From 18e975fc5ef68a89875c77974570884b9214a009 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Mon, 20 Jul 2009 17:34:17 +0200 Subject: merged --- src/modules/reserve-monitor.h | 72 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 src/modules/reserve-monitor.h (limited to 'src/modules/reserve-monitor.h') diff --git a/src/modules/reserve-monitor.h b/src/modules/reserve-monitor.h new file mode 100644 index 00000000..421a52e0 --- /dev/null +++ b/src/modules/reserve-monitor.h @@ -0,0 +1,72 @@ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: t -*-*/ + +#ifndef fooreservemonitorhfoo +#define fooreservemonitorhfoo + +/*** + Copyright 2009 Lennart Poettering + + Permission is hereby granted, free of charge, to any person + obtaining a copy of this software and associated documentation files + (the "Software"), to deal in the Software without restriction, + including without limitation the rights to use, copy, modify, merge, + publish, distribute, sublicense, and/or sell copies of the Software, + and to permit persons to whom the Software is furnished to do so, + subject to the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + SOFTWARE. +***/ + +#include +#include + +#ifdef __cplusplus +extern "C" { +#endif + +typedef struct rm_monitor rm_monitor; + +/* Prototype for a function that is called whenever the reservation + * device of a device changes. Use rm_monitor_busy() to find out the + * new state.*/ +typedef void (*rm_change_cb_t)(rm_monitor *m); + +/* Creates a monitor for watching the lock status of a device. Returns + * 0 on success, a negative errno style return value on error. The + * DBus error might be set as well if the error was caused D-Bus. */ +int rm_watch( + rm_monitor **m, /* On success a pointer to the newly allocated rm_device object will be filled in here */ + DBusConnection *connection, /* Session bus (when D-Bus learns about user busses we should switchg to user busses) */ + const char *device_name, /* The device to monitor, e.g. "Audio0" */ + rm_change_cb_t change_cb, /* Will be called whenever the lock status changes. May be NULL */ + DBusError *error); /* If we fail due to a D-Bus related issue the error will be filled in here. May be NULL. */ + +/* Free a rm_monitor object */ +void rm_release(rm_monitor *m); + +/* Checks whether the device is currently reserved, and returns 1 + * then, 0 if not, negative errno style error code value on error. */ +int rm_busy(rm_monitor *m); + +/* Attach a userdata pointer to an rm_monitor */ +void rm_set_userdata(rm_monitor *m, void *userdata); + +/* Query the userdata pointer from an rm_monitor. Returns NULL if no + * userdata was set. */ +void* rm_get_userdata(rm_monitor *m); + +#ifdef __cplusplus +} +#endif + +#endif -- cgit