harmony-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Xiao-Feng Li (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (HARMONY-4175) [drlvm][gc_gen][tc] Race condition at "gc_thread.h":(97-147) at thread_local_alloc() and alloc_context_reset() functions
Date Fri, 15 Jun 2007 12:10:35 GMT

     [ https://issues.apache.org/jira/browse/HARMONY-4175?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Xiao-Feng Li reassigned HARMONY-4175:
-------------------------------------

    Assignee: Xiao-Feng Li

> [drlvm][gc_gen][tc] Race condition at "gc_thread.h":(97-147) at thread_local_alloc()
and alloc_context_reset() functions
> ------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-4175
>                 URL: https://issues.apache.org/jira/browse/HARMONY-4175
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>            Reporter: Ilya Leviev
>            Assignee: Xiao-Feng Li
>            Priority: Minor
>         Attachments: SourceViewScreenshot-1.jpg
>
>
> Race condition at "gc_thread.h":(97-147) at thread_local_alloc() and alloc_context_reset()
functions
> TC report on thread unsafe access that result in race condition that occur during concurrent
execution of thread_local_alloc() and alloc_context_reset() functions
> if it not affect correctness of execution I will mark it by special API for prevention
of further alarms on this race. 
> Write -> Read data-race	
> Memory read at "gc_thread.h":147 conflicts with a prior memory write at "gc_thread.h":97
> Stack Trace:
> 	
> Context
> 	Function void interpreter(struct StackFrame &) "interpreter.cpp":2931
> 	Function Opcode_INVOKESTATIC "interpreter.cpp":2104
> 	Function interpreterInvokeStatic "interpreter.cpp":3312
> 	Function void interpreterInvokeStaticNative(struct StackFrame &,struct StackFrame
&,struct Method *) "interp_native_ia32.cpp":358
> 	Function invokeJNI "interp_native_ia32.cpp":49
> 	Function Java_java_lang_VMMemoryManager_runGC "java_lang_vmmemorymanager.cpp":138
> 	Function gc_force_gc "gc_for_vm.cpp":138
> 	Function void gc_reclaim_heap(struct GC *,unsigned int) "gc_common.cpp":300
> 	Function void gc_reset_mutator_context(struct GC *) "mutator.cpp":102
> 	Function void alloc_context_reset(struct Allocator *) "gc_thread.h":142
> Definition
> 	Function hythread_create_with_group "thread_native_basic.c":136
> 	Function os_thread_create "os_thread.c":37
> 	Function _beginthreadex "threadex.c":145
> 	Function EntryPoint "dllcrt0.c":323
> 	Function threadstartex "threadex.c":241
> 	Function thread_start_proc "thread_native_basic.c":711
> 	Function wrapper_proc "thread_java_basic.c":82
> 	Function vm_attach "thread_generic.cpp":266
> 	Function gc_thread_init "gc_for_vm.cpp":152
> 	Function void mutator_initialize(struct GC *,void *) "mutator.cpp":30
> 1st Access
> 	Function Opcode_INVOKEVIRTUAL "interpreter.cpp":2060
> 	Function interpreterInvokeVirtual "interpreter.cpp":3509
> 	Function interpreterInvoke "interpreter.cpp":3427
> 	Function void interpreter(struct StackFrame &) "interpreter.cpp":2841
> 	Function Opcode_NEWARRAY "interpreter.cpp":1090
> 	Function void * vm_new_vector_primitive(struct Class *,int) "vm_arrays.cpp":138
> 	Function gc_alloc "mutator_alloc.cpp":79
> 	Function void * nos_alloc(unsigned int,struct Allocator *) "gen.cpp":274
> 	Function void * fspace_alloc(unsigned int,struct Allocator *) "fspace_alloc.cpp":55
> 	Function struct Partial_Reveal_Object * thread_local_alloc(unsigned int,struct Allocator
*) "gc_thread.h":97
> 	"96"	""	"   if (new_free <= ceiling){"
> 	"97"	"*"	"     allocator->free= (void*)new_free;"
> 	"98"	""	"     return (Partial_Reveal_Object*)free;"
> 2nd Access
> 	Function void interpreter(struct StackFrame &) "interpreter.cpp":2931
> 	Function Opcode_INVOKESTATIC "interpreter.cpp":2104
> 	Function interpreterInvokeStatic "interpreter.cpp":3312
> 	Function void interpreterInvokeStaticNative(struct StackFrame &,struct StackFrame
&,struct Method *) "interp_native_ia32.cpp":358
> 	Function invokeJNI "interp_native_ia32.cpp":49
> 	Function Java_java_lang_VMMemoryManager_runGC "java_lang_vmmemorymanager.cpp":138
> 	Function gc_force_gc "gc_for_vm.cpp":138
> 	Function void gc_reclaim_heap(struct GC *,unsigned int) "gc_common.cpp":300
> 	Function void gc_reset_mutator_context(struct GC *) "mutator.cpp":102
> 	Function void alloc_context_reset(struct Allocator *) "gc_thread.h":147
> 	"146"	""	"     assert(block->status == BLOCK_IN_USE);"
> 	"147"	"*"	"     block->free = allocator->free;"
> 	"148"	""	"     block->status = BLOCK_USED;"
> See also Source View screenshots. 

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message