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// Copyright (c) 2011 Baidu, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Author: Ge,Jun (gejun@baidu.com)
// Date: Mon. Nov 7 14:47:36 CST 2011
#include <fcntl.h> // fcntl()
#include <netinet/in.h> // IPPROTO_TCP
#include <sys/types.h>
#include <sys/socket.h> // setsockopt
#include <netinet/tcp.h> // TCP_NODELAY
namespace butil {
int make_non_blocking(int fd) {
const int flags = fcntl(fd, F_GETFL, 0);
if (flags < 0) {
return flags;
}
if (flags & O_NONBLOCK) {
return 0;
}
return fcntl(fd, F_SETFL, flags | O_NONBLOCK);
}
int make_blocking(int fd) {
const int flags = fcntl(fd, F_GETFL, 0);
if (flags < 0) {
return flags;
}
if (flags & O_NONBLOCK) {
return fcntl(fd, F_SETFL, flags & ~O_NONBLOCK);
}
return 0;
}
int make_close_on_exec(int fd) {
return fcntl(fd, F_SETFD, FD_CLOEXEC);
}
int make_no_delay(int socket) {
int flag = 1;
return setsockopt(socket, IPPROTO_TCP, TCP_NODELAY, (char*)&flag, sizeof(flag));
}
} // namespace butil