blob: c281d3e19c197935edd864ff88a9138670621ec6 [file] [log] [blame]
// 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.
#include <stdlib.h>
#include <string.h>
#include <iostream>
#if defined(_WIN32)
#define DART_EXPORT extern "C" __declspec(dllexport)
#define DART_EXPORT \
extern "C" __attribute__((visibility("default"))) __attribute((used))
DART_EXPORT intptr_t return42() {
return 42;
DART_EXPORT double timesFour(double d) {
return d * 4.0;
// Wrap memmove so we can easily find it on all platforms.
// We use this in our samples to illustrate resource lifetime management.
DART_EXPORT void MemMove(void* destination, void* source, intptr_t num_bytes) {
memmove(destination, source, num_bytes);
// Some opaque struct.
typedef struct {
} some_resource;
DART_EXPORT some_resource* AllocateResource() {
void* pointer = malloc(sizeof(int64_t));
// Dummy initialize.
static_cast<int64_t*>(pointer)[0] = 10;
return static_cast<some_resource*>(pointer);
DART_EXPORT void UseResource(some_resource* resource) {
// Dummy change.
reinterpret_cast<int64_t*>(resource)[0] += 10;
DART_EXPORT void ReleaseResource(some_resource* resource) {