< prev index next >

src/share/vm/memory/padded.inline.hpp

Print this page

        

*** 33,49 **** // Creates an aligned padded array. // The memory can't be deleted since the raw memory chunk is not returned. template <class T, MEMFLAGS flags, size_t alignment> PaddedEnd<T>* PaddedArray<T, flags, alignment>::create_unfreeable(uint length) { // Check that the PaddedEnd class works as intended. ! STATIC_ASSERT(is_size_aligned_(sizeof(PaddedEnd<T>), alignment)); // Allocate a chunk of memory large enough to allow for some alignment. void* chunk = AllocateHeap(length * sizeof(PaddedEnd<T, alignment>) + alignment, flags); // Make the initial alignment. ! PaddedEnd<T>* aligned_padded_array = (PaddedEnd<T>*)align_ptr_up(chunk, alignment); // Call the default constructor for each element. for (uint i = 0; i < length; i++) { ::new (&aligned_padded_array[i]) T(); } --- 33,49 ---- // Creates an aligned padded array. // The memory can't be deleted since the raw memory chunk is not returned. template <class T, MEMFLAGS flags, size_t alignment> PaddedEnd<T>* PaddedArray<T, flags, alignment>::create_unfreeable(uint length) { // Check that the PaddedEnd class works as intended. ! STATIC_ASSERT(is_aligned_(sizeof(PaddedEnd<T>), alignment)); // Allocate a chunk of memory large enough to allow for some alignment. void* chunk = AllocateHeap(length * sizeof(PaddedEnd<T, alignment>) + alignment, flags); // Make the initial alignment. ! PaddedEnd<T>* aligned_padded_array = (PaddedEnd<T>*)align_up(chunk, alignment); // Call the default constructor for each element. for (uint i = 0; i < length; i++) { ::new (&aligned_padded_array[i]) T(); }
*** 52,73 **** } template <class T, MEMFLAGS flags, size_t alignment> T** Padded2DArray<T, flags, alignment>::create_unfreeable(uint rows, uint columns, size_t* allocation_size) { // Calculate and align the size of the first dimension's table. ! size_t table_size = align_size_up_(rows * sizeof(T*), alignment); // The size of the separate rows. ! size_t row_size = align_size_up_(columns * sizeof(T), alignment); // Total size consists of the indirection table plus the rows. size_t total_size = table_size + rows * row_size + alignment; // Allocate a chunk of memory large enough to allow alignment of the chunk. void* chunk = AllocateHeap(total_size, flags); // Clear the allocated memory. memset(chunk, 0, total_size); // Align the chunk of memory. ! T** result = (T**)align_ptr_up(chunk, alignment); void* data_start = (void*)((uintptr_t)result + table_size); // Fill in the row table. for (size_t i = 0; i < rows; i++) { result[i] = (T*)((uintptr_t)data_start + i * row_size); --- 52,73 ---- } template <class T, MEMFLAGS flags, size_t alignment> T** Padded2DArray<T, flags, alignment>::create_unfreeable(uint rows, uint columns, size_t* allocation_size) { // Calculate and align the size of the first dimension's table. ! size_t table_size = align_up_(rows * sizeof(T*), alignment); // The size of the separate rows. ! size_t row_size = align_up_(columns * sizeof(T), alignment); // Total size consists of the indirection table plus the rows. size_t total_size = table_size + rows * row_size + alignment; // Allocate a chunk of memory large enough to allow alignment of the chunk. void* chunk = AllocateHeap(total_size, flags); // Clear the allocated memory. memset(chunk, 0, total_size); // Align the chunk of memory. ! T** result = (T**)align_up(chunk, alignment); void* data_start = (void*)((uintptr_t)result + table_size); // Fill in the row table. for (size_t i = 0; i < rows; i++) { result[i] = (T*)((uintptr_t)data_start + i * row_size);
*** 85,93 **** // Allocate a chunk of memory large enough to allow for some alignment. void* chunk = AllocateHeap(length * sizeof(T) + alignment, flags); memset(chunk, 0, length * sizeof(T) + alignment); ! return (T*)align_ptr_up(chunk, alignment); } #endif // SHARE_VM_MEMORY_PADDED_INLINE_HPP --- 85,93 ---- // Allocate a chunk of memory large enough to allow for some alignment. void* chunk = AllocateHeap(length * sizeof(T) + alignment, flags); memset(chunk, 0, length * sizeof(T) + alignment); ! return (T*)align_up(chunk, alignment); } #endif // SHARE_VM_MEMORY_PADDED_INLINE_HPP
< prev index next >