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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 "Benchmark.h"
#include "SkRandom.h"
#include "SkString.h"
#include "SkTSort.h"
static const int N = 1000;
static void rand_proc(int array[N]) {
SkRandom rand;
for (int i = 0; i < N; ++i) {
array[i] = rand.nextS();
}
}
static void randN_proc(int array[N]) {
SkRandom rand;
int mod = N / 10;
for (int i = 0; i < N; ++i) {
array[i] = rand.nextU() % mod;
}
}
static void forward_proc(int array[N]) {
for (int i = 0; i < N; ++i) {
array[i] = i;
}
}
static void backward_proc(int array[N]) {
for (int i = 0; i < N; ++i) {
array[i] = -i;
}
}
static void same_proc(int array[N]) {
for (int i = 0; i < N; ++i) {
array[i] = N;
}
}
typedef void (*SortProc)(int array[N]);
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[N]) {
// End is inclusive for SkTQSort!
SkTQSort<int>(array, array + N - 1);
}
static void skheap_sort(int array[N]) {
SkTHeapSort<int>(array, N);
}
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[N]) {
qsort(array, N, 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 Benchmark {
SkString fName;
const Type fType;
const SortProc fSortProc;
SkAutoTMalloc<int> fUnsorted;
public:
SortBench(Type t, SortType s) : fType(t), fSortProc(gSorts[s].fProc) {
fName.printf("sort_%s_%s", gSorts[s].fName, gRec[t].fName);
}
virtual bool isSuitableFor(Backend backend) SK_OVERRIDE {
return backend == kNonRendering_Backend;
}
protected:
virtual const char* onGetName() SK_OVERRIDE {
return fName.c_str();
}
// Delayed initialization only done if onDraw will be called.
virtual void onPreDraw() SK_OVERRIDE {
fUnsorted.reset(N);
gRec[fType].fProc(fUnsorted.get());
}
virtual void onDraw(const int loops, SkCanvas*) SK_OVERRIDE {
SkAutoTMalloc<int> sorted(N);
for (int i = 0; i < loops; i++) {
memcpy(sorted.get(), fUnsorted.get(), N*sizeof(int));
fSortProc(sorted.get());
#ifdef SK_DEBUG
for (int j = 1; j < N; ++j) {
SkASSERT(sorted[j - 1] <= sorted[j]);
}
#endif
}
}
private:
typedef Benchmark INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
static Benchmark* NewSkQSort(Type t) {
return new SortBench(t, kSKQSort);
}
static Benchmark* NewSkHeap(Type t) {
return new SortBench(t, kSKHeap);
}
static Benchmark* NewQSort(Type t) {
return new SortBench(t, kQSort);
}
DEF_BENCH( return NewSkQSort(kRand); )
DEF_BENCH( return NewSkHeap(kRand); )
DEF_BENCH( return NewQSort(kRand); )
DEF_BENCH( return NewSkQSort(kRandN); )
DEF_BENCH( return NewSkHeap(kRandN); )
DEF_BENCH( return NewQSort(kRandN); )
DEF_BENCH( return NewSkQSort(kFore); )
DEF_BENCH( return NewSkHeap(kFore); )
DEF_BENCH( return NewQSort(kFore); )
DEF_BENCH( return NewSkQSort(kBack); )
DEF_BENCH( return NewSkHeap(kBack); )
DEF_BENCH( return NewQSort(kBack); )
DEF_BENCH( return NewSkQSort(kSame); )
DEF_BENCH( return NewSkHeap(kSame); )
DEF_BENCH( return NewQSort(kSame); )
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