517 ((_base == NULL) || // No previous try succeeded. |
517 ((_base == NULL) || // No previous try succeeded. |
518 (_base + size > zerobased_max))) { // Unscaled delivered an arbitrary address. |
518 (_base + size > zerobased_max))) { // Unscaled delivered an arbitrary address. |
519 |
519 |
520 // Calc address range within we try to attach (range of possible start addresses). |
520 // Calc address range within we try to attach (range of possible start addresses). |
521 char *const highest_start = (char *)align_ptr_down(zerobased_max - size, attach_point_alignment); |
521 char *const highest_start = (char *)align_ptr_down(zerobased_max - size, attach_point_alignment); |
522 // SS10 and SS12u1 cannot compile "(char *)UnscaledOopHeapMax - size" on solaris sparc 32-bit: |
522 // Need to be careful about size being guaranteed to be less |
523 // "Cannot use int to initialize char*." Introduce aux variable. |
523 // than UnscaledOopHeapMax due to type constraints. |
524 char *unscaled_end = (char *)UnscaledOopHeapMax; |
524 char *lowest_start = aligned_heap_base_min_address; |
525 unscaled_end -= size; |
525 uint64_t unscaled_end = UnscaledOopHeapMax - size; |
526 char *lowest_start = (size < UnscaledOopHeapMax) ? |
526 if (unscaled_end < UnscaledOopHeapMax) { // unscaled_end wrapped if size is large |
527 MAX2(unscaled_end, aligned_heap_base_min_address) : aligned_heap_base_min_address; |
527 lowest_start = MAX2(lowest_start, (char*)unscaled_end); |
|
528 } |
528 lowest_start = (char *)align_ptr_up(lowest_start, attach_point_alignment); |
529 lowest_start = (char *)align_ptr_up(lowest_start, attach_point_alignment); |
529 try_reserve_range(highest_start, lowest_start, attach_point_alignment, |
530 try_reserve_range(highest_start, lowest_start, attach_point_alignment, |
530 aligned_heap_base_min_address, zerobased_max, size, alignment, large); |
531 aligned_heap_base_min_address, zerobased_max, size, alignment, large); |
531 } |
532 } |
532 |
533 |