forks/go-ethereum
1
0
Fork 1
mirror of https://github.com/ethereum/go-ethereum.git synced 2026-07-22 04:36:42 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Comment about MCJIT and caching pointers to entry functions

Browse source
This commit is contained in:
Paweł Bylica 2014-12-16 18:40:19 +01:00
parent 91cd37e98d
commit c2699b32ee
1 changed files with 8 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
libevmjit/ExecutionEngine.cpp
View file

@ -111,6 +111,14 @@ namespace
{ {
ReturnCode runEntryFunc(ExecBundle const& _exec, Runtime* _runtime) ReturnCode runEntryFunc(ExecBundle const& _exec, Runtime* _runtime)
{ {
// That function uses long jumps to handle "execeptions".
// Do not create any non-POD objects here
// TODO:
// Getting pointer to function seems to be cachable,
// but it looks like getPointerToFunction() method does something special
// to allow function to be executed.
// That might be related to memory manager. Can we share one?
typedef ReturnCode(*EntryFuncPtr)(Runtime*); typedef ReturnCode(*EntryFuncPtr)(Runtime*);
auto entryFuncVoidPtr = _exec.engine->getPointerToFunction(_exec.entryFunc); auto entryFuncVoidPtr = _exec.engine->getPointerToFunction(_exec.entryFunc);
auto entryFuncPtr = static_cast<EntryFuncPtr>(entryFuncVoidPtr); auto entryFuncPtr = static_cast<EntryFuncPtr>(entryFuncVoidPtr);