Merge commit 'e988fee1679536137b87d10e939eff5c1f27c8ab' as 'libs/libzmq'

2022-10-22 14:31:55 +02:00
parent 4841b3ff17 e988fee167
commit 3d97ffdfea
1118 changed files with 149390 additions and 0 deletions
--- a/libs/libzmq/src/kqueue.hpp
+++ b/libs/libzmq/src/kqueue.hpp
@@ -0,0 +1,109 @@
+/*
+    Copyright (c) 2007-2016 Contributors as noted in the AUTHORS file
+
+    This file is part of libzmq, the ZeroMQ core engine in C++.
+
+    libzmq is free software; you can redistribute it and/or modify it under
+    the terms of the GNU Lesser General Public License (LGPL) as published
+    by the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    As a special exception, the Contributors give you permission to link
+    this library with independent modules to produce an executable,
+    regardless of the license terms of these independent modules, and to
+    copy and distribute the resulting executable under terms of your choice,
+    provided that you also meet, for each linked independent module, the
+    terms and conditions of the license of that module. An independent
+    module is a module which is not derived from or based on this library.
+    If you modify this library, you must extend this exception to your
+    version of the library.
+
+    libzmq is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
+    License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __ZMQ_KQUEUE_HPP_INCLUDED__
+#define __ZMQ_KQUEUE_HPP_INCLUDED__
+
+//  poller.hpp decides which polling mechanism to use.
+#include "poller.hpp"
+#if defined ZMQ_IOTHREAD_POLLER_USE_KQUEUE
+
+#include <vector>
+#include <unistd.h>
+
+#include "ctx.hpp"
+#include "fd.hpp"
+#include "thread.hpp"
+#include "poller_base.hpp"
+
+namespace zmq
+{
+struct i_poll_events;
+
+//  Implements socket polling mechanism using the BSD-specific
+//  kqueue interface.
+
+class kqueue_t ZMQ_FINAL : public worker_poller_base_t
+{
+  public:
+    typedef void *handle_t;
+
+    kqueue_t (const thread_ctx_t &ctx_);
+    ~kqueue_t () ZMQ_FINAL;
+
+    //  "poller" concept.
+    handle_t add_fd (fd_t fd_, zmq::i_poll_events *events_);
+    void rm_fd (handle_t handle_);
+    void set_pollin (handle_t handle_);
+    void reset_pollin (handle_t handle_);
+    void set_pollout (handle_t handle_);
+    void reset_pollout (handle_t handle_);
+    void stop ();
+
+    static int max_fds ();
+
+  private:
+    //  Main event loop.
+    void loop () ZMQ_FINAL;
+
+    //  File descriptor referring to the kernel event queue.
+    fd_t kqueue_fd;
+
+    //  Adds the event to the kqueue.
+    void kevent_add (fd_t fd_, short filter_, void *udata_);
+
+    //  Deletes the event from the kqueue.
+    void kevent_delete (fd_t fd_, short filter_);
+
+    struct poll_entry_t
+    {
+        fd_t fd;
+        bool flag_pollin;
+        bool flag_pollout;
+        zmq::i_poll_events *reactor;
+    };
+
+    //  List of retired event sources.
+    typedef std::vector<poll_entry_t *> retired_t;
+    retired_t retired;
+
+    ZMQ_NON_COPYABLE_NOR_MOVABLE (kqueue_t)
+
+#ifdef HAVE_FORK
+    // the process that created this context. Used to detect forking.
+    pid_t pid;
+#endif
+};
+
+typedef kqueue_t poller_t;
+}
+
+#endif
+
+#endif