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// Copyright 2011 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <stdlib.h>
#include "v8.h"
#include "cctest.h"
#include "platform.h"
#include "utils-inl.h"
using namespace v8::internal;
TEST(Utils1) {
CHECK_EQ(-1000000, FastD2I(-1000000.0));
CHECK_EQ(-1, FastD2I(-1.0));
CHECK_EQ(0, FastD2I(0.0));
CHECK_EQ(1, FastD2I(1.0));
CHECK_EQ(1000000, FastD2I(1000000.0));
CHECK_EQ(-1000000, FastD2I(-1000000.123));
CHECK_EQ(-1, FastD2I(-1.234));
CHECK_EQ(0, FastD2I(0.345));
CHECK_EQ(1, FastD2I(1.234));
CHECK_EQ(1000000, FastD2I(1000000.123));
// Check that >> is implemented as arithmetic shift right.
// If this is not true, then ArithmeticShiftRight() must be changed,
// There are also documented right shifts in assembler.cc of
// int8_t and intptr_t signed integers.
CHECK_EQ(-2, -8 >> 2);
CHECK_EQ(-2, static_cast<int8_t>(-8) >> 2);
CHECK_EQ(-2, static_cast<int>(static_cast<intptr_t>(-8) >> 2));
CHECK_EQ(-1000000, FastD2IChecked(-1000000.0));
CHECK_EQ(-1, FastD2IChecked(-1.0));
CHECK_EQ(0, FastD2IChecked(0.0));
CHECK_EQ(1, FastD2IChecked(1.0));
CHECK_EQ(1000000, FastD2IChecked(1000000.0));
CHECK_EQ(-1000000, FastD2IChecked(-1000000.123));
CHECK_EQ(-1, FastD2IChecked(-1.234));
CHECK_EQ(0, FastD2IChecked(0.345));
CHECK_EQ(1, FastD2IChecked(1.234));
CHECK_EQ(1000000, FastD2IChecked(1000000.123));
CHECK_EQ(INT_MAX, FastD2IChecked(1.0e100));
CHECK_EQ(INT_MIN, FastD2IChecked(-1.0e100));
CHECK_EQ(INT_MIN, FastD2IChecked(OS::nan_value()));
}
TEST(SNPrintF) {
// Make sure that strings that are truncated because of too small
// buffers are zero-terminated anyway.
const char* s = "the quick lazy .... oh forget it!";
int length = StrLength(s);
for (int i = 1; i < length * 2; i++) {
static const char kMarker = static_cast<char>(42);
Vector<char> buffer = Vector<char>::New(i + 1);
buffer[i] = kMarker;
int n = OS::SNPrintF(Vector<char>(buffer.start(), i), "%s", s);
CHECK(n <= i);
CHECK(n == length || n == -1);
CHECK_EQ(0, strncmp(buffer.start(), s, i - 1));
CHECK_EQ(kMarker, buffer[i]);
if (i <= length) {
CHECK_EQ(i - 1, StrLength(buffer.start()));
} else {
CHECK_EQ(length, StrLength(buffer.start()));
}
buffer.Dispose();
}
}
void TestMemCopy(Vector<byte> src,
Vector<byte> dst,
int source_alignment,
int destination_alignment,
int length_alignment) {
memset(dst.start(), 0xFF, dst.length());
byte* to = dst.start() + 32 + destination_alignment;
byte* from = src.start() + source_alignment;
int length = OS::kMinComplexMemCopy + length_alignment;
OS::MemCopy(to, from, static_cast<size_t>(length));
printf("[%d,%d,%d]\n",
source_alignment, destination_alignment, length_alignment);
for (int i = 0; i < length; i++) {
CHECK_EQ(from[i], to[i]);
}
CHECK_EQ(0xFF, to[-1]);
CHECK_EQ(0xFF, to[length]);
}
TEST(MemCopy) {
v8::V8::Initialize();
OS::SetUp();
const int N = OS::kMinComplexMemCopy + 128;
Vector<byte> buffer1 = Vector<byte>::New(N);
Vector<byte> buffer2 = Vector<byte>::New(N);
for (int i = 0; i < N; i++) {
buffer1[i] = static_cast<byte>(i & 0x7F);
}
// Same alignment.
for (int i = 0; i < 32; i++) {
TestMemCopy(buffer1, buffer2, i, i, i * 2);
}
// Different alignment.
for (int i = 0; i < 32; i++) {
for (int j = 1; j < 32; j++) {
TestMemCopy(buffer1, buffer2, i, (i + j) & 0x1F , 0);
}
}
// Different lengths
for (int i = 0; i < 32; i++) {
TestMemCopy(buffer1, buffer2, 3, 7, i);
}
buffer2.Dispose();
buffer1.Dispose();
}
TEST(Collector) {
Collector<int> collector(8);
const int kLoops = 5;
const int kSequentialSize = 1000;
const int kBlockSize = 7;
for (int loop = 0; loop < kLoops; loop++) {
Vector<int> block = collector.AddBlock(7, 0xbadcafe);
for (int i = 0; i < kSequentialSize; i++) {
collector.Add(i);
}
for (int i = 0; i < kBlockSize - 1; i++) {
block[i] = i * 7;
}
}
Vector<int> result = collector.ToVector();
CHECK_EQ(kLoops * (kBlockSize + kSequentialSize), result.length());
for (int i = 0; i < kLoops; i++) {
int offset = i * (kSequentialSize + kBlockSize);
for (int j = 0; j < kBlockSize - 1; j++) {
CHECK_EQ(j * 7, result[offset + j]);
}
CHECK_EQ(0xbadcafe, result[offset + kBlockSize - 1]);
for (int j = 0; j < kSequentialSize; j++) {
CHECK_EQ(j, result[offset + kBlockSize + j]);
}
}
result.Dispose();
}
TEST(SequenceCollector) {
SequenceCollector<int> collector(8);
const int kLoops = 5000;
const int kMaxSequenceSize = 13;
int total_length = 0;
for (int loop = 0; loop < kLoops; loop++) {
int seq_length = loop % kMaxSequenceSize;
collector.StartSequence();
for (int j = 0; j < seq_length; j++) {
collector.Add(j);
}
Vector<int> sequence = collector.EndSequence();
for (int j = 0; j < seq_length; j++) {
CHECK_EQ(j, sequence[j]);
}
total_length += seq_length;
}
Vector<int> result = collector.ToVector();
CHECK_EQ(total_length, result.length());
int offset = 0;
for (int loop = 0; loop < kLoops; loop++) {
int seq_length = loop % kMaxSequenceSize;
for (int j = 0; j < seq_length; j++) {
CHECK_EQ(j, result[offset]);
offset++;
}
}
result.Dispose();
}
TEST(SequenceCollectorRegression) {
SequenceCollector<char> collector(16);
collector.StartSequence();
collector.Add('0');
collector.AddBlock(
i::Vector<const char>("12345678901234567890123456789012", 32));
i::Vector<char> seq = collector.EndSequence();
CHECK_EQ(0, strncmp("0123456789012345678901234567890123",
seq.start(), seq.length()));
}
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