84 lines
1.9 KiB
C++
84 lines
1.9 KiB
C++
/*
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* Copyright 2003-2021 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "Client.hxx"
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#include "Config.hxx"
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#include "Response.hxx"
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#include "Idle.hxx"
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#include <fmt/format.h>
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#include <cassert>
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static void
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WriteIdleResponse(Response &r, unsigned flags) noexcept
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{
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const char *const*idle_names = idle_get_names();
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for (unsigned i = 0; idle_names[i]; ++i) {
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if (flags & (1 << i))
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r.Fmt(FMT_STRING("changed: {}\n"), idle_names[i]);
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}
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r.Write("OK\n");
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}
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void
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Client::IdleNotify() noexcept
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{
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assert(idle_waiting);
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assert(idle_flags != 0);
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unsigned flags = std::exchange(idle_flags, 0) & idle_subscriptions;
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idle_waiting = false;
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Response r(*this, 0);
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WriteIdleResponse(r, flags);
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timeout_event.Schedule(client_timeout);
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}
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void
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Client::IdleAdd(unsigned flags) noexcept
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{
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if (IsExpired())
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return;
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idle_flags |= flags;
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if (idle_waiting && (idle_flags & idle_subscriptions))
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IdleNotify();
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}
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bool
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Client::IdleWait(unsigned flags) noexcept
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{
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assert(!idle_waiting);
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idle_waiting = true;
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idle_subscriptions = flags;
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if (idle_flags & idle_subscriptions) {
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IdleNotify();
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return true;
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} else {
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/* disable timeouts while in "idle" */
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timeout_event.Cancel();
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return false;
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}
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}
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