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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
// This tests a Gr class
#if SK_SUPPORT_GPU
#include "GrMemoryPool.h"
#include "SkBenchmark.h"
#include "SkRandom.h"
#include "SkTScopedPtr.h"
#include "SkTDArray.h"
// change this to 0 to compare GrMemoryPool to default new / delete
#define OVERRIDE_NEW 1
namespace {
struct A {
int gStuff[10];
#if OVERRIDE_NEW
void* operator new (size_t size) { return gPool.allocate(size); }
void operator delete (void* mem) { if (mem) { return gPool.release(mem); } }
#endif
static GrMemoryPool gPool;
};
GrMemoryPool A::gPool(10 * (1 << 10), 10 * (1 << 10));
}
/**
* This benchmark creates and deletes objects in stack order
*/
class GrMemoryPoolBenchStack : public SkBenchmark {
enum {
N = SkBENCHLOOP(5 * (1 << 20)),
};
public:
GrMemoryPoolBenchStack(void* param) : INHERITED(param) {
}
protected:
virtual const char* onGetName() {
return "grmemorypool_stack";
}
virtual void onDraw(SkCanvas* canvas) {
SkRandom r;
enum {
kMaxObjects = 4 * (1 << 10),
};
A* objects[kMaxObjects];
// We delete if a random [-1, 1] fixed pt is < the thresh. Otherwise,
// we allocate. We start allocate-biased and ping-pong to delete-biased
SkFixed delThresh = -SK_FixedHalf;
enum {
kSwitchThreshPeriod = N / (2 * kMaxObjects),
};
int s = 0;
int count = 0;
for (int i = 0; i < N; i++, ++s) {
if (kSwitchThreshPeriod == s) {
delThresh = -delThresh;
s = 0;
}
SkFixed del = r.nextSFixed1();
if (count &&
(kMaxObjects == count || del < delThresh)) {
delete objects[count-1];
--count;
} else {
objects[count] = new A;
++count;
}
}
for (int i = 0; i < count; ++i) {
delete objects[i];
}
}
private:
typedef SkBenchmark INHERITED;
};
/**
* This benchmark creates objects and deletes them in random order
*/
class GrMemoryPoolBenchRandom : public SkBenchmark {
enum {
N = SkBENCHLOOP(5 * (1 << 20)),
};
public:
GrMemoryPoolBenchRandom(void* param) : INHERITED(param) {
}
protected:
virtual const char* onGetName() {
return "grmemorypool_random";
}
virtual void onDraw(SkCanvas* canvas) {
SkRandom r;
enum {
kMaxObjects = 4 * (1 << 10),
};
SkTScopedPtr<A> objects[kMaxObjects];
for (int i = 0; i < N; i++) {
uint32_t idx = r.nextRangeU(0, kMaxObjects-1);
if (NULL == objects[idx].get()) {
objects[idx].reset(new A);
} else {
objects[idx].reset(NULL);
}
}
}
private:
typedef SkBenchmark INHERITED;
};
/**
* This benchmark creates objects and deletes them in queue order
*/
class GrMemoryPoolBenchQueue : public SkBenchmark {
enum {
N = SkBENCHLOOP((1 << 10)),
M = SkBENCHLOOP(4 * (1 << 10)),
};
public:
GrMemoryPoolBenchQueue(void* param) : INHERITED(param) {
}
protected:
virtual const char* onGetName() {
return "grmemorypool_queue";
}
virtual void onDraw(SkCanvas* canvas) {
SkRandom r;
A* objects[M];
for (int i = 0; i < N; i++) {
uint32_t count = r.nextRangeU(0, M-1);
for (uint32_t i = 0; i < count; i++) {
objects[i] = new A;
}
for (uint32_t i = 0; i < count; i++) {
delete objects[i];
}
}
}
private:
typedef SkBenchmark INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
static SkBenchmark* Fact1(void* p) { return new GrMemoryPoolBenchStack(p); }
static SkBenchmark* Fact2(void* p) { return new GrMemoryPoolBenchRandom(p); }
static SkBenchmark* Fact3(void* p) { return new GrMemoryPoolBenchQueue(p); }
static BenchRegistry gReg01(Fact1);
static BenchRegistry gReg02(Fact2);
static BenchRegistry gReg03(Fact3);
#endif
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