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From "Mikhail Fursov (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (HARMONY-4004) [drlvm][jit][tc]Race conditions at vm\jitrino\src\main\compilationcontext.cpp: 143
Date Mon, 16 Jul 2007 13:05:06 GMT

     [ https://issues.apache.org/jira/browse/HARMONY-4004?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mikhail Fursov reassigned HARMONY-4004:
---------------------------------------

    Assignee: Mikhail Fursov

> [drlvm][jit][tc]Race conditions at vm\jitrino\src\main\compilationcontext.cpp: 143
> ----------------------------------------------------------------------------------
>
>                 Key: HARMONY-4004
>                 URL: https://issues.apache.org/jira/browse/HARMONY-4004
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>            Reporter: Ilya Leviev
>            Assignee: Mikhail Fursov
>         Attachments: SourceViewScreenshot-1.jpg
>
>
> TC report on thread unsafe access that result in race condition that occur during concurrent
execution of current() function
> if it not affect correctness of execution I will mark it by special API for prevention
of further alarms on this race. 
> Write -> Write data-race	
> Memory write at "compilationcontext.cpp":143 conflicts with a prior memory write at "compilationcontext.cpp":143
> Stack Trace: 
> Context
> 	Function class VM_thread * get_thread_ptr_stub(void) "thread_manager.cpp":138
> 	Function void * compile_me(struct Method *) "compile.cpp":794
> 	Function compile_do_compilation "compile.cpp":774
> 	Function CompileMethod "em_intf.cpp":49
> 	Function enum JIT_Result DrlEMImpl::compileMethod(struct Method *) "drlemimpl.cpp":545
> 	Function vm_compile_method "c_interface.cpp":2572
> 	Function enum JIT_Result compile_do_compilation_jit(struct Method *,class JIT *) "compile.cpp":658
> 	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":263
> 	Function class Jitrino::LogStreams & Jitrino::LogStreams::current(class Jitrino::JITInstanceContext
*) "compilationcontext.cpp":130
> 1st Access
> 	Function class VM_thread * get_thread_ptr_stub(void) "thread_manager.cpp":138
> 	Function void * compile_me(struct Method *) "compile.cpp":794
> 	Function compile_do_compilation "compile.cpp":774
> 	Function CompileMethod "em_intf.cpp":49
> 	Function enum JIT_Result DrlEMImpl::compileMethod(struct Method *) "drlemimpl.cpp":545
> 	Function vm_compile_method "c_interface.cpp":2572
> 	Function enum JIT_Result compile_do_compilation_jit(struct Method *,class JIT *) "compile.cpp":658
> 	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":263
> 	Function class Jitrino::LogStreams & Jitrino::LogStreams::current(class Jitrino::JITInstanceContext
*) "compilationcontext.cpp":143
> 	"141"	""	"     if (sp == 0)"
> 	"142"	""	"     {   // new thread"
> 	"143"	"*"	"         ++thread_nb;"
> 	"144"	""	"         sp = new TlsLogStreams();"
> 	"145"	""	"         tlslogstreams.put(sp);"
> 	"146"	""	"     }"
> 2nd Access
> 	Function class VM_thread * get_thread_ptr_stub(void) "thread_manager.cpp":138
> 	Function void * compile_me(struct Method *) "compile.cpp":794
> 	Function compile_do_compilation "compile.cpp":774
> 	Function CompileMethod "em_intf.cpp":49
> 	Function enum JIT_Result DrlEMImpl::compileMethod(struct Method *) "drlemimpl.cpp":545
> 	Function vm_compile_method "c_interface.cpp":2572
> 	Function enum JIT_Result compile_do_compilation_jit(struct Method *,class JIT *) "compile.cpp":658
> 	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":263
> 	Function class Jitrino::LogStreams & Jitrino::LogStreams::current(class Jitrino::JITInstanceContext
*) "compilationcontext.cpp":143
> 	"141"	""	"     if (sp == 0)"
> 	"142"	""	"     {   // new thread"
> 	"143"	"*"	"         ++thread_nb;"
> 	"144"	""	"         sp = new TlsLogStreams();"
> 	"145"	""	"         tlslogstreams.put(sp);"
> 	"146"	""	"     }"
> See also Source View screenshot. 

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