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6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb

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Added new product ObjectAlignmentInBytes flag to control object alignment.

Reviewed-by: twisti, ysr, iveresov
This commit is contained in:
Vladimir Kozlov 2010-05-27 18:01:56 -07:00
parent 05b4f2e796
commit cc18a50e59
29 changed files with 222 additions and 136 deletions
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12
hotspot/src/share/vm/utilities/globalDefinitions.cpp
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@ -34,6 +34,18 @@ int LogBitsPerHeapOop = 0;
int BytesPerHeapOop = 0;
int BitsPerHeapOop = 0;
// Object alignment, in units of HeapWords.
// Defaults are -1 so things will break badly if incorrectly initialized.
int MinObjAlignment = -1;
int MinObjAlignmentInBytes = -1;
int MinObjAlignmentInBytesMask = 0;
int LogMinObjAlignment = -1;
int LogMinObjAlignmentInBytes = -1;
// Oop encoding heap max
uint64_t OopEncodingHeapMax = 0;
void basic_fatal(const char* msg) {
fatal(msg);
}