VM: Re-format to use at most one newline between functions

runtime/bin/socket_base_linux.cc

 // Copyright (c) 2013, 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.
 
 #if !defined(DART_IO_DISABLED)
 
 #include "platform/globals.h"
 #if defined(HOST_OS_LINUX)
 
 #include "bin/socket_base.h"
@@ skipping 20 matching lines @@
 SocketAddress::SocketAddress(struct sockaddr* sa) {
   ASSERT(INET6_ADDRSTRLEN >= INET_ADDRSTRLEN);
   if (!SocketBase::FormatNumericAddress(*reinterpret_cast<RawAddr*>(sa),
                                         as_string_, INET6_ADDRSTRLEN)) {
     as_string_[0] = 0;
   }
   socklen_t salen = GetAddrLength(*reinterpret_cast<RawAddr*>(sa));
   memmove(reinterpret_cast<void*>(&addr_), sa, salen);
 }
 
-
 bool SocketBase::Initialize() {
   // Nothing to do on Linux.
   return true;
 }
 
-
 bool SocketBase::FormatNumericAddress(const RawAddr& addr,
                                       char* address,
                                       int len) {
   socklen_t salen = SocketAddress::GetAddrLength(addr);
   return (NO_RETRY_EXPECTED(getnameinfo(&addr.addr, salen, address, len, NULL,
                                         0, NI_NUMERICHOST) == 0));
 }
 
-
 bool SocketBase::IsBindError(intptr_t error_number) {
   return error_number == EADDRINUSE || error_number == EADDRNOTAVAIL ||
          error_number == EINVAL;
 }
 
-
 intptr_t SocketBase::Available(intptr_t fd) {
   return FDUtils::AvailableBytes(fd);
 }
 
-
 intptr_t SocketBase::Read(intptr_t fd,
                           void* buffer,
                           intptr_t num_bytes,
                           SocketOpKind sync) {
   ASSERT(fd >= 0);
   ssize_t read_bytes = TEMP_FAILURE_RETRY(read(fd, buffer, num_bytes));
   ASSERT(EAGAIN == EWOULDBLOCK);
   if ((sync == kAsync) && (read_bytes == -1) && (errno == EWOULDBLOCK)) {
     // If the read would block we need to retry and therefore return 0
     // as the number of bytes written.
     read_bytes = 0;
   }
   return read_bytes;
 }
 
-
 intptr_t SocketBase::RecvFrom(intptr_t fd,
                               void* buffer,
                               intptr_t num_bytes,
                               RawAddr* addr,
                               SocketOpKind sync) {
   ASSERT(fd >= 0);
   socklen_t addr_len = sizeof(addr->ss);
   ssize_t read_bytes = TEMP_FAILURE_RETRY(
       recvfrom(fd, buffer, num_bytes, 0, &addr->addr, &addr_len));
   if ((sync == kAsync) && (read_bytes == -1) && (errno == EWOULDBLOCK)) {
     // If the read would block we need to retry and therefore return 0
     // as the number of bytes written.
     read_bytes = 0;
   }
   return read_bytes;
 }
 
-
 intptr_t SocketBase::Write(intptr_t fd,
                            const void* buffer,
                            intptr_t num_bytes,
                            SocketOpKind sync) {
   ASSERT(fd >= 0);
   ssize_t written_bytes = TEMP_FAILURE_RETRY(write(fd, buffer, num_bytes));
   ASSERT(EAGAIN == EWOULDBLOCK);
   if ((sync == kAsync) && (written_bytes == -1) && (errno == EWOULDBLOCK)) {
     // If the would block we need to retry and therefore return 0 as
     // the number of bytes written.
     written_bytes = 0;
   }
   return written_bytes;
 }
 
-
 intptr_t SocketBase::SendTo(intptr_t fd,
                             const void* buffer,
                             intptr_t num_bytes,
                             const RawAddr& addr,
                             SocketOpKind sync) {
   ASSERT(fd >= 0);
   ssize_t written_bytes =
       TEMP_FAILURE_RETRY(sendto(fd, buffer, num_bytes, 0, &addr.addr,
                                 SocketAddress::GetAddrLength(addr)));
   ASSERT(EAGAIN == EWOULDBLOCK);
   if ((sync == kAsync) && (written_bytes == -1) && (errno == EWOULDBLOCK)) {
     // If the would block we need to retry and therefore return 0 as
     // the number of bytes written.
     written_bytes = 0;
   }
   return written_bytes;
 }
 
-
 intptr_t SocketBase::GetPort(intptr_t fd) {
   ASSERT(fd >= 0);
   RawAddr raw;
   socklen_t size = sizeof(raw);
   if (NO_RETRY_EXPECTED(getsockname(fd, &raw.addr, &size))) {
     return 0;
   }
   return SocketAddress::GetAddrPort(raw);
 }
 
-
 SocketAddress* SocketBase::GetRemotePeer(intptr_t fd, intptr_t* port) {
   ASSERT(fd >= 0);
   RawAddr raw;
   socklen_t size = sizeof(raw);
   if (NO_RETRY_EXPECTED(getpeername(fd, &raw.addr, &size))) {
     return NULL;
   }
   *port = SocketAddress::GetAddrPort(raw);
   return new SocketAddress(&raw.addr);
 }
 
-
 void SocketBase::GetError(intptr_t fd, OSError* os_error) {
   int len = sizeof(errno);
   int err = 0;
   VOID_NO_RETRY_EXPECTED(getsockopt(fd, SOL_SOCKET, SO_ERROR, &err,
                                     reinterpret_cast<socklen_t*>(&len)));
   errno = err;
   os_error->SetCodeAndMessage(OSError::kSystem, errno);
 }
 
-
 int SocketBase::GetType(intptr_t fd) {
   struct stat64 buf;
   int result = TEMP_FAILURE_RETRY(fstat64(fd, &buf));
   if (result == -1) {
     return -1;
   }
   if (S_ISCHR(buf.st_mode)) {
     return File::kTerminal;
   }
   if (S_ISFIFO(buf.st_mode)) {
     return File::kPipe;
   }
   if (S_ISREG(buf.st_mode)) {
     return File::kFile;
   }
   return File::kOther;
 }
 
-
 intptr_t SocketBase::GetStdioHandle(intptr_t num) {
   return num;
 }
 
-
 AddressList<SocketAddress>* SocketBase::LookupAddress(const char* host,
                                                       int type,
                                                       OSError** os_error) {
   // Perform a name lookup for a host name.
   struct addrinfo hints;
   memset(&hints, 0, sizeof(hints));
   hints.ai_family = SocketAddress::FromType(type);
   hints.ai_socktype = SOCK_STREAM;
   hints.ai_flags = AI_ADDRCONFIG;
   hints.ai_protocol = IPPROTO_TCP;
@@ skipping 22 matching lines @@
   for (struct addrinfo* c = info; c != NULL; c = c->ai_next) {
     if ((c->ai_family == AF_INET) || (c->ai_family == AF_INET6)) {
       addresses->SetAt(i, new SocketAddress(c->ai_addr));
       i++;
     }
   }
   freeaddrinfo(info);
   return addresses;
 }
 
-
 bool SocketBase::ReverseLookup(const RawAddr& addr,
                                char* host,
                                intptr_t host_len,
                                OSError** os_error) {
   ASSERT(host_len >= NI_MAXHOST);
   int status = NO_RETRY_EXPECTED(
       getnameinfo(&addr.addr, SocketAddress::GetAddrLength(addr), host,
                   host_len, NULL, 0, NI_NAMEREQD));
   if (status != 0) {
     ASSERT(*os_error == NULL);
     *os_error =
         new OSError(status, gai_strerror(status), OSError::kGetAddressInfo);
     return false;
   }
   return true;
 }
 
-
 bool SocketBase::ParseAddress(int type, const char* address, RawAddr* addr) {
   int result;
   if (type == SocketAddress::TYPE_IPV4) {
     result = NO_RETRY_EXPECTED(inet_pton(AF_INET, address, &addr->in.sin_addr));
   } else {
     ASSERT(type == SocketAddress::TYPE_IPV6);
     result =
         NO_RETRY_EXPECTED(inet_pton(AF_INET6, address, &addr->in6.sin6_addr));
   }
   return (result == 1);
 }
 
-
 static bool ShouldIncludeIfaAddrs(struct ifaddrs* ifa, int lookup_family) {
   if (ifa->ifa_addr == NULL) {
     // OpenVPN's virtual device tun0.
     return false;
   }
   int family = ifa->ifa_addr->sa_family;
   return ((lookup_family == family) ||
           (((lookup_family == AF_UNSPEC) &&
             ((family == AF_INET) || (family == AF_INET6)))));
 }
 
-
 bool SocketBase::ListInterfacesSupported() {
   return true;
 }
 
-
 AddressList<InterfaceSocketAddress>* SocketBase::ListInterfaces(
     int type,
     OSError** os_error) {
   struct ifaddrs* ifaddr;
 
   int status = NO_RETRY_EXPECTED(getifaddrs(&ifaddr));
   if (status != 0) {
     ASSERT(*os_error == NULL);
     *os_error =
         new OSError(status, gai_strerror(status), OSError::kGetAddressInfo);
@@ skipping 18 matching lines @@
       addresses->SetAt(
           i, new InterfaceSocketAddress(ifa->ifa_addr, ifa_name,
                                         if_nametoindex(ifa->ifa_name)));
       i++;
     }
   }
   freeifaddrs(ifaddr);
   return addresses;
 }
 
-
 void SocketBase::Close(intptr_t fd) {
   ASSERT(fd >= 0);
   VOID_TEMP_FAILURE_RETRY(close(fd));
 }
 
-
 bool SocketBase::GetNoDelay(intptr_t fd, bool* enabled) {
   int on;
   socklen_t len = sizeof(on);
   int err = NO_RETRY_EXPECTED(getsockopt(fd, IPPROTO_TCP, TCP_NODELAY,
                                          reinterpret_cast<void*>(&on), &len));
   if (err == 0) {
     *enabled = (on == 1);
   }
   return (err == 0);
 }
 
-
 bool SocketBase::SetNoDelay(intptr_t fd, bool enabled) {
   int on = enabled ? 1 : 0;
   return NO_RETRY_EXPECTED(setsockopt(fd, IPPROTO_TCP, TCP_NODELAY,
                                       reinterpret_cast<char*>(&on),
                                       sizeof(on))) == 0;
 }
 
-
 bool SocketBase::GetMulticastLoop(intptr_t fd,
                                   intptr_t protocol,
                                   bool* enabled) {
   uint8_t on;
   socklen_t len = sizeof(on);
   int level = protocol == SocketAddress::TYPE_IPV4 ? IPPROTO_IP : IPPROTO_IPV6;
   int optname = protocol == SocketAddress::TYPE_IPV4 ? IP_MULTICAST_LOOP
                                                      : IPV6_MULTICAST_LOOP;
   if (NO_RETRY_EXPECTED(getsockopt(fd, level, optname,
                                    reinterpret_cast<char*>(&on), &len)) == 0) {
     *enabled = (on == 1);
     return true;
   }
   return false;
 }
 
-
 bool SocketBase::SetMulticastLoop(intptr_t fd,
                                   intptr_t protocol,
                                   bool enabled) {
   int on = enabled ? 1 : 0;
   int level = protocol == SocketAddress::TYPE_IPV4 ? IPPROTO_IP : IPPROTO_IPV6;
   int optname = protocol == SocketAddress::TYPE_IPV4 ? IP_MULTICAST_LOOP
                                                      : IPV6_MULTICAST_LOOP;
   return NO_RETRY_EXPECTED(setsockopt(
              fd, level, optname, reinterpret_cast<char*>(&on), sizeof(on))) ==
          0;
 }
 
-
 bool SocketBase::GetMulticastHops(intptr_t fd, intptr_t protocol, int* value) {
   uint8_t v;
   socklen_t len = sizeof(v);
   int level = protocol == SocketAddress::TYPE_IPV4 ? IPPROTO_IP : IPPROTO_IPV6;
   int optname = protocol == SocketAddress::TYPE_IPV4 ? IP_MULTICAST_TTL
                                                      : IPV6_MULTICAST_HOPS;
   if (NO_RETRY_EXPECTED(getsockopt(fd, level, optname,
                                    reinterpret_cast<char*>(&v), &len)) == 0) {
     *value = v;
     return true;
   }
   return false;
 }
 
-
 bool SocketBase::SetMulticastHops(intptr_t fd, intptr_t protocol, int value) {
   int v = value;
   int level = protocol == SocketAddress::TYPE_IPV4 ? IPPROTO_IP : IPPROTO_IPV6;
   int optname = protocol == SocketAddress::TYPE_IPV4 ? IP_MULTICAST_TTL
                                                      : IPV6_MULTICAST_HOPS;
   return NO_RETRY_EXPECTED(setsockopt(
              fd, level, optname, reinterpret_cast<char*>(&v), sizeof(v))) == 0;
 }
 
-
 bool SocketBase::GetBroadcast(intptr_t fd, bool* enabled) {
   int on;
   socklen_t len = sizeof(on);
   int err = NO_RETRY_EXPECTED(getsockopt(fd, SOL_SOCKET, SO_BROADCAST,
                                          reinterpret_cast<char*>(&on), &len));
   if (err == 0) {
     *enabled = (on == 1);
   }
   return (err == 0);
 }
 
-
 bool SocketBase::SetBroadcast(intptr_t fd, bool enabled) {
   int on = enabled ? 1 : 0;
   return NO_RETRY_EXPECTED(setsockopt(fd, SOL_SOCKET, SO_BROADCAST,
                                       reinterpret_cast<char*>(&on),
                                       sizeof(on))) == 0;
 }
 
-
 bool SocketBase::JoinMulticast(intptr_t fd,
                                const RawAddr& addr,
                                const RawAddr&,
                                int interfaceIndex) {
   int proto = addr.addr.sa_family == AF_INET ? IPPROTO_IP : IPPROTO_IPV6;
   struct group_req mreq;
   mreq.gr_interface = interfaceIndex;
   memmove(&mreq.gr_group, &addr.ss, SocketAddress::GetAddrLength(addr));
   return NO_RETRY_EXPECTED(
              setsockopt(fd, proto, MCAST_JOIN_GROUP, &mreq, sizeof(mreq))) == 0;
 }
 
-
 bool SocketBase::LeaveMulticast(intptr_t fd,
                                 const RawAddr& addr,
                                 const RawAddr&,
                                 int interfaceIndex) {
   int proto = addr.addr.sa_family == AF_INET ? IPPROTO_IP : IPPROTO_IPV6;
   struct group_req mreq;
   mreq.gr_interface = interfaceIndex;
   memmove(&mreq.gr_group, &addr.ss, SocketAddress::GetAddrLength(addr));
   return NO_RETRY_EXPECTED(setsockopt(fd, proto, MCAST_LEAVE_GROUP, &mreq,
                                       sizeof(mreq))) == 0;
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(HOST_OS_LINUX)
 
 #endif  // !defined(DART_IO_DISABLED)