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comparison src/share/vm/gc_implementation/g1/g1BiasedArray.cpp @ 17760:5479cb006184

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8036860: Pad and cache-align the BiasedMappedArray Summary: Pad and cache-align BiasedMappedArray instances by default to avoid performance variability problems due to false sharing, as instances of this data structures are typically used for performance sensitive code. Reviewed-by: brutisso, stefank
author tschatzl
date Mon, 24 Mar 2014 15:31:00 +0100
parents a19bea467577
children 78bbf4d43a14
comparison
equal deleted inserted replaced
17759:bc22cbb8b45a 17760:5479cb006184
22 * 22 *
23 */ 23 */
24 24
25 #include "precompiled.hpp" 25 #include "precompiled.hpp"
26 #include "gc_implementation/g1/g1BiasedArray.hpp" 26 #include "gc_implementation/g1/g1BiasedArray.hpp"
27 #include "memory/padded.inline.hpp"
28
29 // Allocate a new array, generic version.
30 address G1BiasedMappedArrayBase::create_new_base_array(size_t length, size_t elem_size) {
31 assert(length > 0, "just checking");
32 assert(elem_size > 0, "just checking");
33 return PaddedPrimitiveArray<u_char, mtGC>::create_unfreeable(length * elem_size);
34 }
27 35
28 #ifndef PRODUCT 36 #ifndef PRODUCT
29 void G1BiasedMappedArrayBase::verify_index(idx_t index) const { 37 void G1BiasedMappedArrayBase::verify_index(idx_t index) const {
30 guarantee(_base != NULL, "Array not initialized"); 38 guarantee(_base != NULL, "Array not initialized");
31 guarantee(index < length(), err_msg("Index out of bounds index: "SIZE_FORMAT" length: "SIZE_FORMAT, index, length())); 39 guarantee(index < length(), err_msg("Index out of bounds index: "SIZE_FORMAT" length: "SIZE_FORMAT, index, length()));