mirror of
https://github.com/dart-lang/sdk
synced 2024-09-05 16:41:07 +00:00
d82ca1a9c7
This has coupled changes in package:ffi and package:tflite_native which are pinned in DEPS. This CL includes the required analyzer changes from https://dart-review.googlesource.com/c/sdk/+/121647. Issue: https://github.com/dart-lang/sdk/issues/38611 Change-Id: I712a886fd28ce0a2954fc42c90e1dfa495057732 Cq-Include-Trybots: luci.dart.try:vm-ffi-android-debug-arm-try,vm-ffi-android-debug-arm64-try,app-kernel-linux-debug-x64-try,vm-kernel-linux-debug-ia32-try,vm-dartkb-linux-debug-simarm64-try,vm-kernel-win-debug-x64-try,vm-kernel-win-debug-ia32-try,vm-dartkb-linux-debug-x64-try,vm-kernel-precomp-linux-debug-x64-try,vm-dartkb-linux-release-x64-abi-try,vm-kernel-precomp-android-release-arm64-try,vm-kernel-asan-linux-release-x64-try,vm-kernel-linux-release-simarm-try,vm-kernel-linux-release-simarm64-try,vm-kernel-precomp-android-release-arm_x64-try,vm-kernel-reload-mac-release-simdbc64-try,vm-kernel-precomp-obfuscate-linux-release-x64-try,vm-kernel-reload-rollback-linux-debug-x64-try,vm-kernel-precomp-mac-release-simarm_x64-try,dart-sdk-linux-try Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/121422 Commit-Queue: Daco Harkes <dacoharkes@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com>
122 lines
2.1 KiB
Dart
122 lines
2.1 KiB
Dart
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
|
|
// for details. All rights reserved. Use of this source code is governed by a
|
|
// BSD-style license that can be found in the LICENSE file.
|
|
|
|
// Micro-benchmark for ffi struct field stores and loads.
|
|
//
|
|
// Only tests a single field because the FfiMemory benchmark already tests loads
|
|
// and stores of different field sizes.
|
|
|
|
import 'dart:ffi';
|
|
|
|
import 'package:ffi/ffi.dart';
|
|
import 'package:benchmark_harness/benchmark_harness.dart';
|
|
|
|
//
|
|
// Struct field store (plus Pointer elementAt and load).
|
|
//
|
|
|
|
void doStoreInt32(Pointer<VeryLargeStruct> pointer, int length) {
|
|
for (int i = 0; i < length; i++) {
|
|
pointer[i].c = 1;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Struct field load (plus Pointer elementAt and load).
|
|
//
|
|
|
|
int doLoadInt32(Pointer<VeryLargeStruct> pointer, int length) {
|
|
int x = 0;
|
|
for (int i = 0; i < length; i++) {
|
|
x += pointer[i].c;
|
|
}
|
|
return x;
|
|
}
|
|
|
|
//
|
|
// Benchmark fixture.
|
|
//
|
|
|
|
// Number of repeats: 1000
|
|
// * CPU: Intel(R) Xeon(R) Gold 6154
|
|
// * Architecture: x64
|
|
// * 150000 - 465000 us (without optimizations)
|
|
// * 14 - ??? us (expected with optimizations, on par with typed data)
|
|
const N = 1000;
|
|
|
|
class FieldLoadStore extends BenchmarkBase {
|
|
Pointer<VeryLargeStruct> pointer;
|
|
FieldLoadStore() : super("FfiStruct.FieldLoadStore");
|
|
|
|
void setup() => pointer = allocate(count: N);
|
|
void teardown() => free(pointer);
|
|
|
|
void run() {
|
|
doStoreInt32(pointer, N);
|
|
final int x = doLoadInt32(pointer, N);
|
|
if (x != N) {
|
|
throw Exception("$name: Unexpected result: $x");
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
// Main driver.
|
|
//
|
|
|
|
main() {
|
|
final benchmarks = [
|
|
() => FieldLoadStore(),
|
|
];
|
|
benchmarks.forEach((benchmark) => benchmark().report());
|
|
}
|
|
|
|
//
|
|
// Test struct.
|
|
//
|
|
class VeryLargeStruct extends Struct {
|
|
@Int8()
|
|
int a;
|
|
|
|
@Int16()
|
|
int b;
|
|
|
|
@Int32()
|
|
int c;
|
|
|
|
@Int64()
|
|
int d;
|
|
|
|
@Uint8()
|
|
int e;
|
|
|
|
@Uint16()
|
|
int f;
|
|
|
|
@Uint32()
|
|
int g;
|
|
|
|
@Uint64()
|
|
int h;
|
|
|
|
@IntPtr()
|
|
int i;
|
|
|
|
@Double()
|
|
double j;
|
|
|
|
@Float()
|
|
double k;
|
|
|
|
Pointer<VeryLargeStruct> parent;
|
|
|
|
@IntPtr()
|
|
int numChildren;
|
|
|
|
Pointer<VeryLargeStruct> children;
|
|
|
|
@Int8()
|
|
int smallLastField;
|
|
}
|