问题描述
我试图让下面的示例code工作要知道异步编程工作是否在Android的NDK。虽然NDK有STL <未来>
这被认为是一个头球攻门,的std ::异步
是没有得到公认的是没有得到认可。在code我试图用是以下内容:
的#include<未来>
#包括<的iostream>
结构美孚
{
美孚():数据(0){}
无效总和(int i)以{数据+ =我;}
int数据;
};
诠释的main()
{
富富;
汽车F =的std ::异步(安培;富::总和,和放大器; FOO,42);
f.get();
性病::法院<< foo.data<< \ N的;
}
另外所有的包括路径已被设置为在属性 - >路径和符号
指定的文件夹 错误
描述资源路径位置类型
无效的使用不完全型'的std :: __ async_sfinae_helper<无效(美孚:: *)(INT),无效(美孚:: *)(INT),富*,INT和GT; ::类型{又名结构的std ::未来<无效:GT ;}'将sample.cpp / Project12 / JNI行50 C / C ++问题
描述资源路径位置类型
声明'的std :: __ async_sfinae_helper<无效(美孚:: *)(INT),无效(美孚:: *)(INT),富*,INT和GT; ::类型{又名结构的std ::未来<无效>} Project12线111,外部位置:D:\ Android的NDK-R8E - 窗口 - x86_64的\ Android的NDK-R8E \来源\ CXX-STL \ GNU-的libstdc ++ \ 4.6 \包括\未来的C / C ++问题
Curently的Android NDK不把所有的C ++ 11的特性。锵3.3编译器NDK R9B是C ++ 11的功能齐全,但是, STL
和 STDLIB
在Android上不
要使用最新的 C ++ 11
的功能在Android的设置使用锵3.3编译器的Android NDK R9B
。把此行到您的 Application.mk
文件:
NDK_TOOLCHAIN_VERSION:=铛
此外,添加 -std = C ++ 11
切换到 LOCAL_CPPFLAGS
变量:
LOCAL_CPPFLAGS + = -std = C + + 11
I have tried to get following sample code working to know whether asynchronous programming is working in Android NDK. Though NDK has the STL <future>
which gets recognized as a header, the std::async
is not getting recognized are not getting recognized. The code I tried to use was the following:
#include <future>
#include <iostream>
struct Foo
{
Foo() : data(0) {}
void sum(int i) { data +=i;}
int data;
};
int main()
{
Foo foo;
auto f = std::async(&Foo::sum, &foo, 42);
f.get();
std::cout << foo.data << "\n";
}
Also all the include paths have been set to the specified folder under Properties->Paths and Symbols
Errors
Description Resource Path Location Type
invalid use of incomplete type 'std::__async_sfinae_helper<void (Foo::*)(int), void (Foo::*)(int), Foo*, int>::type {aka struct std::future<void>}' Sample.cpp /Project12/jni line 50 C/C++ Problem
Description Resource Path Location Type
declaration of 'std::__async_sfinae_helper<void (Foo::*)(int), void (Foo::*)(int), Foo*, int>::type {aka struct std::future<void>}' Project12 line 111, external location: D:\android-ndk-r8e-windows-x86_64\android-ndk-r8e\sources\cxx-stl\gnu-libstdc++\4.6\include\future C/C++ Problem
Curently Android NDK does not incorporate all of the C++11 features. Clang 3.3 compiler from NDK r9b is C++11-feature complete, however, STL
and stdlib
on Android are not.
To use the most recent C++11
feature set in Android use Clang 3.3 compiler from Android NDK r9b
. Put this line into your Application.mk
file:
NDK_TOOLCHAIN_VERSION := clang
Also, add -std=c++11
switch to the LOCAL_CPPFLAGS
variable:
LOCAL_CPPFLAGS += -std=c++11
这篇关于C ++ 11的std ::异步于Android的NDK不工作的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!