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Posted to commits@harmony.apache.org by "Ilya Leviev (JIRA)" <ji...@apache.org> on 2007/05/14 17:56:16 UTC
[jira] Updated: (HARMONY-3855) [drlvm][jit] Known/proven race
conditions markup at \vm\jitrino\src\jet\cg.cpp (L:125)
[ https://issues.apache.org/jira/browse/HARMONY-3855?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ilya Leviev updated HARMONY-3855:
---------------------------------
Attachment: HARMONY-3855_add_markup.patch
> [drlvm][jit] Known/proven race conditions markup at \vm\jitrino\src\jet\cg.cpp (L:125)
> --------------------------------------------------------------------------------------
>
> Key: HARMONY-3855
> URL: https://issues.apache.org/jira/browse/HARMONY-3855
> Project: Harmony
> Issue Type: Bug
> Components: DRLVM
> Reporter: Ilya Leviev
> Priority: Minor
> Attachments: HARMONY-3855_add_markup.patch
>
>
> There are thread unsafe access that result in race condition that occur during concurrent execution of gen_check_null function
> If it not affect correctness of execution I have marked it by special API for prevention of further alarms on this race.
> Write ->Write data-race
> Memory write at "cg.cpp":125 conflicts with a prior memory write at "cg.cpp":125 (output dependence)
> Stack Traces:
> Context
> 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":275
> Function enum JIT_Result Jitrino::Jet::compile_with_params(void *,void *,struct Method *,struct OpenMethodExecutionParams) "jet.cpp":524
> Function enum JIT_Result Jitrino::Jet::Compiler::compile(void *,struct Method *,struct OpenMethodExecutionParams const &) "compiler.cpp":389
> Function void Jitrino::Jet::Compiler::comp_gen_code_bb(unsigned int) "compiler.cpp":817
> Function bool Jitrino::Jet::Compiler::comp_gen_insts(unsigned int,unsigned int,unsigned int) "compiler.cpp":1023
> Function void Jitrino::Jet::Compiler::handle_inst(void) "bcproc.cpp":67
> Function void Jitrino::Jet::Compiler::handle_ik_meth(struct Jitrino::Jet::JInst const &) "bcproc.cpp":425
> Function void Jitrino::Jet::CodeGen::gen_invoke(enum JavaByteCodes,struct Method *,class std::vector<enum Jitrino::Jet::jtype,class std::allocator<enum Jitrino::Jet::jtype> > const &,enum Jitrino::Jet::jtype) "cg_meth.cpp":760
> Function void Jitrino::Jet::CodeGen::gen_check_null(class Jitrino::Jet::Val &,bool) "cg.cpp":122
> 1st Access
> 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":275
> Function enum JIT_Result Jitrino::Jet::compile_with_params(void *,void *,struct Method *,struct OpenMethodExecutionParams) "jet.cpp":524
> Function enum JIT_Result Jitrino::Jet::Compiler::compile(void *,struct Method *,struct OpenMethodExecutionParams const &) "compiler.cpp":389
> Function void Jitrino::Jet::Compiler::comp_gen_code_bb(unsigned int) "compiler.cpp":817
> Function bool Jitrino::Jet::Compiler::comp_gen_insts(unsigned int,unsigned int,unsigned int) "compiler.cpp":1023
> Function void Jitrino::Jet::Compiler::handle_inst(void) "bcproc.cpp":67
> Function void Jitrino::Jet::Compiler::handle_ik_meth(struct Jitrino::Jet::JInst const &) "bcproc.cpp":425
> Function void Jitrino::Jet::CodeGen::gen_invoke(enum JavaByteCodes,struct Method *,class std::vector<enum Jitrino::Jet::jtype,class std::allocator<enum Jitrino::Jet::jtype> > const &,enum Jitrino::Jet::jtype) "cg_meth.cpp":760
> Function void Jitrino::Jet::CodeGen::gen_check_null(class Jitrino::Jet::Val &,bool) "cg.cpp":125
> 2nd Access
> 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":275
> Function enum JIT_Result Jitrino::Jet::compile_with_params(void *,void *,struct Method *,struct OpenMethodExecutionParams) "jet.cpp":524
> Function enum JIT_Result Jitrino::Jet::Compiler::compile(void *,struct Method *,struct OpenMethodExecutionParams const &) "compiler.cpp":389
> Function void Jitrino::Jet::Compiler::comp_gen_code_bb(unsigned int) "compiler.cpp":817
> Function bool Jitrino::Jet::Compiler::comp_gen_insts(unsigned int,unsigned int,unsigned int) "compiler.cpp":1023
> Function void Jitrino::Jet::Compiler::handle_inst(void) "bcproc.cpp":67
> Function void Jitrino::Jet::Compiler::handle_ik_meth(struct Jitrino::Jet::JInst const &) "bcproc.cpp":425
> Function void Jitrino::Jet::CodeGen::gen_invoke(enum JavaByteCodes,struct Method *,class std::vector<enum Jitrino::Jet::jtype,class std::allocator<enum Jitrino::Jet::jtype> > const &,enum Jitrino::Jet::jtype) "cg_meth.cpp":760
> Function void Jitrino::Jet::CodeGen::gen_check_null(class Jitrino::Jet::Val &,bool) "cg.cpp":125
> "" "121" "" " void CodeGen::gen_check_null(Val& obj, bool hw_ok)"
> "0x1893E0" "122" "" " {"
> "0x189416" "123" "" " assert(obj.jt() == jobj);"
> "0x189437" "124" "" " if (obj.has(VA_NZ)) {"
> "0x18944C" "125" "*" " STATS_INC(Stats::npesEliminated,1);"
> "0x189481" "126" "" " if (is_set(DBG_TRACE_CG)) {"
> "" "127" "" " dbg("";;>check.npe for %s - skipped\n"", "
> "0x189495" "128" "" " to_str(obj.as_opnd()).c_str());"
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