Return-Path: Delivered-To: apmail-harmony-commits-archive@www.apache.org Received: (qmail 2366 invoked from network); 14 Jun 2007 13:14:48 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 14 Jun 2007 13:14:48 -0000 Received: (qmail 20763 invoked by uid 500); 14 Jun 2007 13:14:51 -0000 Delivered-To: apmail-harmony-commits-archive@harmony.apache.org Received: (qmail 20739 invoked by uid 500); 14 Jun 2007 13:14:51 -0000 Mailing-List: contact commits-help@harmony.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@harmony.apache.org Delivered-To: mailing list commits@harmony.apache.org Received: (qmail 20723 invoked by uid 99); 14 Jun 2007 13:14:51 -0000 Received: from herse.apache.org (HELO herse.apache.org) (140.211.11.133) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 14 Jun 2007 06:14:50 -0700 X-ASF-Spam-Status: No, hits=-100.0 required=10.0 tests=ALL_TRUSTED X-Spam-Check-By: apache.org Received: from [140.211.11.4] (HELO brutus.apache.org) (140.211.11.4) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 14 Jun 2007 06:14:46 -0700 Received: from brutus (localhost [127.0.0.1]) by brutus.apache.org (Postfix) with ESMTP id 9FFF77140D2 for ; Thu, 14 Jun 2007 06:14:26 -0700 (PDT) Message-ID: <809699.1181826866652.JavaMail.jira@brutus> Date: Thu, 14 Jun 2007 06:14:26 -0700 (PDT) From: "Ilya Leviev (JIRA)" To: commits@harmony.apache.org Subject: [jira] Created: (HARMONY-4165) [drlvm][gc_gen][tc] Race condition at "gc_thread.h":(136-149) at allocator_init_free_block() and alloc_context_reset() functions MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Virus-Checked: Checked by ClamAV on apache.org [drlvm][gc_gen][tc] Race condition at "gc_thread.h":(136-149) at allocator_init_free_block() and alloc_context_reset() functions -------------------------------------------------------------------------------------------------------------------------------- Key: HARMONY-4165 URL: https://issues.apache.org/jira/browse/HARMONY-4165 Project: Harmony Issue Type: Bug Components: DRLVM Reporter: Ilya Leviev Attachments: SourceViewScreenshot-1.jpg Race condition at "gc_thread.h":(136-149) at allocator_init_free_block() and alloc_context_reset() functions TC report on thread unsafe access that result in race condition that occur during concurrent execution of allocator_init_free_block() 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 -> Write data-race Memory write at "gc_thread.h":149 conflicts with a prior memory write at "gc_thread.h":136 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 void interpreter(struct StackFrame &) "interpreter.cpp":2844 Function Opcode_NEW "interpreter.cpp":1254 Function struct ManagedObject * class_alloc_new_object(struct Class *) "jit_runtime_support.cpp":2589 Function struct ManagedObject * Class::allocate_instance(void) "class.cpp":478 Function void * vm_alloc_and_report_ti(unsigned int,unsigned int,void *,struct Class *) "jvmti_event.cpp":1359 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":61 Function fspace_alloc_block "fspace_alloc.cpp":40 Function void allocator_init_free_block(struct Allocator *,struct Block_Header *) "gc_thread.h":136 "133" "" " #endif /* #ifndef ALLOC_ZEROING */" "134" "" " " "135" "" " allocator->end = alloc_block->ceiling;" "136" "*" " allocator->alloc_block = (Block*)alloc_block; " "137" "" " " "138" "" " return;" 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":149 "147" "" " block->free = allocator->free;" "148" "" " block->status = BLOCK_USED;" "149" "*" " allocator->alloc_block = NULL;" "150" "" " }" 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.