要比较Android Binder与Unix Socket的性能,可以采用以下步骤和代码示例:
Android Binder服务端示例代码:
public class MyBinderService extends Service {
private final IBinder binder = new MyBinder();
private class MyBinder extends Binder {
MyBinderService getService() {
return MyBinderService.this;
}
}
@Override
public IBinder onBind(Intent intent) {
return binder;
}
public String processData(String data) {
// 在这里处理接收到的数据,并返回处理结果
}
}
Unix Socket服务端示例代码:
#include
#include
#include
#include
#include
#include
#include
#define SOCKET_PATH "/tmp/my_unix_socket"
int main() {
int sockfd = socket(AF_UNIX, SOCK_STREAM, 0);
if (sockfd == -1) {
perror("socket");
exit(EXIT_FAILURE);
}
struct sockaddr_un addr;
memset(&addr, 0, sizeof(struct sockaddr_un));
addr.sun_family = AF_UNIX;
strncpy(addr.sun_path, SOCKET_PATH, sizeof(addr.sun_path) - 1);
if (bind(sockfd, (struct sockaddr *)&addr, sizeof(struct sockaddr_un)) == -1) {
perror("bind");
exit(EXIT_FAILURE);
}
if (listen(sockfd, 5) == -1) {
perror("listen");
exit(EXIT_FAILURE);
}
while (1) {
int clientfd = accept(sockfd, NULL, NULL);
if (clientfd == -1) {
perror("accept");
continue;
}
char buffer[1024];
ssize_t bytesRead = read(clientfd, buffer, sizeof(buffer));
if (bytesRead == -1) {
perror("read");
} else {
// 在这里处理接收到的数据,并返回处理结果
write(clientfd, buffer, bytesRead);
}
close(clientfd);
}
close(sockfd);
return 0;
}
Android客户端示例代码:
public class MyBinderClient {
private static final String SERVICE_NAME = "com.example.MyBinderService";
public String processData(String data) {
MyBinderServiceConnection connection = new MyBinderServiceConnection();
Intent intent = new Intent();
intent.setComponent(new ComponentName(SERVICE_NAME, SERVICE_NAME));
boolean bound = bindService(intent, connection, BIND_AUTO_CREATE);
if (bound) {
MyBinderService service = connection.getService();
String result = service.processData(data);
unbindService(connection);
return result;
}
return null;
}
private class MyBinderServiceConnection implements ServiceConnection {
private MyBinderService service;
public MyBinderService getService() {
return service;
}
@Override
public void onServiceConnected(ComponentName name, IBinder binder) {
service = ((MyBinderService.MyBinder) binder).getService();
}
@Override
public void onServiceDisconnected(ComponentName name) {
service = null;
}
}
}
Unix客户端示例代码:
#include
#include
#include
#include
#include
#include
#include
#define SOCKET_PATH "/tmp/my_unix_socket"
int main() {
int sockfd = socket(AF_UNIX, SOCK_STREAM, 0);
if (sockfd == -1) {
perror("socket");
exit(EXIT_FAILURE);
}
struct sockaddr_un addr;
memset(&addr, 0, sizeof(struct sockaddr_un));
addr.sun_family = AF_UNIX;
strncpy(addr.sun_path, SOCKET_PATH, sizeof(addr.sun_path) - 1);
if (connect(sockfd, (struct sockaddr *)&addr, sizeof(struct sockaddr_un)) == -1) {
perror("connect");
exit(EXIT_FAILURE);
}
char buffer[1024] = "Hello, server!";
if (write(sockfd, buffer, sizeof(buffer)) == -1) {
perror("write");
} else {
ssize_t bytesRead = read(sockfd, buffer, sizeof(buffer));
if (bytesRead == -1) {
perror("read");
} else {
// 处理接收到的数据