Subversion Repositories HelenOS-historic

Compare Revisions

Ignore whitespace Rev 350 → Rev 351

/SPARTAN/trunk/src/lib/sort.c
33,6 → 33,20
 
#define EBUFSIZE 32
 
void _qsort(void * data, count_t n, size_t e_size, int (* cmp) (void * a, void * b), void *tmp, void *pivot);
void _bubblesort(void * data, count_t n, size_t e_size, int (* cmp) (void * a, void * b), void *slot);
 
/** Quicksort wrapper
*
* This is only a wrapper that takes care of memory allocations for storing
* the pivot and temporary elements for generic quicksort algorithm.
*
* @param data Pointer to data to be sorted.
* @param n Number of elements to be sorted.
* @param e_size Size of one element.
* @param cmp Comparator function.
*
*/
void qsort(void * data, count_t n, size_t e_size, int (* cmp) (void * a, void * b))
{
__u8 buf_tmp[EBUFSIZE];
49,6 → 63,28
}
}
 
_qsort(data, n, e_size, cmp, tmp, pivot);
if (e_size > EBUFSIZE) {
free(tmp);
free(pivot);
}
}
 
/** Quicksort
*
* Apply generic quicksort algorithm on supplied data, using pre-allocated buffers.
*
* @param data Pointer to data to be sorted.
* @param n Number of elements to be sorted.
* @param e_size Size of one element.
* @param cmp Comparator function.
* @param tmp Pointer to scratch memory buffer e_size bytes long.
* @param pivot Pointer to scratch memory buffer e_size bytes long.
*
*/
void _qsort(void * data, count_t n, size_t e_size, int (* cmp) (void * a, void * b), void *tmp, void *pivot)
{
if (n > 4) {
int i = 0, j = n - 1;
 
66,25 → 102,27
}
}
 
qsort(data, j + 1, e_size, cmp);
qsort(data + (j + 1) * e_size, n - j - 1, e_size, cmp);
_qsort(data, j + 1, e_size, cmp, tmp, pivot);
_qsort(data + (j + 1) * e_size, n - j - 1, e_size, cmp, tmp, pivot);
} else {
bubblesort(data, n, e_size, cmp);
_bubblesort(data, n, e_size, cmp, tmp);
}
 
if (e_size > EBUFSIZE) {
free(tmp);
free(pivot);
}
}
 
 
/** Bubblesort wrapper
*
* This is only a wrapper that takes care of memory allocation for storing
* the slot element for generic bubblesort algorithm.
*
* @param data Pointer to data to be sorted.
* @param n Number of elements to be sorted.
* @param e_size Size of one element.
* @param cmp Comparator function.
*
*/
void bubblesort(void * data, count_t n, size_t e_size, int (* cmp) (void * a, void * b))
{
__u8 buf_slot[EBUFSIZE];
bool done = false;
void * p;
void * slot = buf_slot;
if (e_size > EBUFSIZE) {
95,6 → 133,29
}
}
 
_bubblesort(data, n, e_size, cmp, slot);
if (e_size > EBUFSIZE) {
free(slot);
}
}
 
/** Bubblesort
*
* Apply generic bubblesort algorithm on supplied data, using pre-allocated buffer.
*
* @param data Pointer to data to be sorted.
* @param n Number of elements to be sorted.
* @param e_size Size of one element.
* @param cmp Comparator function.
* @param slot Pointer to scratch memory buffer e_size bytes long.
*
*/
void _bubblesort(void * data, count_t n, size_t e_size, int (* cmp) (void * a, void * b), void *slot)
{
bool done = false;
void * p;
 
while (!done) {
done = true;
for (p = data; p < data + e_size * (n - 1); p = p + e_size) {
106,10 → 167,7
}
}
}
if (e_size > EBUFSIZE) {
free(slot);
}
 
}
 
/*