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Posted to commits@harmony.apache.org by "Mikhail Fursov (JIRA)" <ji...@apache.org> on 2007/05/28 16:44:15 UTC
[jira] Updated: (HARMONY-3727) [drlvm][jit] Race condition at
function Jitrino::Type::Type(enum Jitrino::Type::Tag) "type.h":144
[ https://issues.apache.org/jira/browse/HARMONY-3727?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mikhail Fursov updated HARMONY-3727:
------------------------------------
Attachment: type.diff
After a small investigation I've found that this is not a real bug because typeId is never used out of compilation session.
the fix I attach adds unsafe regions markers to the problem code.
> [drlvm][jit] Race condition at function Jitrino::Type::Type(enum Jitrino::Type::Tag) "type.h":144
> -------------------------------------------------------------------------------------------------
>
> Key: HARMONY-3727
> URL: https://issues.apache.org/jira/browse/HARMONY-3727
> Project: Harmony
> Issue Type: Bug
> Components: DRLVM
> Reporter: Ilya Leviev
> Attachments: type.diff
>
>
> There are thread unsafe operations at function Jitrino::Type::Type(enum Jitrino::Type::Tag) "type.h":144
> Write -> Write data-race. Memory write at "type.h":144 conflicts with a prior memory write at "type.h":144
> Here is stack traces of the issue.
> Context
> Function compile_do_compilation "compile.cpp":770
> Function CompileMethod "em_intf.cpp":49
> Function enum JIT_Result DrlEMImpl::compileMethod(struct Method *) "drlemimpl.cpp":540
> Function vm_compile_method "c_interface.cpp":2492
> Function enum JIT_Result compile_do_compilation_jit(struct Method *,class JIT *) "compile.cpp":657
> Function enum JIT_Result Dll_JIT::compile_method_with_params(void *,struct Method *,struct OpenMethodExecutionParams) "dll_jit_intf.h":86
> Function JIT_compile_method_with_params "drljitinterface.cpp":244
> Function Jitrino::TypeManager::TypeManager(class Jitrino::MemoryManager &) "type.cpp":341
> Function Jitrino::ValueType::ValueType(enum Jitrino::Type::Tag) "type.h":465
> Function Jitrino::Type::Type(enum Jitrino::Type::Tag) "type.h":144
>
> 1st Access
> Function CompileMethod "em_intf.cpp":49
> Function enum JIT_Result DrlEMImpl::compileMethod(struct Method *) "drlemimpl.cpp":540
> Function vm_compile_method "c_interface.cpp":2492
> Function enum JIT_Result compile_do_compilation_jit(struct Method *,class JIT *) "compile.cpp":657
> Function enum JIT_Result Dll_JIT::compile_method_with_params(void *,struct Method *,struct OpenMethodExecutionParams) "dll_jit_intf.h":86
> Function JIT_compile_method_with_params "drljitinterface.cpp":244
> Function void Jitrino::TypeManager::init(void) "type.cpp":379
> Function Jitrino::ObjectType::ObjectType(enum Jitrino::Type::Tag,void *,class Jitrino::TypeManager &) "type.h":501
> Function Jitrino::NamedType::NamedType(enum Jitrino::Type::Tag,void *,class Jitrino::TypeManager &) "type.h":440
> Function Jitrino::Type::Type(enum Jitrino::Type::Tag) "type.h":144
>
> 2nd Access
> Function compile_do_compilation "compile.cpp":770
> Function CompileMethod "em_intf.cpp":49
> Function enum JIT_Result DrlEMImpl::compileMethod(struct Method *) "drlemimpl.cpp":540
> Function vm_compile_method "c_interface.cpp":2492
> Function enum JIT_Result compile_do_compilation_jit(struct Method *,class JIT *) "compile.cpp":657
> Function enum JIT_Result Dll_JIT::compile_method_with_params(void *,struct Method *,struct OpenMethodExecutionParams) "dll_jit_intf.h":86
> Function JIT_compile_method_with_params "drljitinterface.cpp":244
> Function Jitrino::TypeManager::TypeManager(class Jitrino::MemoryManager &) "type.cpp":341
> Function Jitrino::ValueType::ValueType(enum Jitrino::Type::Tag) "type.h":465
> Function Jitrino::Type::Type(enum Jitrino::Type::Tag) "type.h":144
>
>
>
> "" "139" "" " Singleton,"
> "" "140" "" " "
> "" "141" "" " NumTypeTags,"
> "" "142" "" " InavlidTag = NumTypeTags"
> "" "143" "" " };"
> "0x519A0" "144" "*" " Type(Tag t) : tag(t), id(++nextTypeId) {}" <---
> "" "145" "" " virtual ~Type() {}"
> "" "146" "" " "
>
>
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