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Class: RubyVM::YJIT::Block

Relationships & Source Files
Inherits: Object
Defined in: yjit_iface.c

Overview

Block (block version, code block)

Instance Method Summary

Instance Method Details

#address

Get the address of the code associated with a Block

[ GitHub ] 

  


# File 'yjit_iface.c', line 533



static VALUE
block_address(VALUE self)
{
    block_t * block;
    TypedData_Get_Struct(self, block_t, &yjit_block_type, block);
    return LONG2NUM((intptr_t)block->start_addr);
}


  








  

    #code  
  



  

    

Get the machine code for Block as a binary string


  



  [ GitHub ]


  

  


# File 'yjit_iface.c', line 542



static VALUE
block_code(VALUE self)
{
    block_t * block;
    TypedData_Get_Struct(self, block_t, &yjit_block_type, block);

    return (VALUE)rb_str_new(
        (const char*)block->start_addr,
        block->end_addr - block->start_addr
    );
}


  








  

    #id  ⇒ unique_id   



  

    

Returns a unique integer ID for the block.  For example:



blocks = blocks_for(iseq)
blocks.group_by(&:id)


  



  [ GitHub ]


  

  


# File 'yjit_iface.c', line 1193



static VALUE
block_id(VALUE self)
{
    block_t * block;
    TypedData_Get_Struct(self, block_t, &yjit_block_type, block);
    return PTR2NUM(block);
}


  








  

    #iseq_end_index  
  



  

    

Get the end index in the Instruction Sequence that corresponds to this Block


  



  [ GitHub ]


  

  


# File 'yjit_iface.c', line 567



static VALUE
iseq_end_index(VALUE self)
{
    block_t * block;
    TypedData_Get_Struct(self, block_t, &yjit_block_type, block);

    return INT2NUM(block->end_idx);
}


  








  

    #iseq_start_index  
  



  

    

Get the start index in the Instruction Sequence that corresponds to this Block


  



  [ GitHub ]


  

  


# File 'yjit_iface.c', line 556



static VALUE
iseq_start_index(VALUE self)
{
    block_t * block;
    TypedData_Get_Struct(self, block_t, &yjit_block_type, block);

    return INT2NUM(block->blockid.idx);
}


  








  

    #outgoing_ids  ⇒ list   



  

    

Returns a list of outgoing ids for the current block.  This list can be used in conjunction with #id to construct a graph of block objects.


  



  [ GitHub ]


  

  


# File 'yjit_iface.c', line 1207



static VALUE
outgoing_ids(VALUE self)
{
    block_t * block;
    TypedData_Get_Struct(self, block_t, &yjit_block_type, block);

    VALUE ids = rb_ary_new();

    rb_darray_for(block->outgoing, branch_idx) {
        branch_t *out_branch = rb_darray_get(block->outgoing, branch_idx);

        for (size_t succ_idx = 0; succ_idx < 2; succ_idx++) {
            block_t *succ = out_branch->blocks[succ_idx];

            if (succ == NULL)
                continue;

            rb_ary_push(ids, PTR2NUM(succ));
        }

    }

    return ids;
}