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Posted to commits@harmony.apache.org by "Ilya Leviev (JIRA)" <ji...@apache.org> on 2007/05/17 14:59:16 UTC
[jira] Updated: (HARMONY-3897) [drlvm][thread] Race condition at
thread_java_basic.c:531 and thread_native_suspend.c":189
[ https://issues.apache.org/jira/browse/HARMONY-3897?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ilya Leviev updated HARMONY-3897:
---------------------------------
Attachment: SourceViewScreenshot-1.jpg
Source View screenshot added
> [drlvm][thread] Race condition at thread_java_basic.c:531 and thread_native_suspend.c":189
> ------------------------------------------------------------------------------------------
>
> Key: HARMONY-3897
> URL: https://issues.apache.org/jira/browse/HARMONY-3897
> Project: Harmony
> Issue Type: Bug
> Components: DRLVM
> Reporter: Ilya Leviev
> Attachments: SourceViewScreenshot-1.jpg
>
>
> TC report on thread unsafe access to "state" field that result in race condition that occur during concurrent execution of jthread_sleep and wait_safe_region_event functions.
> Write -> Write data-race
> Memory write at "thread_native_suspend.c":189 conflicts with a prior memory write at "thread_java_basic.c":531
> Stack Trace:
> Context
> Function vm_get_gc_thread_local "c_interface.cpp":2334
> Function gc_alloc_fast "gc_for_vm.cpp":178
> Function vm_get_gc_thread_local "c_interface.cpp":2334
> Function gc_alloc_fast "gc_for_vm.cpp":178
> Function rth_get_interface_vtable "jit_runtime_support.cpp":651
> Function rth_update_checkcast_stats "jit_runtime_support.cpp":377
> Function hythread_thin_monitor_try_enter "thread_native_thin_monitor.c":323
> Function unreserve_lock "thread_native_thin_monitor.c":162
> Function hythread_suspend_other "thread_native_suspend.c":255
> Function wait_safe_region_event "thread_native_suspend.c":169
> 1st Access
> Function __int64 Jitrino::Jet::rt_h_i64_a(__int64,__int64,enum JavaByteCodes) "arith_rt.cpp":218
> Function class VM_thread * get_thread_ptr_stub(void) "thread_manager.cpp":138
> Function m2n_free_local_handles "m2n_ia32.cpp":268
> Function class VM_thread * get_thread_ptr_stub(void) "thread_manager.cpp":138
> Function m2n_free_local_handles "m2n_ia32.cpp":268
> Function int Jitrino::Jet::rt_h_lcmp(__int64,__int64) "arith_rt.cpp":69
> Function class VM_thread * get_thread_ptr_stub(void) "thread_manager.cpp":138
> Function hythread_suspend_enable "hythread_ext.h":370
> Function Java_java_lang_VMThreadManager_sleep "java_lang_vmthreadmanager.cpp":140
> Function jthread_sleep "thread_java_basic.c":531
> "530" "" " "
> "531" "*" " tm_native_thread->state |= TM_THREAD_STATE_RUNNABLE;"
> "532" "" " return status;"
> 2nd Access
> Function vm_get_gc_thread_local "c_interface.cpp":2334
> Function gc_alloc_fast "gc_for_vm.cpp":178
> Function vm_get_gc_thread_local "c_interface.cpp":2334
> Function gc_alloc_fast "gc_for_vm.cpp":178
> Function rth_get_interface_vtable "jit_runtime_support.cpp":651
> Function rth_update_checkcast_stats "jit_runtime_support.cpp":377
> Function hythread_thin_monitor_try_enter "thread_native_thin_monitor.c":323
> Function unreserve_lock "thread_native_thin_monitor.c":162
> Function hythread_suspend_other "thread_native_suspend.c":255
> Function wait_safe_region_event "thread_native_suspend.c":189
> "187" "" " thread, thread->suspend_count, thread->request));"
> "188" "" " hymutex_lock(&thread->mutex);"
> "189" "*" " thread->state |= TM_THREAD_STATE_SUSPENDED;"
> "190" "" " hymutex_unlock(&thread->mutex);"
> "191" "" " return TM_ERROR_NONE;"
> See also Source View screenshot.
> If it not affect correctness of execution I will mark it by special API for prevention of further alarms on this race.
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