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/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkBenchmark.h"
#include "SkRandom.h"
#include "SkTSort.h"
#include "SkString.h"
static const int N = 1000;
static void rand_proc(int array[], int count) {
SkRandom rand;
for (int i = 0; i < count; ++i) {
array[i] = rand.nextS();
}
}
static void randN_proc(int array[], int count) {
SkRandom rand;
int mod = N / 10;
for (int i = 0; i < count; ++i) {
array[i] = rand.nextU() % mod;
}
}
static void forward_proc(int array[], int count) {
for (int i = 0; i < count; ++i) {
array[i] = i;
}
}
static void backward_proc(int array[], int count) {
for (int i = 0; i < count; ++i) {
array[i] = -i;
}
}
static void same_proc(int array[], int count) {
for (int i = 0; i < count; ++i) {
array[i] = count;
}
}
typedef void (*SortProc)(int array[], int count);
enum Type {
kRand, kRandN, kFore, kBack, kSame
};
static const struct {
const char* fName;
SortProc fProc;
} gRec[] = {
{ "rand", rand_proc },
{ "rand10", randN_proc },
{ "forward", forward_proc },
{ "backward", backward_proc },
{ "repeated", same_proc },
};
static void skqsort_sort(int array[], int count) {
SkTQSort<int>(array, array + count);
}
static void skheap_sort(int array[], int count) {
SkTHeapSort<int>(array, count);
}
extern "C" {
static int int_compare(const void* a, const void* b) {
const int ai = *(const int*)a;
const int bi = *(const int*)b;
return ai < bi ? -1 : (ai > bi);
}
}
static void qsort_sort(int array[], int count) {
qsort(array, count, sizeof(int), int_compare);
}
enum SortType {
kSKQSort, kSKHeap, kQSort
};
static const struct {
const char* fName;
SortProc fProc;
} gSorts[] = {
{ "skqsort", skqsort_sort },
{ "skheap", skheap_sort },
{ "qsort", qsort_sort },
};
class SortBench : public SkBenchmark {
SkString fName;
enum { MAX = 100000 };
int fUnsorted[MAX];
int fSorted[MAX];
int fCount;
SortProc fSortProc;
public:
SortBench(void* param, Type t, int n, SortType s) : INHERITED(param) {
if (n > MAX) {
n = MAX;
}
fName.printf("sort_%s_%s", gSorts[s].fName, gRec[t].fName);
fCount = n;
gRec[t].fProc(fUnsorted, n);
fSortProc = gSorts[s].fProc;
fIsRendering = false;
}
protected:
virtual const char* onGetName() SK_OVERRIDE {
return fName.c_str();
}
virtual void onDraw(SkCanvas* canvas) {
int n = SkBENCHLOOP(200);
for (int i = 0; i < n; i++) {
memcpy(fSorted, fUnsorted, fCount * sizeof(int));
fSortProc(fSorted, fCount);
#ifdef SK_DEBUG
for (int j = 1; j < fCount; ++j) {
SkASSERT(fSorted[j - 1] <= fSorted[j]);
}
#endif
}
}
private:
typedef SkBenchmark INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
static SkBenchmark* NewSkQSort(void* param, Type t) {
return new SortBench(param, t, N, kSKQSort);
}
static SkBenchmark* NewSkHeap(void* param, Type t) {
return new SortBench(param, t, N, kSKHeap);
}
static SkBenchmark* NewQSort(void* param, Type t) {
return new SortBench(param, t, N, kQSort);
}
DEF_BENCH( return NewSkQSort(p, kRand); )
DEF_BENCH( return NewSkHeap(p, kRand); )
DEF_BENCH( return NewQSort(p, kRand); )
DEF_BENCH( return NewSkQSort(p, kRandN); )
DEF_BENCH( return NewSkHeap(p, kRandN); )
DEF_BENCH( return NewQSort(p, kRandN); )
DEF_BENCH( return NewSkQSort(p, kFore); )
DEF_BENCH( return NewSkHeap(p, kFore); )
DEF_BENCH( return NewQSort(p, kFore); )
DEF_BENCH( return NewSkQSort(p, kBack); )
DEF_BENCH( return NewSkHeap(p, kBack); )
DEF_BENCH( return NewQSort(p, kBack); )
DEF_BENCH( return NewSkQSort(p, kSame); )
DEF_BENCH( return NewSkHeap(p, kSame); )
DEF_BENCH( return NewQSort(p, kSame); )
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