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
}
}
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;
}
/* 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;
}
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
}
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;
}
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;
}
