DOMString not threadsafe

[Chong Hock Leong-A15994 <Ho...@motorola.com>]

Since I always face xerces 1.6 and 1.4 crash at when parsing a file (most in DOMStringHandle::operator new) and sometime in DOMString::transcode, I have modified the ThreadTest.cpp and make threaMain just run below function

void testDOMStr(char* str)

{

DOMString domStr(str);

char* out = domStr.transcode();

//std::cout << "out " << out << std::endl;

delete [] out;

}

 

The program can run up to few minutes and crash.

here's my core stacks

311 freeListPtr = *(void **)freeListPtr;

(/opt/SUNWspro/WS6/bin/sparcv9/dbx) where

current thread: t@4

=>[1] DOMStringHandle::operator new(sizeToAlloc = 12U), line 311 in "DOMString.cpp"

[2] DOMStringHandle::createNewStringHandle(bufLength = 12U), line 372 in "DOMString.cpp"

[3] DOMString::DOMString(0xfea0bce8, 0xffbef916, 0x0, 0xffbef916, 0xfefb3938, 0xfef81790), at 0xff166484

[4] testDOMStr(str = 0xffbef916 "testing5678"), line 763 in "ThreadTest.domStr.cpp"

[5] threadMain(param = 0xb00f8), line 810 in "ThreadTest.domStr.cpp"

 

 

Current function is DOMString::DOMString

513 if (!uniConverter->transcode(srcString, strData, charsNeeded))

(/opt/SUNWspro/bin/../WS6U2/bin/sparcv9/dbx) where

current thread: t@5

[1] 0x33000000(0x5b730, 0xffbef966, 0x58da8, 0x5, 0x81010100, 0xff00), at 0x32ffffff

=>[2] DOMString::DOMString(this = 0xfe909ce0, srcString = 0xffbef966 "Test1"), line 513 in "DOMString.cpp"

[3] testDOMStr(str = 0xffbef966 "Test1"), line 763 in "ThreadTest.domStr.cpp"

[4] threadMain(param = 0x61d24), line 810 in "ThreadTest.domStr.cpp"

cpp"

 

 

I tried both single processor and multi processor machine

Machine Type 1

SunOS 5.7 sun4u: Sun Microsystems sun4u Sun Ultra 80 UPA/PCI (4 X UltraSPARC-II 450MHz)

COmpiler 1

Sun WorkShop 6 update 2 C++ 5.3 2001/05/15

Machine Type 2

SunOS 5.7 sun4u: Sun Microsystems sun4u Sun Ultra 5/10 UPA/PCI (UltraSPARC-IIi 440MHz)

COmpiler 2

CC: WorkShop Compilers 5.0 98/12/15 C++ 5.0

This seems that DOMString is not thread safe (not only for not const function)

Regards, 
Hock Leong 

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