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8003985: Support @Contended Annotation - JEP 142

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HotSpot changes to support @Contended annotation.

Reviewed-by: coleenp, kvn, jrose
This commit is contained in:
Aleksey Shipilev 2013-01-14 15:17:47 +01:00 • committed by Jesper Wilhelmsson
parent ae35dfeeec
commit 0614ed6542
11 changed files with 617 additions and 92 deletions
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7
hotspot/src/cpu/sparc/vm/vm_version_sparc.cpp
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@ -259,6 +259,10 @@ void VM_Version::initialize() {
if (!has_vis1()) // Drop to 0 if no VIS1 support
UseVIS = 0;
if (FLAG_IS_DEFAULT(ContendedPaddingWidth) &&
(cache_line_size > ContendedPaddingWidth))
ContendedPaddingWidth = cache_line_size;
#ifndef PRODUCT
if (PrintMiscellaneous && Verbose) {
tty->print("Allocation");
@ -286,6 +290,9 @@ void VM_Version::initialize() {
if (PrefetchFieldsAhead > 0) {
tty->print_cr("PrefetchFieldsAhead %d", PrefetchFieldsAhead);
}
if (ContendedPaddingWidth > 0) {
tty->print_cr("ContendedPaddingWidth %d", ContendedPaddingWidth);
}
}
#endif // PRODUCT
}