29,13 → 29,51 |
#include <mm/heap.h> |
#include <memstr.h> |
#include <sort.h> |
#include <panic.h> |
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static void _qsort(void * data, count_t n, size_t e_size, int (* cmp) (void * a, void * b), void * pivot, void * tmp); |
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/* |
* Wrapper method for quicksort algorithm to decrease amount of allocations |
*/ |
void qsort(void * data, count_t n, size_t e_size, int (* cmp) (void * a, void * b)) { |
void * tmp = (void *) malloc(e_size); |
void * pivot = (void *) malloc(e_size); |
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if (!tmp || !pivot) { |
panic("qsort(): Cannot allocate memory\n"); |
} |
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_qsort(data, n, e_size, cmp, pivot, tmp); |
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free(tmp); |
free(pivot); |
} |
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void bubblesort(void * data, count_t n, size_t e_size, int (* cmp) (void * a, void * b)) { |
bool done = false; |
void * p; |
void * slot = (void *) malloc(e_size); |
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while (!done) { |
done = true; |
for (p = data; p < data + e_size * (n - 1); p = p + e_size) { |
if (cmp(p, p + e_size) == 1) { |
memcpy(slot, p, e_size); |
memcpy(p, p + e_size, e_size); |
memcpy(p + e_size, slot, e_size); |
done = false; |
} |
} |
} |
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free(slot); |
} |
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static void _qsort(void * data, count_t n, size_t e_size, int (* cmp) (void * a, void * b), void * pivot, void * tmp) { |
if (n > 4) { |
int i = 0, j = n - 1; |
void * tmp = (void *) malloc(e_size); |
void * pivot = (void *) malloc(e_size); |
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memcpy(pivot, data, e_size); |
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51,9 → 89,6 |
} |
} |
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free(tmp); |
free(pivot); |
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qsort(data, j + 1, e_size, cmp); |
qsort(data + (j + 1) * e_size, n - j - 1, e_size, cmp); |
} else { |
62,26 → 97,7 |
} |
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void bubblesort(void * data, count_t n, size_t e_size, int (* cmp) (void * a, void * b)) { |
bool done = false; |
void * p; |
void * slot = (void *) malloc(e_size); |
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while (!done) { |
done = true; |
for (p = data; p < data + e_size * (n - 1); p = p + e_size) { |
if (cmp(p, p + e_size) == 1) { |
memcpy(slot, p, e_size); |
memcpy(p, p + e_size, e_size); |
memcpy(p + e_size, slot, e_size); |
done = false; |
} |
} |
} |
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free(slot); |
} |
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/* |
* Comparator returns 1 if a > b, 0 if a == b, -1 if a < b |
*/ |