Class: RubyVM

Inherits:
Object show all
Defined in:
vm.c,
vm.c

Overview

The RubyVM module only exists on MRI. RubyVM is not defined in other Ruby implementations such as JRuby and TruffleRuby.

The RubyVM module provides some access to MRI internals. This module is for very limited purposes, such as debugging, prototyping, and research. Normal users must not use it. This module is not portable between Ruby implementations.

Defined Under Namespace

Modules: AbstractSyntaxTree, MJIT Classes: InstructionSequence

Constant Summary collapse

OPTS =

RubyVM::OPTS An Array of VM build options. This constant is MRI specific.

:
INSTRUCTION_NAMES =

RubyVM::INSTRUCTION_NAMES A list of bytecode instruction names in MRI. This constant is MRI specific.

:
DEFAULT_PARAMS =

RubyVM::DEFAULT_PARAMS This constant exposes the VM’s default parameters. Note that changing these values does not affect VM execution. Specification is not stable and you should not depend on this value. Of course, this constant is MRI specific.

:

Class Method Summary collapse

Class Method Details

.each_builtinObject



64
65
66
67
68
69
# File 'mini_builtin.c', line 64

static VALUE
each_builtin(VALUE self)
{
    st_foreach(loaded_builtin_table, each_builtin_i, 0);
    return Qnil;
}

.mtbl(obj, sym) ⇒ Object



3301
3302
3303
3304
3305
3306
# File 'vm.c', line 3301

static VALUE
vm_mtbl(VALUE self, VALUE obj, VALUE sym)
{
    vm_mtbl_dump(CLASS_OF(obj), RTEST(sym) ? SYM2ID(sym) : 0);
    return Qnil;
}

.mtbl2(obj, sym) ⇒ Object



3308
3309
3310
3311
3312
3313
# File 'vm.c', line 3308

static VALUE
vm_mtbl2(VALUE self, VALUE obj, VALUE sym)
{
    vm_mtbl_dump(obj, RTEST(sym) ? SYM2ID(sym) : 0);
    return Qnil;
}

.NSDRObject

:nodoc:



3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
# File 'vm.c', line 3244

static VALUE
nsdr(VALUE self)
{
    VALUE ary = rb_ary_new();
#if HAVE_BACKTRACE
#include <execinfo.h>
#define MAX_NATIVE_TRACE 1024
    static void *trace[MAX_NATIVE_TRACE];
    int n = (int)backtrace(trace, MAX_NATIVE_TRACE);
    char **syms = backtrace_symbols(trace, n);
    int i;

    if (syms == 0) {
	rb_memerror();
    }

    for (i=0; i<n; i++) {
	rb_ary_push(ary, rb_str_new2(syms[i]));
    }
    free(syms); /* OK */
#endif
    return ary;
}

.reset_debug_countersObject

.SDRObject

:nodoc:



3236
3237
3238
3239
3240
3241
# File 'vm.c', line 3236

static VALUE
sdr(VALUE self)
{
    rb_vm_bugreport(NULL);
    return Qnil;
}

.show_debug_countersObject

.statHash .stat(hsh) ⇒ Hash .stat(Symbol) ⇒ Numeric

Returns a Hash containing implementation-dependent counters inside the VM.

This hash includes information about method/constant cache serials:

{
  :global_constant_state=>481,
  :class_serial=>9029
}

The contents of the hash are implementation specific and may be changed in the future.

This method is only expected to work on C Ruby.

Overloads:



487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
# File 'vm.c', line 487

static VALUE
vm_stat(int argc, VALUE *argv, VALUE self)
{
    static VALUE sym_global_constant_state, sym_class_serial;
    VALUE arg = Qnil;
    VALUE hash = Qnil, key = Qnil;

    if (rb_check_arity(argc, 0, 1) == 1) {
        arg = argv[0];
	if (SYMBOL_P(arg))
	    key = arg;
	else if (RB_TYPE_P(arg, T_HASH))
	    hash = arg;
	else
	    rb_raise(rb_eTypeError, "non-hash or symbol given");
    }
    else {
	hash = rb_hash_new();
    }

    if (sym_global_constant_state == 0) {
#define S(s) sym_##s = ID2SYM(rb_intern_const(#s))
	S(global_constant_state);
	S(class_serial);
#undef S
    }

#define SET(name, attr) \
    if (key == sym_##name) \
	return SERIALT2NUM(attr); \
    else if (hash != Qnil) \
	rb_hash_aset(hash, sym_##name, SERIALT2NUM(attr));

    SET(global_constant_state, ruby_vm_global_constant_state);
    SET(class_serial, ruby_vm_class_serial);
#undef SET

    if (!NIL_P(key)) { /* matched key should return above */
	rb_raise(rb_eArgError, "unknown key: %"PRIsVALUE, rb_sym2str(key));
    }

    return hash;
}

.USAGE_ANALYSIS_INSN_CLEARObject



3278
# File 'vm.c', line 3278

static VALUE usage_analysis_insn_clear(VALUE self);

.USAGE_ANALYSIS_INSN_RUNNINGObject



3275
# File 'vm.c', line 3275

static VALUE usage_analysis_insn_running(VALUE self);

.USAGE_ANALYSIS_INSN_STARTObject



3269
# File 'vm.c', line 3269

static VALUE usage_analysis_insn_start(VALUE self);

.USAGE_ANALYSIS_INSN_STOPObject



3272
# File 'vm.c', line 3272

static VALUE usage_analysis_insn_stop(VALUE self);

.USAGE_ANALYSIS_OPERAND_CLEARObject



3279
# File 'vm.c', line 3279

static VALUE usage_analysis_operand_clear(VALUE self);

.USAGE_ANALYSIS_OPERAND_RUNNINGObject



3276
# File 'vm.c', line 3276

static VALUE usage_analysis_operand_running(VALUE self);

.USAGE_ANALYSIS_OPERAND_STARTObject



3270
# File 'vm.c', line 3270

static VALUE usage_analysis_operand_start(VALUE self);

.USAGE_ANALYSIS_OPERAND_STOPObject



3273
# File 'vm.c', line 3273

static VALUE usage_analysis_operand_stop(VALUE self);

.USAGE_ANALYSIS_REGISTER_CLEARObject



3280
# File 'vm.c', line 3280

static VALUE usage_analysis_register_clear(VALUE self);

.USAGE_ANALYSIS_REGISTER_RUNNINGObject



3277
# File 'vm.c', line 3277

static VALUE usage_analysis_register_running(VALUE self);

.USAGE_ANALYSIS_REGISTER_STARTObject



3271
# File 'vm.c', line 3271

static VALUE usage_analysis_register_start(VALUE self);

.USAGE_ANALYSIS_REGISTER_STOPObject



3274
# File 'vm.c', line 3274

static VALUE usage_analysis_register_stop(VALUE self);