Mercurial > hg > CbC > CbC_gcc
comparison gcc/ada/libgnat/a-strunb.adb @ 131:84e7813d76e9
gcc-8.2
| author | mir3636 |
|---|---|
| date | Thu, 25 Oct 2018 07:37:49 +0900 |
| parents | 04ced10e8804 |
| children | 1830386684a0 |
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| 111:04ced10e8804 | 131:84e7813d76e9 |
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| 4 -- -- | 4 -- -- |
| 5 -- A D A . S T R I N G S . U N B O U N D E D -- | 5 -- A D A . S T R I N G S . U N B O U N D E D -- |
| 6 -- -- | 6 -- -- |
| 7 -- B o d y -- | 7 -- B o d y -- |
| 8 -- -- | 8 -- -- |
| 9 -- Copyright (C) 1992-2017, Free Software Foundation, Inc. -- | 9 -- Copyright (C) 1992-2018, Free Software Foundation, Inc. -- |
| 10 -- -- | 10 -- -- |
| 11 -- GNAT is free software; you can redistribute it and/or modify it under -- | 11 -- GNAT is free software; you can redistribute it and/or modify it under -- |
| 12 -- terms of the GNU General Public License as published by the Free Soft- -- | 12 -- terms of the GNU General Public License as published by the Free Soft- -- |
| 13 -- ware Foundation; either version 3, or (at your option) any later ver- -- | 13 -- ware Foundation; either version 3, or (at your option) any later ver- -- |
| 14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- | 14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- |
| 761 | 761 |
| 762 procedure Realloc_For_Chunk | 762 procedure Realloc_For_Chunk |
| 763 (Source : in out Unbounded_String; | 763 (Source : in out Unbounded_String; |
| 764 Chunk_Size : Natural) | 764 Chunk_Size : Natural) |
| 765 is | 765 is |
| 766 Growth_Factor : constant := 32; | 766 Growth_Factor : constant := 2; |
| 767 -- The growth factor controls how much extra space is allocated when | 767 -- The growth factor controls how much extra space is allocated when |
| 768 -- we have to increase the size of an allocated unbounded string. By | 768 -- we have to increase the size of an allocated unbounded string. By |
| 769 -- allocating extra space, we avoid the need to reallocate on every | 769 -- allocating extra space, we avoid the need to reallocate on every |
| 770 -- append, particularly important when a string is built up by repeated | 770 -- append, particularly important when a string is built up by repeated |
| 771 -- append operations of small pieces. This is expressed as a factor so | 771 -- append operations of small pieces. This is expressed as a factor so |
| 772 -- 32 means add 1/32 of the length of the string as growth space. | 772 -- 2 means add 1/2 of the length of the string as growth space. |
| 773 | 773 |
| 774 Min_Mul_Alloc : constant := Standard'Maximum_Alignment; | 774 Min_Mul_Alloc : constant := Standard'Maximum_Alignment; |
| 775 -- Allocation will be done by a multiple of Min_Mul_Alloc This causes | 775 -- Allocation will be done by a multiple of Min_Mul_Alloc This causes |
| 776 -- no memory loss as most (all?) malloc implementations are obliged to | 776 -- no memory loss as most (all?) malloc implementations are obliged to |
| 777 -- align the returned memory on the maximum alignment as malloc does not | 777 -- align the returned memory on the maximum alignment as malloc does not |