Bytecode Instrumentation

| 2004 JavaOne

Conference | Session 3042 Copyright Hewlett Packard Co., 2004.

static ByteOffset

injection_template(MethodImage *mi,

ByteCode *bytecodes,

ByteOffset max_nbytes,

CrwCpoolIndex method_index)

{

max_stack = mi->max_stack + 2;

nbytes += push_pool_constant_bytecodes(

bytecodes+nbytes, ci->class_num

ber_index);

nbytes += push_short_constant_bytecodes(

bytecodes+nbytes, mi->num

ber);

bytecodes[nbytes++] = (ByteCode)opc_invokestatic;

bytecodes[nbytes++] = (ByteCode)(method_index >> 8);

bytecodes[nbytes++] = (ByteCode)method_index;

bytecodes[nbytes] = 0;

/* Check max stack value */

if ( max_stack > mi->new_max_stack ) {

mi->new_max_stack = max_stack;

}

Generating the bytecodes