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LibCore: Add a way to mark a socket as blocking (or not)

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If custom I/O is being done outside CIODevice, we need a way to force blocking sometimes.
This also fixes the default of CLocalSocket to be non-blocking, the same
as CTCPSocket.
This commit is contained in:
Robin Burchell 2019-07-16 18:00:08 +02:00 committed by Andreas Kling
parent 6aa77d1999
commit a714fc661d
Notes: sideshowbarker 2024-07-19 13:14:21 +09:00 
Author: https://github.com/rburchell
Commit: https://github.com/SerenityOS/serenity/commit/a714fc661df
Pull-request: https://github.com/SerenityOS/serenity/pull/320
Reviewed-by: https://github.com/awesomekling
3 changed files with 15 additions and 1 deletions
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2
Libraries/LibCore/CLocalSocket.cpp
View file

@ -4,7 +4,7 @@
CLocalSocket::CLocalSocket(CObject* parent)
: CSocket(CSocket::Type::Local, parent)
{
int fd = socket(AF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0);
int fd = socket(AF_LOCAL, SOCK_STREAM | SOCK_NONBLOCK | SOCK_CLOEXEC, 0);
if (fd < 0) {
set_error(fd);
} else {

13
Libraries/LibCore/CSocket.cpp
View file

@ -6,6 +6,8 @@
#include <netinet/in.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/socket.h>
CSocket::CSocket(Type type, CObject* parent)
@ -31,6 +33,17 @@ bool CSocket::connect(const String& hostname, int port)
return connect(host_address, port);
}
void CSocket::set_blocking(bool blocking)
{
int flags = fcntl(fd(), F_GETFL, 0);
ASSERT(flags >= 0);
if (blocking)
flags = fcntl(fd(), F_SETFL, flags | O_NONBLOCK);
else
flags = fcntl(fd(), F_SETFL, flags & O_NONBLOCK);
ASSERT(flags >= 0);
}
bool CSocket::connect(const CSocketAddress& address, int port)
{
ASSERT(!is_connected());

1
Libraries/LibCore/CSocket.h
View file

@ -23,6 +23,7 @@ public:
bool send(const ByteBuffer&);
bool is_connected() const { return m_connected; }
void set_blocking(bool blocking);
CSocketAddress source_address() const { return m_source_address; }
int source_port() const { return m_source_port; }