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From "Barak Simon" <barak.si...@db.com>
Subject v8plus Solaris instructions, asm code and atomic add
Date Tue, 17 Aug 2004 00:05:38 GMT
Hi,
We have experienced crashes on Solaris which we think are partly to do with the -xarch=v8plus
flag.
However, removing it is impossible (or is there a way?!) without disabling the assembly code
inside "thread.cpp". I have some questions on that:

1. Why was asm code used in the first place for atomic add instead of the solaris' InterlockedIncrement?
   I suspect this was due to some bug in some version or other of SunOS implementation with
conjunction of the v8 flags, but I'd
   be most grateful to hear more details, or whether there is a specific CC/Solaris patch
   that handles that.
2. Disabling the assembly code allows us to compile without the v8plus optimization flag (with
the downside of
not being thread-safe), and log4cxx seems to work fine with DOMConfigurator, but, alas, crashes
on PropertyConfigurator, this time
on the actual Solaris underlying __AtomicAdd32, when referencing stl strings (from within
std::basic_string)

Any ideas on how to proceed will be welcome, as I am running out of any very quickly...

Many thanks,
Barak

PS - For anyone with morbid interest, below are two stack traces, both from PropertyConfigurator
crash, the first one
when using the -xarch=v8plus flag, and the second when disabling the sparc_atomic_add_32 method
of thread.cpp file
and building without that flag:

Stack trace for ProperyConfigurator - with v8plus instructions
 =============================================

 (/opt/SUNWspro/bin/../WS6U2/bin/sparcv9/dbx) where
current thread: t@1
  [1] __AtomicAdd32(0xfed45be8, 0xffffffff, 0x0, 0x10000, 0xffff, 0xffff), at 0x8fa6c
  [2] __rwstd::__string_ref<char,std::char_traits<char>,std::allocator<char>
>::__unSafeRemoveReference(0xfed45bd0, 0xffbed6f4, 0x19, 0x0, 0x0, 0x1), at 0xfed70010
  [3] __rwstd::__string_ref<char,std::char_traits<char>,std::allocator<char>
>::__removeReference(0xfed45bd0, 0xffbed6f4, 0xffbed590, 0x294af0, 0x4, 0x0), at 0xfed6f27c
  [4] std::basic_string<char,std::char_traits<char>,std::allocator<char> >::__unLink(0xffbed704,
0xffbed604, 0x4, 0xffffffff, 0x15, 0xfffffffb), at 0xfed6cdf8
  [5] std::basic_string<char,std::char_traits<char>,std::allocator<char> >::~basic_string(0xffbed704,
0xffbed714, 0x294bc4, 0x0, 0x0, 0x0), at 0xfed6ba20
  [6] log4cxx::PropertyConfigurator::parseCategory(0xffbedee0, 0xffbede4c, 0xffbed800, 0xffbed830,
0xfee49980, 0xffbed82c), at 0xfed68c20
  [7] log4cxx::PropertyConfigurator::configureRootCategory(0xffbedee0, 0xffbede4c, 0x295124,
0x82ba8, 0x1, 0x0), at 0xfed67c48
=>[8] log4cxx::PropertyConfigurator::doConfigure(0xffbedee0, 0xffbede4c, 0x295124, 0x157cc0,
0x157cc0, 0x155ce8), at 0xfed675f8
  [9] log4cxx::PropertyConfigurator::doConfigure(0xffbedee0, 0x29611c, 0x295124, 0x0, 0x0,
0x0), at 0xfed66ee8
  [10] PropertyWatchdog::doOnChange(0x2960f0, 0xffbee3bc, 0xff1f0fd8, 0xff3e7fe8, 0x0, 0x2),
at 0xfed6dd44
  [11] log4cxx::helpers::FileWatchdog::checkAndConfigure(0x2960f0, 0xfee49ccc, 0xffbee750,
0xff3e7fe8, 0x0, 0x1), at 0xfecf54e4
  [12] log4cxx::helpers::FileWatchdog::start(0x2960f0, 0xea60, 0x13b88, 0xff3b2c10, 0xfeb6a08c,
0x78), at 0xfecf5608
  [13] log4cxx::PropertyConfigurator::configureAndWatch(0xffbee750, 0xea60, 0x0, 0x0, 0x0,
0x0), at 0xfed67350
  [14] log4cxx::PropertyConfigurator::configureAndWatch(0xffbee750, 0x0, 0xffbee8b4, 0x156530,
0x0, 0x1), at 0xfed672b4
  [15] gedcore::LogManager::configure(this = 0x160fa0), line 279 in "LogManager.cpp"
  [16] gedcore::LogManager::LogManager(this = 0x160fa0), line 156 in "LogManager.cpp"
  [17] gedcore::LogManager::instance(), line 180 in "LogManager.cpp"
  [18] gedcore::LogLoggingTest::getLogger(), line 56 in "LogLoggingTest.h"
  [19] gedcore::LogLoggingTest::test_debug(this = 0x162238), line 195 in "LogLoggingTest.cpp"
  [20] CppUnit::TestCaller<gedcore::LogLoggingTest>::runTest(this = 0x1614b8), line
166 in "TestCaller.h"
  [21] CppUnit::TestCaseMethodFunctor::operator()(0xffbeef40, 0xffbeecc0, 0x296020, 0xfe941ce4,
0x0, 0x0), at 0xfef0b384
  [22] CppUnit::DefaultProtector::protect(0x160f70, 0xffbeef40, 0xffbeeec0, 0xfffffff8, 0xffbeeb58,
0x295139), at 0xfeeef328
  [23] CppUnit::ProtectorChain::ProtectFunctor::operator()(0x162ea8, 0xffbeedec, 0xffbeef40,
0xffbeeec0, 0xfeb6a08c, 0x10), at 0xfef01f90
  [24] CppUnit::ProtectorChain::protect(0x294e28, 0xffbeef40, 0xffbeeec0, 0xffbeef3c, 0x64,
0x156558), at 0xfef00cf8
  [25] CppUnit::TestResult::protect(0xffbef4f8, 0xffbeef40, 0x1614b8, 0xffbeef3c, 0x0, 0x5),
at 0xfef1e710
  [26] CppUnit::TestCase::run(0x1614b8, 0xffbef4f8, 0xff1f0c68, 0xff3e7fe8, 0x0, 0x5), at
0xfef09ed8
  [27] CppUnit::TestComposite::doRunChildTests(0x162218, 0xffbef4f8, 0xff1f0c68, 0xff3e7fe8,
0x0, 0x1), at 0xfef0d2ec
  [28] CppUnit::TestComposite::run(0x162218, 0xffbef4f8, 0xff1f0c68, 0xff3e7fe8, 0x0, 0x1),
at 0xfef0d030
  [29] CppUnit::TestComposite::doRunChildTests(0x1621d8, 0xffbef4f8, 0x0, 0xff3e7fe8, 0x2db10,
0xff3c7890), at 0xfef0d2ec
  [30] CppUnit::TestComposite::run(0x1621d8, 0xffbef4f8, 0xffbef4f8, 0xff3e7fe8, 0x0, 0x1),
at 0xfef0d030
  [31] CppUnit::TestRunner::WrappingSuite::run(0x1621b8, 0xffbef4f8, 0xffbef46c, 0xff3e7fe8,
0x0, 0x5), at 0xfef22e78
  [32] CppUnit::TestResult::runTest(0xffbef4f8, 0x1621b8, 0xffbef46c, 0x25, 0x0, 0x156558),
at 0xfef1e3a8
  [33] CppUnit::TestRunner::run(0xffbef47c, 0xffbef4f8, 0xffbef46c, 0x218, 0xfeb6a748, 0x0),
at 0xfef232c8
  [34] main(argc = 1, argv = 0xffbef59c), line 26 in "test.cpp"

Stack trace for PropertyConfigurator - no v8plus version
==========================================

  [1] _lock_try_adaptive(0xfecec3b8, 0x2089c, 0x2969d8, 0xfea3c008, 0x2969d0, 0x0), at 0xfee2b258
  [2] _ti_pthread_mutex_lock(0xc7, 0xfee3c000, 0xfecec3b8, 0xfed1703c, 0xffbecd50, 0x0), at
0xfee1b798
=>[3] _RWSTDMutex::acquire(this = 0xfecec3b8), line 228 in "stdmutex.h"
  [4] _RWSTDGuard::_RWSTDGuard(this = 0xffbed2c0, m = CLASS), line 261 in "stdmutex.h"
  [5] __rwstd::__string_ref<char,std::char_traits<char>,std::allocator<char>
>::__removeReference(this = 0xfecec3b8), line 238 in "string_ref"
  [6] std::basic_string<char,std::char_traits<char>,std::allocator<char> >::__unLink(this
= 0xffbed4a4), line 863 in "string"
  [7] std::basic_string<char,std::char_traits<char>,std::allocator<char> >::~basic_string(this
= 0xffbed4a4), line 283 in "string"
  [8] log4cxx::PropertyConfigurator::parseCategory(this = 0xffbedc80, props = CLASS, logger
= CLASS, optionKey = CLASS, loggerName = CLASS, value = CLASS), line 317 in "propertyconfigurator.cpp"
  [9] log4cxx::PropertyConfigurator::configureRootCategory(this = 0xffbedc80, props = CLASS,
hierarchy = CLASS), line 213 in "propertyconfigurator.cpp"
  [10] log4cxx::PropertyConfigurator::doConfigure(this = 0xffbedc80, properties = CLASS, hierarchy
= CLASS), line 166 in "propertyconfigurator.cpp"
  [11] log4cxx::PropertyConfigurator::doConfigure(this = 0xffbedc80, configFileName = CLASS,
hierarchy = CLASS), line 119 in "propertyconfigurator.cpp"
  [12] PropertyWatchdog::doOnChange(this = 0x296478), line 55 in "propertyconfigurator.cpp"
  [13] log4cxx::helpers::FileWatchdog::checkAndConfigure(this = 0x296478), line 60 in "filewatchdog.cpp"
  [14] log4cxx::helpers::FileWatchdog::start(this = 0x296478), line 77 in "filewatchdog.cpp"
  [15] log4cxx::PropertyConfigurator::configureAndWatch(configFilename = CLASS, delay = 60000),
line 143 in "propertyconfigurator.cpp"
  [16] log4cxx::PropertyConfigurator::configureAndWatch(configFilename = CLASS), line 134
in "propertyconfigurator.cpp"
  [17] gedcore::LogManager::configure(this = 0x160fa8), line 279 in "LogManager.cpp"
  [18] gedcore::LogManager::LogManager(this = 0x160fa8), line 156 in "LogManager.cpp"
  [19] gedcore::LogManager::instance(), line 180 in "LogManager.cpp"
  [20] gedcore::LogLoggingTest::getLogger(), line 56 in "LogLoggingTest.h"
  [21] gedcore::LogLoggingTest::test_debug(this = 0x162240), line 195 in "LogLoggingTest.cpp"
  [22] CppUnit::TestCaller<gedcore::LogLoggingTest>::runTest(this = 0x1614c0), line
166 in "TestCaller.h"
dbx: warning: can't find file "/home/zhansha/cppunit-1.10.2/src/cppunit/.libs/TestCase.o"
dbx: warning: see `help finding-files'
  [23] CppUnit::TestCaseMethodFunctor::operator()(0xffbeece8, 0xffbeea68, 0x2963c8, 0xfe9c1ce4,
0x0, 0x0), at 0xfef0b384
dbx: warning: can't find file "/home/zhansha/cppunit-1.10.2/src/cppunit/.libs/DefaultProtector.o"
  [24] CppUnit::DefaultProtector::protect(0x160f78, 0xffbeece8, 0xffbeec68, 0xfffffff8, 0xffbee900,
0x295559), at 0xfeeef328
dbx: warning: can't find file "/home/zhansha/cppunit-1.10.2/src/cppunit/.libs/ProtectorChain.o"
  [25] CppUnit::ProtectorChain::ProtectFunctor::operator()(0x162ec8, 0xffbeeb94, 0xffbeece8,
0xffbeec68, 0xfee6a08c, 0x10), at 0xfef01f90
  [26] CppUnit::ProtectorChain::protect(0x2951b0, 0xffbeece8, 0xffbeec68, 0xffbeece4, 0x64,
0x156570), at 0xfef00cf8
dbx: warning: can't find file "/home/zhansha/cppunit-1.10.2/src/cppunit/.libs/TestResult.o"
  [27] CppUnit::TestResult::protect(0xffbef2a0, 0xffbeece8, 0x1614c0, 0xffbeece4, 0x0, 0x5),
at 0xfef1e710
  [28] CppUnit::TestCase::run(0x1614c0, 0xffbef2a0, 0xff320b24, 0xff3e7fe8, 0x0, 0x5), at
0xfef09ed8
dbx: warning: can't find file "/home/zhansha/cppunit-1.10.2/src/cppunit/.libs/TestComposite.o"
  [29] CppUnit::TestComposite::doRunChildTests(0x162220, 0xffbef2a0, 0xff320b24, 0xff3e7fe8,
0x0, 0x1), at 0xfef0d2ec
  [30] CppUnit::TestComposite::run(0x162220, 0xffbef2a0, 0xff320b24, 0xff3e7fe8, 0x0, 0x1),
at 0xfef0d030
  [31] CppUnit::TestComposite::doRunChildTests(0x1621e0, 0xffbef2a0, 0x0, 0xff3e7fe8, 0x2db10,
0xff3c7890), at 0xfef0d2ec
  [32] CppUnit::TestComposite::run(0x1621e0, 0xffbef2a0, 0xffbef2a0, 0xff3e7fe8, 0x0, 0x1),
at 0xfef0d030
dbx: warning: can't find file "/home/zhansha/cppunit-1.10.2/src/cppunit/.libs/TestRunner.o"
  [33] CppUnit::TestRunner::WrappingSuite::run(0x1621c0, 0xffbef2a0, 0xffbef214, 0x0, 0x0,
0x0), at 0xfef22e78
  [34] CppUnit::TestResult::runTest(0xffbef2a0, 0x1621c0, 0xffbef214, 0x25, 0x0, 0x156570),
at 0xfef1e3a8
  [35] CppUnit::TestRunner::run(0xffbef224, 0xffbef2a0, 0xffbef214, 0x0, 0x0, 0x0), at 0xfef232c8
  [36] main(argc = 1, argv = 0xffbef344), line 26 in "test.cpp"

________________________
Barak Simon
GED IT Core Platform
190 George St. Sydney, 2000
Deutsche Bank
Phone +61 2 925 85070
Fax      +61 2 925 95050


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