You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@harmony.apache.org by "Ilya Leviev (JIRA)" <ji...@apache.org> on 2007/05/17 14:45:16 UTC
[jira] Updated: (HARMONY-3896) [drlvm][thread] Race condition at
thread_java_monitors.c":345 and thread_native_suspend.c":189
[ https://issues.apache.org/jira/browse/HARMONY-3896?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ilya Leviev updated HARMONY-3896:
---------------------------------
Attachment: Source_View_Screenshot-1.jpg
Source View screenshot added
> [drlvm][thread] Race condition at thread_java_monitors.c":345 and thread_native_suspend.c":189
> ----------------------------------------------------------------------------------------------
>
> Key: HARMONY-3896
> URL: https://issues.apache.org/jira/browse/HARMONY-3896
> Project: Harmony
> Issue Type: Bug
> Components: DRLVM
> Reporter: Ilya Leviev
> Attachments: Source_View_Screenshot-1.jpg
>
>
> [drlvm][thread] Race condition at thread_java_monitors.c":345 and thread_native_suspend.c":189
> TC report on thread unsafe access to "state" field that result in race condition that occur during concurrent execution of jthread_monitor_timed_wait 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_monitors.c":345
> Stack Trace:
> Context
> Function void vm_execute_java_method_array(struct _jmethodID *,union jvalue *,union jvalue *) "ini.cpp":60
> Function ExecuteMethod "em_intf.cpp":43
> Function void DrlEMImpl::executeMethod(struct _jmethodID *,union jvalue *,union jvalue *) "drlemimpl.cpp":509
> Function void JIT_execute_method_default(void *,struct _jmethodID *,union jvalue *,union jvalue *) "ini_ia32.cpp":199
> Function vm_invoke_native_array_stub "ini_ia32.cpp":76
> Function hythread_thin_monitor_exit "thread_native_thin_monitor.c":416
> 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 class VM_thread * get_thread_ptr_stub(void) "thread_manager.cpp":138
> Function m2n_free_local_handles "m2n_ia32.cpp":268
> Function hythread_self "hythread.h":465
> Function vm_get_gc_thread_local "c_interface.cpp":2334
> Function gc_alloc_fast "gc_for_vm.cpp":178
> Function hythread_self "hythread.h":465
> 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_wait "java_lang_vmthreadmanager.cpp":202
> Function jthread_monitor_timed_wait "thread_java_monitors.c":345
> function jthread_monitor_timed_wait "thread_java_monitors.c":345
> "343" "" " tm_native_thread->state &= ~TM_THREAD_STATE_WAITING_INDEFINITELY;"
> "344" "" " }"
> "345" "*" " tm_native_thread->state |= TM_THREAD_STATE_RUNNABLE;"
> "346" "" " "
> 2nd Access
> Function void vm_execute_java_method_array(struct _jmethodID *,union jvalue *,union jvalue *) "ini.cpp":60
> Function ExecuteMethod "em_intf.cpp":43
> Function void DrlEMImpl::executeMethod(struct _jmethodID *,union jvalue *,union jvalue *) "drlemimpl.cpp":509
> Function void JIT_execute_method_default(void *,struct _jmethodID *,union jvalue *,union jvalue *) "ini_ia32.cpp":199
> Function vm_invoke_native_array_stub "ini_ia32.cpp":76
> Function hythread_thin_monitor_exit "thread_native_thin_monitor.c":416
> 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
> 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;"
> If it not affect correctness of execution I will mark it by special API for prevention of further alarms on this race.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.