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From "Ilya Leviev (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-3945) [drlvm][util] Known/proven race conditions markup at "vm_strings.cpp":604
Date Wed, 23 May 2007 13:30:32 GMT
[drlvm][util] Known/proven race conditions markup at "vm_strings.cpp":604
-------------------------------------------------------------------------

                 Key: HARMONY-3945
                 URL: https://issues.apache.org/jira/browse/HARMONY-3945
             Project: Harmony
          Issue Type: Bug
          Components: DRLVM
            Reporter: Ilya Leviev



TC report on thread unsafe access that result in race condition that occur during concurrent
execution of vm_instantiate_cp_string_slow functions.

As issues related to vm statistic data collection in debug mode and it not affect correctness
of execution I mark it by special API for prevention of further alarms on this race.

Write -> Write data-race
Memory write at "vm_strings.cpp":604 conflicts with a prior memory write at "vm_strings.cpp":604


Stack Trace: 

Context
	Function int Jitrino::Jet::rt_h_dcmp_l(double,double) "arith_rt.cpp":110
	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_dcmp_l(double,double) "arith_rt.cpp":110
	Function vm_get_gc_thread_local "c_interface.cpp":2334
	Function gc_alloc_fast "gc_for_vm.cpp":178
	Function int Jitrino::Jet::rt_h_lcmp(__int64,__int64) "arith_rt.cpp":70
	Function class VM_thread * get_thread_ptr_stub(void) "thread_manager.cpp":138
	Function rth_ldc_ref_helper "jit_runtime_support.cpp":163
	Function struct ManagedObject * vm_instantiate_cp_string_slow(struct Class *,unsigned int)
"vm_strings.cpp":601

1st Access
	Function double Jitrino::Jet::rt_h_i64_2_dbl(__int64) "arith_rt.cpp":272
	Function double Jitrino::Jet::rt_h_flt_2_dbl(float) "arith_rt.cpp":294
	Function double Jitrino::Jet::rt_h_neg_dbl64(double) "arith_rt.cpp":49
	Function int Jitrino::Jet::rt_h_dcmp_l(double,double) "arith_rt.cpp":110
	Function int Jitrino::Jet::rt_h_lcmp(__int64,__int64) "arith_rt.cpp":70
	Function class VM_thread * get_thread_ptr_stub(void) "thread_manager.cpp":138
	Function hythread_self "hythread.h":465
	Function class VM_thread * get_thread_ptr_stub(void) "thread_manager.cpp":138
	Function rth_ldc_ref_helper "jit_runtime_support.cpp":163
	Function struct ManagedObject * vm_instantiate_cp_string_slow(struct Class *,unsigned int)
"vm_strings.cpp":604

	"600"	""	" vm_instantiate_cp_string_slow(Class* c, unsigned cp_index)"
	"601"	""	" {"
	"602"	""	"     ASSERT_THROW_AREA;"
	"603"	""	" #ifdef VM_STATS"
	"604"	"*"	"     VM_Statistics::get_vm_stats().num_instantiate_cp_string_slow++;"
	"605"	""	" #endif"
	"606"	""	" "
	"607"	""	"     Java_java_lang_String* result;"



2nd Access
	Function int Jitrino::Jet::rt_h_dcmp_l(double,double) "arith_rt.cpp":110
	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_dcmp_l(double,double) "arith_rt.cpp":110
	Function vm_get_gc_thread_local "c_interface.cpp":2334
	Function gc_alloc_fast "gc_for_vm.cpp":178
	Function int Jitrino::Jet::rt_h_lcmp(__int64,__int64) "arith_rt.cpp":70
	Function class VM_thread * get_thread_ptr_stub(void) "thread_manager.cpp":138
	Function rth_ldc_ref_helper "jit_runtime_support.cpp":163
	Function struct ManagedObject * vm_instantiate_cp_string_slow(struct Class *,unsigned int)
"vm_strings.cpp":604


	"600"	""	" vm_instantiate_cp_string_slow(Class* c, unsigned cp_index)"
	"601"	""	" {"
	"602"	""	"     ASSERT_THROW_AREA;"
	"603"	""	" #ifdef VM_STATS"
	"604"	"*"	"     VM_Statistics::get_vm_stats().num_instantiate_cp_string_slow++;"
	"605"	""	" #endif"
	"606"	""	" "
	"607"	""	"     Java_java_lang_String* result;"


See also Source View screenshots.



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