv[i+1], &i);
		/* already handled */
	    }
	    else {
		erts_ets_realloc_always_moves = 1;
	    }
	    break;
	}
	case 'n':   /* XXX obsolete */
	    break;
	case 'c':
	    if (argv[i][2] == 0) { /* -c: documented option */
		erts_disable_tolerant_timeofday = 1;
	    }
#ifdef ERTS_OPCODE_COUNTER_SUPPORT
	    else if (argv[i][2] == 'i') { /* -ci: undcoumented option*/
		count_instructions = 1;
	    }
#endif
	    break;
	case 'W':
	    arg = get_arg(argv[i]+2, argv[i+1], &i);
	    switch (arg[0]) {
	    case 'i':
		erts_error_logger_warnings = am_info;
		break;
	    case 'w':
		erts_error_logger_warnings = am_warning;
		break;
	    case 'e': /* The default */
		erts_error_logger_warnings = am_error;
	    default:
		erts_fprintf(stderr, "unrecognized warning_map option %s\n", arg);
		erts_usage();
	    }
	    break;

	case 'z': {
	    char *sub_param = argv[i]+2;
	    int new_limit;

	    if (has_prefix("dbbl", sub_param)) {
		arg = get_arg(sub_param+4, argv[i+1], &i);
		new_limit = atoi(arg);
		if (new_limit < 1 || INT_MAX/1024 < new_limit) {
		    erts_fprintf(stderr, "Invalid dbbl limit: %d\n", new_limit);
		    erts_usage();
		} else {
		    erts_dist_buf_busy_limit = new_limit*1024;
		}
	    } else {
		erts_fprintf(stderr, "bad -z option %s\n", argv[i]);
		erts_usage();
	    }
	    break;
        }

	default:
	    erts_fprintf(stderr, "%s unknown flag %s\n", argv[0], argv[i]);
	    erts_usage();
	}
	i++;
    }

    /* Delayed check of +P flag */
    if (erts_proc.max < ERTS_MIN_PROCESSES
	|| erts_proc.max > ERTS_MAX_PROCESSES
	|| (erts_use_r9_pids_ports
	    && erts_proc.max > ERTS_MAX_R9_PROCESSES)) {
	erts_fprintf(stderr, "bad number of processes %s\n", Parg);
	erts_usage();
    }

   /* Restart will not reinstall the break handler */
#ifdef __WIN32__
    if (ignore_break)
	erts_set_ignore_break();
    else if (replace_intr)
	erts_replace_intr();
    else
	init_break_handler();
#else
    if (ignore_break)
	erts_set_ignore_break();
    else if (have_break_handler)
	init_break_handler();
    if (replace_intr)
	erts_replace_intr();
#endif

    boot_argc = argc - i;  /* Number of arguments to init */
    boot_argv = &argv[i];

    erl_init(ncpu);

    load_preloaded();
    erts_end_staging_code_ix();
    erts_commit_staging_code_ix();

    erts_initialized = 1;

    erl_first_process_otp("otp_ring0", NULL, 0, boot_argc, boot_argv);

#ifdef ERTS_SMP
    erts_start_schedulers();
    /* Let system specific code decide what to do with the main thread... */

    erts_sys_main_thread(); /* May or may not return! */
#else
    erts_thr_set_main_status(1, 1);
#if ERTS_USE_ASYNC_READY_Q
    erts_get_scheduler_data()->aux_work_data.async_ready.queue
	= erts_get_async_ready_queue(1);
#endif
    set_main_stack_size();
    process_main();
#endif
}
示例#5
0
static int
early_init(int *argc, char **argv) /*
				   * Only put things here which are
				   * really important initialize
				   * early!
				   */
{
    ErtsAllocInitOpts alloc_opts = ERTS_ALLOC_INIT_DEF_OPTS_INITER;
    int ncpu;
    int ncpuonln;
    int ncpuavail;
    int schdlrs;
    int schdlrs_onln;
    int max_main_threads;
    int max_reader_groups;
    int reader_groups;
    char envbuf[21]; /* enough for any 64-bit integer */
    size_t envbufsz;

    erts_sched_compact_load = 1;
    erts_printf_eterm_func = erts_printf_term;
    erts_disable_tolerant_timeofday = 0;
    display_items = 200;
    erts_proc.max = ERTS_DEFAULT_MAX_PROCESSES;
    erts_backtrace_depth = DEFAULT_BACKTRACE_SIZE;
    erts_async_max_threads = 0;
    erts_async_thread_suggested_stack_size = ERTS_ASYNC_THREAD_MIN_STACK_SIZE;
    H_MIN_SIZE = H_DEFAULT_SIZE;
    BIN_VH_MIN_SIZE = VH_DEFAULT_SIZE;

    erts_initialized = 0;

    erts_use_sender_punish = 1;

    erts_pre_early_init_cpu_topology(&max_reader_groups,
				     &ncpu,
				     &ncpuonln,
				     &ncpuavail);
#ifndef ERTS_SMP
    ncpu = 1;
    ncpuonln = 1;
    ncpuavail = 1;
#endif

    ignore_break = 0;
    replace_intr = 0;
    program = argv[0];

    erts_modified_timing_level = -1;

    erts_compat_rel = this_rel_num();

    erts_use_r9_pids_ports = 0;

    erts_sys_pre_init();
    erts_atomic_init_nob(&exiting, 0);
#ifdef ERTS_SMP
    erts_thr_progress_pre_init();
#endif

#ifdef ERTS_ENABLE_LOCK_CHECK
    erts_lc_init();
#endif
#ifdef ERTS_SMP
    erts_smp_atomic32_init_nob(&erts_writing_erl_crash_dump, 0L);
    erts_tsd_key_create(&erts_is_crash_dumping_key);
#else
    erts_writing_erl_crash_dump = 0;
#endif

    erts_smp_atomic32_init_nob(&erts_max_gen_gcs,
			       (erts_aint32_t) ((Uint16) -1));

    erts_pre_init_process();
#if defined(USE_THREADS) && !defined(ERTS_SMP)
    main_thread = erts_thr_self();
#endif

    /*
     * We need to know the number of schedulers to use before we
     * can initialize the allocators.
     */
    no_schedulers = (Uint) (ncpu > 0 ? ncpu : 1);
    no_schedulers_online = (ncpuavail > 0
			    ? ncpuavail
			    : (ncpuonln > 0 ? ncpuonln : no_schedulers));

    schdlrs = no_schedulers;
    schdlrs_onln = no_schedulers_online;

    envbufsz = sizeof(envbuf);

    /* erts_sys_getenv() not initialized yet; need erts_sys_getenv__() */
    if (erts_sys_getenv__("ERL_THREAD_POOL_SIZE", envbuf, &envbufsz) == 0)
	erts_async_max_threads = atoi(envbuf);
    else
	erts_async_max_threads = 0;
    if (erts_async_max_threads > ERTS_MAX_NO_OF_ASYNC_THREADS)
	erts_async_max_threads = ERTS_MAX_NO_OF_ASYNC_THREADS;

    if (argc && argv) {
	int i = 1;
	while (i < *argc) {
	    if (strcmp(argv[i], "--") == 0) { /* end of emulator options */
		i++;
		break;
	    }
	    if (argv[i][0] == '-') {
		switch (argv[i][1]) {
		case 'r': {
		    char *sub_param = argv[i]+2;
		    if (has_prefix("g", sub_param)) {
			char *arg = get_arg(sub_param+1, argv[i+1], &i);
			if (sscanf(arg, "%d", &max_reader_groups) != 1) {
			    erts_fprintf(stderr,
					 "bad reader groups limit: %s\n", arg);
			    erts_usage();
			}
			if (max_reader_groups < 0) {
			    erts_fprintf(stderr,
					 "bad reader groups limit: %d\n",
					 max_reader_groups);
			    erts_usage();
			}
		    }
		    break;
		}
		case 'A': {
		    /* set number of threads in thread pool */
		    char *arg = get_arg(argv[i]+2, argv[i+1], &i);
		    if (((erts_async_max_threads = atoi(arg)) < 0) ||
			(erts_async_max_threads > ERTS_MAX_NO_OF_ASYNC_THREADS)) {
			erts_fprintf(stderr,
				     "bad number of async threads %s\n",
				     arg);
			erts_usage();
			VERBOSE(DEBUG_SYSTEM, ("using %d async-threads\n",
					       erts_async_max_threads));
		    }
		    break;
		}
		case 'S' : {
		    int tot, onln;
		    char *arg = get_arg(argv[i]+2, argv[i+1], &i);
		    switch (sscanf(arg, "%d:%d", &tot, &onln)) {
		    case 0:
			switch (sscanf(arg, ":%d", &onln)) {
			case 1:
			    tot = no_schedulers;
			    goto chk_S;
			default:
			    goto bad_S;
			}
		    case 1:
			onln = tot < schdlrs_onln ? tot : schdlrs_onln;
		    case 2:
		    chk_S:
			if (tot > 0)
			    schdlrs = tot;
			else
			    schdlrs = no_schedulers + tot;
			if (onln > 0)
			    schdlrs_onln = onln;
			else
			    schdlrs_onln = no_schedulers_online + onln;
			if (schdlrs < 1 || ERTS_MAX_NO_OF_SCHEDULERS < schdlrs) {
			    erts_fprintf(stderr,
					 "bad amount of schedulers %d\n",
					 tot);
			    erts_usage();
			}
			if (schdlrs_onln < 1 || schdlrs < schdlrs_onln) {
			    erts_fprintf(stderr,
					 "bad amount of schedulers online %d "
					 "(total amount of schedulers %d)\n",
					 schdlrs_onln, schdlrs);
			    erts_usage();
			}
			break;
		    default:
		    bad_S:
			erts_fprintf(stderr,
				     "bad amount of schedulers %s\n",
				     arg);
			erts_usage();
			break;
		    }

		    VERBOSE(DEBUG_SYSTEM,
			    ("using %d:%d scheduler(s)\n", tot, onln));
		    break;
		}
		default:
		    break;
		}
	    }
	    i++;
	}
    }

#ifndef USE_THREADS
    erts_async_max_threads = 0;
#endif

#ifdef ERTS_SMP
    no_schedulers = schdlrs;
    no_schedulers_online = schdlrs_onln;

    erts_no_schedulers = (Uint) no_schedulers;
#endif
    erts_early_init_scheduling(no_schedulers);

    alloc_opts.ncpu = ncpu;
    erts_alloc_init(argc, argv, &alloc_opts); /* Handles (and removes)
						 -M flags. */
    /* Require allocators */
#ifdef ERTS_SMP
    /*
     * Thread progress management:
     *
     * * Managed threads:
     * ** Scheduler threads (see erl_process.c)
     * ** Aux thread (see erl_process.c)
     * ** Sys message dispatcher thread (see erl_trace.c)
     *
     * * Unmanaged threads that need to register:
     * ** Async threads (see erl_async.c)
     */
    erts_thr_progress_init(no_schedulers,
			   no_schedulers+2,
			   erts_async_max_threads);
#endif
    erts_thr_q_init();
    erts_init_utils();
    erts_early_init_cpu_topology(no_schedulers,
				 &max_main_threads,
				 max_reader_groups,
				 &reader_groups);

#ifdef USE_THREADS
    {
	erts_thr_late_init_data_t elid = ERTS_THR_LATE_INIT_DATA_DEF_INITER;
	elid.mem.std.alloc = ethr_std_alloc;
	elid.mem.std.realloc = ethr_std_realloc;
	elid.mem.std.free = ethr_std_free;
	elid.mem.sl.alloc = ethr_sl_alloc;
	elid.mem.sl.realloc = ethr_sl_realloc;
	elid.mem.sl.free = ethr_sl_free;
	elid.mem.ll.alloc = ethr_ll_alloc;
	elid.mem.ll.realloc = ethr_ll_realloc;
	elid.mem.ll.free = ethr_ll_free;
	elid.main_threads = max_main_threads;
	elid.reader_groups = reader_groups;

	erts_thr_late_init(&elid);
    }
#endif

#ifdef ERTS_ENABLE_LOCK_CHECK
    erts_lc_late_init();
#endif
    
#ifdef ERTS_ENABLE_LOCK_COUNT
    erts_lcnt_late_init();
#endif

#if defined(HIPE)
    hipe_signal_init();	/* must be done very early */
#endif

    erl_sys_args(argc, argv);

    /* Creates threads on Windows that depend on the arguments, so has to be after erl_sys_args */
    erl_sys_init();

    erts_ets_realloc_always_moves = 0;
    erts_ets_always_compress = 0;
    erts_dist_buf_busy_limit = ERTS_DE_BUSY_LIMIT;

    return ncpu;
}
示例#6
0
文件: sys.c 项目: weisslj/otp
void
erl_sys_args(int* argc, char** argv)
{
    int i, j;

    erts_smp_rwmtx_init(&environ_rwmtx, "environ");

    i = 1;

    ASSERT(argc && argv);

    while (i < *argc) {
	if(argv[i][0] == '-') {
	    switch (argv[i][1]) {
#ifdef ERTS_ENABLE_KERNEL_POLL
	    case 'K': {
		char *arg = get_value(argv[i] + 2, argv, &i);
		if (strcmp("true", arg) == 0) {
		    erts_use_kernel_poll = 1;
		}
		else if (strcmp("false", arg) == 0) {
		    erts_use_kernel_poll = 0;
		}
		else {
		    erts_fprintf(stderr, "bad \"K\" value: %s\n", arg);
		    erts_usage();
		}
		break;
	    }
#endif
	    case '-':
		goto done_parsing;
	    default:
		break;
	    }
	}
	i++;
    }

 done_parsing:

#ifdef ERTS_ENABLE_KERNEL_POLL
    if (erts_use_kernel_poll) {
	char no_kp[10];
	size_t no_kp_sz = sizeof(no_kp);
	int res = erts_sys_getenv_raw("ERL_NO_KERNEL_POLL", no_kp, &no_kp_sz);
	if (res > 0
	    || (res == 0
		&& sys_strcmp("false", no_kp) != 0
		&& sys_strcmp("FALSE", no_kp) != 0)) {
	    erts_use_kernel_poll = 0;
	}
    }
#endif

    init_check_io();

#ifdef ERTS_SMP
    init_smp_sig_notify();
    init_smp_sig_suspend();
#endif

    /* 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;
}