25 #include "precompiled.hpp" 26 #include "gc/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 } 35 36 #ifndef PRODUCT 37 void G1BiasedMappedArrayBase::verify_index(idx_t index) const { 38 guarantee(_base != NULL, "Array not initialized"); 39 guarantee(index < length(), "Index out of bounds index: " SIZE_FORMAT " length: " SIZE_FORMAT, index, length()); 40 } 41 42 void G1BiasedMappedArrayBase::verify_biased_index(idx_t biased_index) const { 43 guarantee(_biased_base != NULL, "Array not initialized"); 44 guarantee(biased_index >= bias() && biased_index < (bias() + length()), 45 "Biased index out of bounds, index: " SIZE_FORMAT " bias: " SIZE_FORMAT " length: " SIZE_FORMAT, biased_index, bias(), length()); 46 } 47 48 void G1BiasedMappedArrayBase::verify_biased_index_inclusive_end(idx_t biased_index) const { 49 guarantee(_biased_base != NULL, "Array not initialized"); 50 guarantee(biased_index >= bias() && biased_index <= (bias() + length()), 51 "Biased index out of inclusive bounds, index: " SIZE_FORMAT " bias: " SIZE_FORMAT " length: " SIZE_FORMAT, biased_index, bias(), length()); 52 } 53 54 class TestMappedArray : public G1BiasedMappedArray<int> { 55 protected: 56 virtual int default_value() const { return 0xBAADBABE; } 57 public: 58 static void test_biasedarray() { 59 const size_t REGION_SIZE_IN_WORDS = 512; 60 const size_t NUM_REGIONS = 20; 61 HeapWord* fake_heap = (HeapWord*)LP64_ONLY(0xBAAA00000) NOT_LP64(0xBA000000); // Any value that is non-zero 62 63 TestMappedArray array; 64 array.initialize(fake_heap, fake_heap + REGION_SIZE_IN_WORDS * NUM_REGIONS, 65 REGION_SIZE_IN_WORDS * HeapWordSize); 66 // Check address calculation (bounds) 67 assert(array.bottom_address_mapped() == fake_heap, 68 "bottom mapped address should be " PTR_FORMAT ", but is " PTR_FORMAT, p2i(fake_heap), p2i(array.bottom_address_mapped())); 69 assert(array.end_address_mapped() == (fake_heap + REGION_SIZE_IN_WORDS * NUM_REGIONS), "must be"); 70 71 int* bottom = array.address_mapped_to(fake_heap); | 25 #include "precompiled.hpp" 26 #include "gc/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 } 35 36 #ifndef PRODUCT 37 void G1BiasedMappedArrayBase::verify_index(idx_t index) const { 38 guarantee(_base != NULL, "Array not initialized"); 39 guarantee(index < length(), "Index out of bounds index: " SIZE_FORMAT " length: " SIZE_FORMAT, index, length()); 40 } 41 42 void G1BiasedMappedArrayBase::verify_biased_index(idx_t biased_index) const { 43 guarantee(_biased_base != NULL, "Array not initialized"); 44 guarantee(biased_index >= bias() && biased_index < (bias() + length()), 45 "Biased index out of bounds, index: " SIZE_FORMAT " bias: " SIZE_FORMAT " length: " SIZE_FORMAT, 46 biased_index, bias(), length()); 47 } 48 49 void G1BiasedMappedArrayBase::verify_biased_index_inclusive_end(idx_t biased_index) const { 50 guarantee(_biased_base != NULL, "Array not initialized"); 51 guarantee(biased_index >= bias() && biased_index <= (bias() + length()), 52 "Biased index out of inclusive bounds, index: " SIZE_FORMAT " bias: " SIZE_FORMAT " length: " SIZE_FORMAT, 53 biased_index, bias(), length()); 54 } 55 56 class TestMappedArray : public G1BiasedMappedArray<int> { 57 protected: 58 virtual int default_value() const { return 0xBAADBABE; } 59 public: 60 static void test_biasedarray() { 61 const size_t REGION_SIZE_IN_WORDS = 512; 62 const size_t NUM_REGIONS = 20; 63 HeapWord* fake_heap = (HeapWord*)LP64_ONLY(0xBAAA00000) NOT_LP64(0xBA000000); // Any value that is non-zero 64 65 TestMappedArray array; 66 array.initialize(fake_heap, fake_heap + REGION_SIZE_IN_WORDS * NUM_REGIONS, 67 REGION_SIZE_IN_WORDS * HeapWordSize); 68 // Check address calculation (bounds) 69 assert(array.bottom_address_mapped() == fake_heap, 70 "bottom mapped address should be " PTR_FORMAT ", but is " PTR_FORMAT, p2i(fake_heap), p2i(array.bottom_address_mapped())); 71 assert(array.end_address_mapped() == (fake_heap + REGION_SIZE_IN_WORDS * NUM_REGIONS), "must be"); 72 73 int* bottom = array.address_mapped_to(fake_heap); |