flatbuffers/benchmarks/cpp/raw/raw_bench.cpp

110 lines
2.7 KiB
C++

#include "benchmarks/cpp/raw/raw_bench.h"
#include <cstdint>
#include <cstring>
#include <memory>
#include "benchmarks/cpp/bench.h"
namespace {
const int64_t kStringLength = 32;
const int64_t kVectorLength = 3;
enum Enum { Apples, Pears, Bananas };
struct Foo {
int64_t id;
short count;
char prefix;
int length;
};
struct Bar {
Foo parent;
int time;
float ratio;
unsigned short size;
};
struct FooBar {
Bar sibling;
// We have to stick this in, otherwise strlen() will make it slower than
// FlatBuffers:
int name_len;
char name[kStringLength];
double rating;
unsigned char postfix;
};
struct FooBarContainer {
FooBar list[kVectorLength]; // 3 copies of the above
bool initialized;
Enum fruit;
int location_len;
char location[kStringLength];
};
struct RawBench : Bench {
uint8_t *Encode(void *buf, int64_t &len) override {
FooBarContainer *fbc = new (buf) FooBarContainer;
strcpy(fbc->location, "http://google.com/flatbuffers/"); // Unsafe eek!
fbc->location_len = (int)strlen(fbc->location);
fbc->fruit = Bananas;
fbc->initialized = true;
for (int i = 0; i < kVectorLength; i++) {
// We add + i to not make these identical copies for a more realistic
// compression test.
auto &foobar = fbc->list[i];
foobar.rating = 3.1415432432445543543 + i;
foobar.postfix = '!' + i;
strcpy(foobar.name, "Hello, World!");
foobar.name_len = (int)strlen(foobar.name);
auto &bar = foobar.sibling;
bar.ratio = 3.14159f + i;
bar.size = 10000 + i;
bar.time = 123456 + i;
auto &foo = bar.parent;
foo.id = 0xABADCAFEABADCAFE + i;
foo.count = 10000 + i;
foo.length = 1000000 + i;
foo.prefix = '@' + i;
}
len = sizeof(FooBarContainer);
return reinterpret_cast<uint8_t *>(fbc);
};
int64_t Use(void *decoded) override {
auto foobarcontainer = reinterpret_cast<FooBarContainer *>(decoded);
sum = 0;
Add(foobarcontainer->initialized);
Add(foobarcontainer->location_len);
Add(foobarcontainer->fruit);
for (unsigned int i = 0; i < kVectorLength; i++) {
auto foobar = &foobarcontainer->list[i];
Add(foobar->name_len);
Add(foobar->postfix);
Add(static_cast<int64_t>(foobar->rating));
auto bar = &foobar->sibling;
Add(static_cast<int64_t>(bar->ratio));
Add(bar->size);
Add(bar->time);
auto &foo = bar->parent;
Add(foo.count);
Add(foo.id);
Add(foo.length);
Add(foo.prefix);
}
return sum;
}
void *Decode(void *buf, int64_t) override { return buf; }
void Dealloc(void *) override{};
};
} // namespace
std::unique_ptr<Bench> NewRawBench() {
return std::unique_ptr<RawBench>(new RawBench());
}