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8056183: os::is_MP() always reports true when NMT is enabled

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Reviewed-by: shade, coleenp, bdelsart
This commit is contained in:
David Holmes 2014-09-10 00:44:16 -04:00
parent 425a00d039
commit eb8950df45
1 changed files with 8 additions and 7 deletions
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15
hotspot/src/share/vm/runtime/os.hpp
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@ -214,13 +214,14 @@ class os: AllStatic {
// Interface for detecting multiprocessor system
static inline bool is_MP() {
#if !INCLUDE_NMT
assert(_processor_count > 0, "invalid processor count");
return _processor_count > 1 || AssumeMP;
#else
// NMT needs atomic operations before this initialization.
return true;
#endif
// During bootstrap if _processor_count is not yet initialized
// we claim to be MP as that is safest. If any platform has a
// stub generator that might be triggered in this phase and for
// which being declared MP when in fact not, is a problem - then
// the bootstrap routine for the stub generator needs to check
// the processor count directly and leave the bootstrap routine
// in place until called after initialization has ocurred.
return (_processor_count != 1) || AssumeMP;
}
static julong available_memory();
static julong physical_memory();