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Tweak a memory alignment unit test that doesn't (and should not be expected to) work on HP-UX.

This commit is contained in:
Brian Cox 2017-03-21 23:36:26 -07:00
parent 5275975d86
commit ea2170fd20
1 changed files with 9 additions and 0 deletions
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9
src/twtest/platform_t.cpp
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@ -85,6 +85,13 @@ void TestPlatform()
template<int ALIGN_SIZE> template<int ALIGN_SIZE>
AlignMe<ALIGN_SIZE>::AlignMe() AlignMe<ALIGN_SIZE>::AlignMe()
{ {
// HP-UX does not play your silly alignment games, at least unless you
// first invoke something called "allow_unaligned_data_access()", which
// apparently incurs a substantial perf penalty. Luckily we don't appear
// to have any need for that behavior, which begs the question of why
// this test exists in the first place.
// -bcox
#if (!IS_HPUX)
TCOUT << _T("Testing alignment of size ") << ALIGN_SIZE << std::endl; TCOUT << _T("Testing alignment of size ") << ALIGN_SIZE << std::endl;
// access a double in the byte array to see if it is aligned. if it isn't and the CPU // access a double in the byte array to see if it is aligned. if it isn't and the CPU
@ -101,6 +108,7 @@ AlignMe<ALIGN_SIZE>::AlignMe()
*pi = i; // access memory for write *pi = i; // access memory for write
TCOUT << _T("Write succeeded.") << std::endl; TCOUT << _T("Write succeeded.") << std::endl;
// this should choke if the CPU can't // this should choke if the CPU can't
// handle misaligned memory access // handle misaligned memory access
int64* pb = (int64*)&a[ALIGN_SIZE]; int64* pb = (int64*)&a[ALIGN_SIZE];
@ -111,6 +119,7 @@ AlignMe<ALIGN_SIZE>::AlignMe()
TCOUT << _T("Writing...") << std::endl; TCOUT << _T("Writing...") << std::endl;
*pb = I; // access memory for write *pb = I; // access memory for write
TCOUT << _T("Write succeeded.") << std::endl; TCOUT << _T("Write succeeded.") << std::endl;
#endif
TCOUT << _T("Alignment of ") << ALIGN_SIZE << _T(" ") << ( ALIGN_SIZE == 1 ? _T("byte") : _T("bytes") ) << _T(" is OK") << std::endl TCOUT << _T("Alignment of ") << ALIGN_SIZE << _T(" ") << ( ALIGN_SIZE == 1 ? _T("byte") : _T("bytes") ) << _T(" is OK") << std::endl
<< _T("=========================================\n"); << _T("=========================================\n");