archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-26 14:24:46 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8010460: Interpreter on some platforms loads ConstMethod::_max_stack and misses extra stack slots for JSR 292

Browse source 
ConstMethod::max_stack() doesn't account for JSR 292 appendix.

Reviewed-by: kvn
This commit is contained in:
Roland Westrelin 2013-04-24 11:49:38 +02:00
parent 34f8be0bc9
commit 6ae26f2e94
9 changed files with 39 additions and 42 deletions
Download patch file Download diff file Expand all files Collapse all files

20
hotspot/src/share/vm/interpreter/bytecodeInterpreter.cpp
View file

@ -468,7 +468,25 @@ BytecodeInterpreter::run(interpreterState istate) {
#ifdef ASSERT
if (istate->_msg != initialize) {
assert(abs(istate->_stack_base - istate->_stack_limit) == (istate->_method->max_stack() + 1), "bad stack limit");
// We have a problem here if we are running with a pre-hsx24 JDK (for example during bootstrap)
// because in that case, EnableInvokeDynamic is true by default but will be later switched off
// if java_lang_invoke_MethodHandle::compute_offsets() detects that the JDK only has the classes
// for the old JSR292 implementation.
// This leads to a situation where 'istate->_stack_limit' always accounts for
// methodOopDesc::extra_stack_entries() because it is computed in
// CppInterpreterGenerator::generate_compute_interpreter_state() which was generated while
// EnableInvokeDynamic was still true. On the other hand, istate->_method->max_stack() doesn't
// account for extra_stack_entries() anymore because at the time when it is called
// EnableInvokeDynamic was already set to false.
// So we have a second version of the assertion which handles the case where EnableInvokeDynamic was
// switched off because of the wrong classes.
if (EnableInvokeDynamic || FLAG_IS_CMDLINE(EnableInvokeDynamic)) {
assert(abs(istate->_stack_base - istate->_stack_limit) == (istate->_method->max_stack() + 1), "bad stack limit");
} else {
const int extra_stack_entries = Method::extra_stack_entries_for_indy;
assert(labs(istate->_stack_base - istate->_stack_limit) == (istate->_method->max_stack() + extra_stack_entries
+ 1), "bad stack limit");
}
#ifndef SHARK
IA32_ONLY(assert(istate->_stack_limit == istate->_thread->last_Java_sp() + 1, "wrong"));
#endif // !SHARK