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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/vespalib/testkit/test_kit.h>
#include <vespa/fnet/databuffer.h>
#include <chrono>
TEST("test resetIfEmpty") {
FNET_DataBuffer buf(64);
EXPECT_TRUE(buf.GetData() == buf.GetDead());
EXPECT_TRUE(buf.GetData() == buf.GetFree());
buf.WriteInt32(11111111);
EXPECT_TRUE(buf.GetData() == buf.GetDead());
EXPECT_FALSE(buf.GetData() == buf.GetFree());
buf.resetIfEmpty();
EXPECT_TRUE(buf.GetData() == buf.GetDead());
EXPECT_FALSE(buf.GetData() == buf.GetFree());
EXPECT_EQUAL(11111111u, buf.ReadInt32());
buf.resetIfEmpty();
EXPECT_TRUE(buf.GetData() == buf.GetDead());
EXPECT_TRUE(buf.GetData() == buf.GetFree());
}
TEST("testResize") {
FNET_DataBuffer buf(64);
uint32_t initialSize = buf.GetBufSize();
buf.WriteInt32(11111111);
buf.WriteInt32(22222222);
buf.WriteInt32(33333333);
buf.WriteInt32(44444444);
buf.WriteInt32(55555555);
EXPECT_TRUE(buf.ReadInt32() == 11111111);
buf.EnsureFree(initialSize);
EXPECT_TRUE(buf.GetBufSize() > initialSize);
EXPECT_TRUE(buf.ReadInt32() == 22222222);
EXPECT_TRUE(!buf.Shrink(buf.GetBufSize()));
EXPECT_TRUE(!buf.Shrink(buf.GetBufSize() + 16));
EXPECT_TRUE(!buf.Shrink(2 * 4));
EXPECT_TRUE(buf.Shrink(3 * 4));
EXPECT_TRUE(buf.GetBufSize() == 3 * 4);
EXPECT_TRUE(buf.ReadInt32() == 33333333);
buf.WriteInt32(66666666);
buf.EnsureFree(16);
EXPECT_TRUE(buf.GetDataLen() == 3 * 4);
EXPECT_TRUE(buf.GetBufSize() >= 16 + 3 * 4);
EXPECT_TRUE(buf.ReadInt32() == 44444444);
EXPECT_TRUE(buf.ReadInt32() == 55555555);
EXPECT_TRUE(buf.ReadInt32() == 66666666);
EXPECT_TRUE(buf.Shrink(0));
EXPECT_TRUE(buf.GetBufSize() == 0);
buf.WriteInt32(42);
EXPECT_TRUE(buf.GetBufSize() >= 4);
EXPECT_TRUE(buf.ReadInt32() == 42);
EXPECT_TRUE(buf.GetDataLen() == 0);
}
TEST("testSpeed") {
using clock = std::chrono::steady_clock;
using ms_double = std::chrono::duration<double, std::milli>;
FNET_DataBuffer buf0(20000);
FNET_DataBuffer buf1(20000);
FNET_DataBuffer buf2(20000);
clock::time_point start;
ms_double ms;
int i;
int k;
// fill buf0 with random data
for (i = 0; i < 16000; i++) {
buf0.WriteInt8((uint8_t)rand());
}
// copy buf0 into buf1
for (i = 0; i < 16000; i++) {
buf1.WriteInt8(buf0.ReadInt8());
}
// undo read from buf0
buf0.DeadToData(buf0.GetDeadLen());
// test encode/decode speed
start = clock::now();
for (i = 0; i < 5000; i++) {
buf2.Clear();
for (k = 0; k < 500; k++) {
buf2.WriteInt8(buf1.ReadInt8());
buf2.WriteInt32(buf1.ReadInt32());
buf2.WriteInt8(buf1.ReadInt8());
buf2.WriteInt8(buf1.ReadInt8());
buf2.WriteInt16(buf1.ReadInt16());
buf2.WriteInt8(buf1.ReadInt8());
buf2.WriteInt32(buf1.ReadInt32());
buf2.WriteInt16(buf1.ReadInt16());
buf2.WriteInt32(buf1.ReadInt32());
buf2.WriteInt64(buf1.ReadInt64());
buf2.WriteInt32(buf1.ReadInt32());
}
buf1.Clear();
for (k = 0; k < 500; k++) {
buf1.WriteInt8(buf2.ReadInt8());
buf1.WriteInt16(buf2.ReadInt16());
buf1.WriteInt8(buf2.ReadInt8());
buf1.WriteInt32(buf2.ReadInt32());
buf1.WriteInt32(buf2.ReadInt32());
buf1.WriteInt8(buf2.ReadInt8());
buf1.WriteInt64(buf2.ReadInt64());
buf1.WriteInt32(buf2.ReadInt32());
buf1.WriteInt8(buf2.ReadInt8());
buf1.WriteInt16(buf2.ReadInt16());
buf1.WriteInt32(buf2.ReadInt32());
}
}
buf2.DeadToData(buf2.GetDeadLen());
ms = (clock::now() - start);
fprintf(stderr, "encode/decode time (~160MB): %1.2f\n", ms.count());
EXPECT_TRUE(buf0.Equals(&buf1) && buf0.Equals(&buf2));
// test encode[fast]/decode speed
start = clock::now();
for (i = 0; i < 5000; i++) {
buf2.Clear();
for (k = 0; k < 500; k++) {
buf2.WriteInt8Fast(buf1.ReadInt8());
buf2.WriteInt32Fast(buf1.ReadInt32());
buf2.WriteInt8Fast(buf1.ReadInt8());
buf2.WriteInt8Fast(buf1.ReadInt8());
buf2.WriteInt16Fast(buf1.ReadInt16());
buf2.WriteInt8Fast(buf1.ReadInt8());
buf2.WriteInt32Fast(buf1.ReadInt32());
buf2.WriteInt16Fast(buf1.ReadInt16());
buf2.WriteInt32Fast(buf1.ReadInt32());
buf2.WriteInt64Fast(buf1.ReadInt64());
buf2.WriteInt32Fast(buf1.ReadInt32());
}
buf1.Clear();
for (k = 0; k < 500; k++) {
buf1.WriteInt8Fast(buf2.ReadInt8());
buf1.WriteInt16Fast(buf2.ReadInt16());
buf1.WriteInt8Fast(buf2.ReadInt8());
buf1.WriteInt32Fast(buf2.ReadInt32());
buf1.WriteInt32Fast(buf2.ReadInt32());
buf1.WriteInt8Fast(buf2.ReadInt8());
buf1.WriteInt64Fast(buf2.ReadInt64());
buf1.WriteInt32Fast(buf2.ReadInt32());
buf1.WriteInt8Fast(buf2.ReadInt8());
buf1.WriteInt16Fast(buf2.ReadInt16());
buf1.WriteInt32Fast(buf2.ReadInt32());
}
}
buf2.DeadToData(buf2.GetDeadLen());
ms = (clock::now() - start);
fprintf(stderr, "encode[fast]/decode time (~160MB): %1.2f\n", ms.count());
EXPECT_TRUE(buf0.Equals(&buf1) && buf0.Equals(&buf2));
// init source table for table streaming test
uint32_t table[4000];
for (i = 0; i < 4000; i++) {
table[i] = i;
}
// test byte-swap table encoding speed
start = clock::now();
for (i = 0; i < 10000; i++) {
buf1.Clear();
for (k = 0; k < 4000; k += 8) {
buf1.WriteInt32Fast(table[k]);
buf1.WriteInt32Fast(table[k + 1]);
buf1.WriteInt32Fast(table[k + 2]);
buf1.WriteInt32Fast(table[k + 3]);
buf1.WriteInt32Fast(table[k + 4]);
buf1.WriteInt32Fast(table[k + 5]);
buf1.WriteInt32Fast(table[k + 6]);
buf1.WriteInt32Fast(table[k + 7]);
}
}
ms = (clock::now() - start);
fprintf(stderr, "byte-swap array encoding[fast] (~160 MB): %1.2f ms\n",
ms.count());
// test direct-copy table encoding speed
start = clock::now();
for (i = 0; i < 10000; i++) {
buf2.Clear();
buf2.EnsureFree(16000);
memcpy(buf2.GetFree(), table, 16000);
buf2.FreeToData(16000);
}
ms = (clock::now() - start);
fprintf(stderr, "direct-copy array encoding (~160 MB): %1.2f ms\n",
ms.count());
}
TEST_MAIN() { TEST_RUN_ALL(); }
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