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Posted to commits@harmony.apache.org by "Ilya Leviev (JIRA)" <ji...@apache.org> on 2007/05/28 17:52:15 UTC
[jira] Updated: (HARMONY-3977) [drlvm][gc_gen] Known/proven race
conditions markup at "gc_for_vm.cpp":300 at gc_clear_mutator_block_flag
function
[ https://issues.apache.org/jira/browse/HARMONY-3977?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ilya Leviev updated HARMONY-3977:
---------------------------------
Summary: [drlvm][gc_gen] Known/proven race conditions markup at "gc_for_vm.cpp":300 at gc_clear_mutator_block_flag function (was: [drlvm][gc_gen] Race conditions at "gc_for_vm.cpp":300 at gc_clear_mutator_block_flag function)
> [drlvm][gc_gen] Known/proven race conditions markup at "gc_for_vm.cpp":300 at gc_clear_mutator_block_flag function
> ------------------------------------------------------------------------------------------------------------------
>
> Key: HARMONY-3977
> URL: https://issues.apache.org/jira/browse/HARMONY-3977
> Project: Harmony
> Issue Type: Bug
> Components: DRLVM
> Reporter: Ilya Leviev
> Assignee: Xiao-Feng Li
> Attachments: HARMONY-3977_add_markup.patch, SourceViewScreenshot-1.jpg
>
>
> TC report on thread unsafe access that result in race condition that occur during concurrent execution of gc_clear_mutator_block_flag 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 "gc_for_vm.cpp":300 conflicts with a prior memory write at "gc_for_vm.cpp":300
> Stack Trace:
> Context
> Function hythread_create "thread_native_basic.c":165
> 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 finalizer_thread_func "finalizer_thread.cpp":266
> Function void vm_heavy_finalizer_resume_mutator(void) "finalizer_thread.cpp":318
> Function gc_clear_mutator_block_flag "gc_for_vm.cpp":298
> 1st Access
> Function hythread_create "thread_native_basic.c":165
> 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 finalizer_thread_func "finalizer_thread.cpp":266
> Function void vm_heavy_finalizer_resume_mutator(void) "finalizer_thread.cpp":318
> Function gc_clear_mutator_block_flag "gc_for_vm.cpp":300
> "297" "" " Boolean gc_clear_mutator_block_flag()"
> "298" "" " {"
> "299" "" " Boolean old_flag = mutator_need_block;"
> "300" "*" " mutator_need_block = FALSE;"
> "301" "" " return old_flag;"
> 2nd Access
> Function hythread_create "thread_native_basic.c":165
> 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 finalizer_thread_func "finalizer_thread.cpp":266
> Function void vm_heavy_finalizer_resume_mutator(void) "finalizer_thread.cpp":318
> Function gc_clear_mutator_block_flag "gc_for_vm.cpp":300
> "297" "" " Boolean gc_clear_mutator_block_flag()"
> "298" "" " {"
> "299" "" " Boolean old_flag = mutator_need_block;"
> "300" "*" " mutator_need_block = FALSE;"
> "301" "" " return old_flag;"
> See also Source View screenshots.
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