Adwaith-Rajesh/gperf
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Some polishing.

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Bruno Haible
2002-11-12 13:03:02 +00:00
parent 08f819d0df
commit 5e5d12ca2d
3 changed files with 23 additions and 11 deletions
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2
ChangeLog
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@@ -1,5 +1,7 @@
2002-10-13 Bruno Haible <bruno@clisp.org> 2002-10-13 Bruno Haible <bruno@clisp.org>
* src/bool-array.*: Some polishing.
* src/options.h (Options::operator=, Options::operator!=): Remove * src/options.h (Options::operator=, Options::operator!=): Remove
unused methods. unused methods.
* src/options.icc (Options::operator=, Options::operator!=): Remove. * src/options.icc (Options::operator=, Options::operator!=): Remove.

17
src/bool-array.h
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@@ -32,11 +32,13 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
- set_bit will be called 300394 times. - set_bit will be called 300394 times.
With a conventional bit array implementation, clear would be too slow. With a conventional bit array implementation, clear would be too slow.
With a tree/hash based bit array implementation, set_bit would be slower. */ With a tree/hash based bit array implementation, set_bit would be slower. */
class Bool_Array class Bool_Array
{ {
public: public:
/* Initializes the bit array with room for s bits, numbered from 0 to s-1. */ /* Initializes the bit array with room for SIZE bits, numbered from
Bool_Array (unsigned int s); 0 to SIZE-1. */
Bool_Array (unsigned int size);
/* Frees this object. */ /* Frees this object. */
~Bool_Array (); ~Bool_Array ();
@@ -48,11 +50,16 @@ public:
int set_bit (unsigned int index); int set_bit (unsigned int index);
private: private:
unsigned int _size; /* Size of array. */ /* Size of array. */
unsigned int _iteration_number; /* Number of times clear() was called + 1. */ unsigned int const _size;
/* Current iteration number. Always nonzero. Starts out as 1, and is
incremented each time clear() is called. */
unsigned int _iteration_number;
/* For each index, we store in storage_array[index] the iteration_number at /* For each index, we store in storage_array[index] the iteration_number at
the time set_bit(index) was last called. */ the time set_bit(index) was last called. */
unsigned int *_storage_array; unsigned int * const _storage_array;
}; };
#ifdef __OPTIMIZE__ /* efficiency hack! */ #ifdef __OPTIMIZE__ /* efficiency hack! */

15
src/bool-array.icc
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@@ -24,15 +24,18 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
//#include <string.h> //#include <string.h>
//#include "options.h" //#include "options.h"
/* Initializes the bit array with room for s bits, numbered from 0 to s-1. */ /* Initializes the bit array with room for SIZE bits, numbered from
0 to SIZE-1. */
INLINE INLINE
Bool_Array::Bool_Array (unsigned int s) Bool_Array::Bool_Array (unsigned int size)
: _size (s), _iteration_number (1), _storage_array (new unsigned int [s]) : _size (size),
_iteration_number (1),
_storage_array (new unsigned int [size])
{ {
memset (_storage_array, 0, s * sizeof (unsigned int)); memset (_storage_array, 0, size * sizeof (_storage_array[0]));
if (option[DEBUG]) if (option[DEBUG])
fprintf (stderr, "\nbool array size = %d, total bytes = %d\n", fprintf (stderr, "\nbool array size = %d, total bytes = %d\n",
_size, (unsigned int) (_size * sizeof (*_storage_array))); _size, (unsigned int) (_size * sizeof (_storage_array[0])));
} }
/* Sets the specified bit to one. Returns its previous value (0 or 1). */ /* Sets the specified bit to one. Returns its previous value (0 or 1). */
@@ -61,7 +64,7 @@ Bool_Array::clear ()
if (++_iteration_number == 0) if (++_iteration_number == 0)
{ {
_iteration_number = 1; _iteration_number = 1;
memset (_storage_array, 0, _size * sizeof (unsigned int)); memset (_storage_array, 0, _size * sizeof (_storage_array[0]));
if (option[DEBUG]) if (option[DEBUG])
{ {
fprintf (stderr, "(re-initialized bool_array)\n"); fprintf (stderr, "(re-initialized bool_array)\n");