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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkChunkAlloc.h"
#include "SkRandom.h"
#include "SkUtils.h"
#include "Test.h"
static void check_alloc(skiatest::Reporter* reporter, const SkChunkAlloc& alloc,
size_t capacity, size_t used, int numBlocks) {
REPORTER_ASSERT(reporter, alloc.totalCapacity() >= capacity);
REPORTER_ASSERT(reporter, alloc.totalUsed() == used);
SkDEBUGCODE(REPORTER_ASSERT(reporter, alloc.blockCount() == numBlocks);)
}
static void* simple_alloc(skiatest::Reporter* reporter, SkChunkAlloc* alloc, size_t size) {
void* ptr = alloc->allocThrow(size);
check_alloc(reporter, *alloc, size, size, 1);
REPORTER_ASSERT(reporter, alloc->contains(ptr));
return ptr;
}
static void check_alloc_alignment(skiatest::Reporter* reporter,
SkChunkAlloc* alloc, size_t size) {
const size_t kAlignment = 8;
void* ptr = alloc->allocThrow(size);
REPORTER_ASSERT(reporter, ptr != nullptr);
REPORTER_ASSERT(reporter, (size_t)ptr % kAlignment == 0);
}
static void test_chunkalloc(skiatest::Reporter* reporter) {
static const size_t kMin = 1024;
SkChunkAlloc alloc(kMin);
//------------------------------------------------------------------------
// check empty
check_alloc(reporter, alloc, 0, 0, 0);
REPORTER_ASSERT(reporter, !alloc.contains(nullptr));
REPORTER_ASSERT(reporter, !alloc.contains(reporter));
// reset on empty allocator
alloc.reset();
check_alloc(reporter, alloc, 0, 0, 0);
// rewind on empty allocator
alloc.rewind();
check_alloc(reporter, alloc, 0, 0, 0);
//------------------------------------------------------------------------
// test reset when something is allocated
size_t size = kMin >> 1;
void* ptr = simple_alloc(reporter, &alloc, size);
alloc.reset();
check_alloc(reporter, alloc, 0, 0, 0);
REPORTER_ASSERT(reporter, !alloc.contains(ptr));
//------------------------------------------------------------------------
// test rewind when something is allocated
ptr = simple_alloc(reporter, &alloc, size);
alloc.rewind();
check_alloc(reporter, alloc, size, 0, 1);
REPORTER_ASSERT(reporter, !alloc.contains(ptr));
// use the available block
ptr = simple_alloc(reporter, &alloc, size);
alloc.reset();
//------------------------------------------------------------------------
// test out allocating a second block
ptr = simple_alloc(reporter, &alloc, size);
ptr = alloc.allocThrow(kMin);
check_alloc(reporter, alloc, 2*kMin, size+kMin, 2);
REPORTER_ASSERT(reporter, alloc.contains(ptr));
//------------------------------------------------------------------------
// test out unalloc
size_t freed = alloc.unalloc(ptr);
REPORTER_ASSERT(reporter, freed == kMin);
check_alloc(reporter, alloc, 2*kMin, size, 2);
REPORTER_ASSERT(reporter, !alloc.contains(ptr));
//------------------------------------------------------------------------
// test the alignment
alloc.reset();
SkRandom rand;
for (int i = 0; i < 1000; i++) {
check_alloc_alignment(reporter, &alloc, rand.nextU16());
}
}
///////////////////////////////////////////////////////////////////////////////
static void set_zero(void* dst, size_t bytes) {
char* ptr = (char*)dst;
for (size_t i = 0; i < bytes; ++i) {
ptr[i] = 0;
}
}
#define MAX_ALIGNMENT 64
#define MAX_COUNT ((MAX_ALIGNMENT) * 32)
#define PAD 32
#define TOTAL (PAD + MAX_ALIGNMENT + MAX_COUNT + PAD)
#define VALUE16 0x1234
#define VALUE32 0x12345678
static void compare16(skiatest::Reporter* r, const uint16_t base[],
uint16_t value, int count) {
for (int i = 0; i < count; ++i) {
if (base[i] != value) {
ERRORF(r, "[%d] expected %x found %x\n", i, value, base[i]);
return;
}
}
}
static void compare32(skiatest::Reporter* r, const uint32_t base[],
uint32_t value, int count) {
for (int i = 0; i < count; ++i) {
if (base[i] != value) {
ERRORF(r, "[%d] expected %x found %x\n", i, value, base[i]);
return;
}
}
}
static void test_16(skiatest::Reporter* reporter) {
uint16_t buffer[TOTAL];
for (int count = 0; count < MAX_COUNT; ++count) {
for (int alignment = 0; alignment < MAX_ALIGNMENT; ++alignment) {
set_zero(buffer, sizeof(buffer));
uint16_t* base = &buffer[PAD + alignment];
sk_memset16(base, VALUE16, count);
compare16(reporter, buffer, 0, PAD + alignment);
compare16(reporter, base, VALUE16, count);
compare16(reporter, base + count, 0, TOTAL - count - PAD - alignment);
}
}
}
static void test_32(skiatest::Reporter* reporter) {
uint32_t buffer[TOTAL];
for (int count = 0; count < MAX_COUNT; ++count) {
for (int alignment = 0; alignment < MAX_ALIGNMENT; ++alignment) {
set_zero(buffer, sizeof(buffer));
uint32_t* base = &buffer[PAD + alignment];
sk_memset32(base, VALUE32, count);
compare32(reporter, buffer, 0, PAD + alignment);
compare32(reporter, base, VALUE32, count);
compare32(reporter, base + count, 0, TOTAL - count - PAD - alignment);
}
}
}
/**
* Test sk_memset16 and sk_memset32.
* For performance considerations, implementations may take different paths
* depending on the alignment of the dst, and/or the size of the count.
*/
DEF_TEST(Memset, reporter) {
test_16(reporter);
test_32(reporter);
test_chunkalloc(reporter);
}
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