1 /*-*- Mode: C; c-basic-offset: 8 -*-*/ 2 3 #ifndef foortkithfoo 4 #define foortkithfoo 5 6 /*** 7 Copyright 2009 Lennart Poettering 8 Copyright 2010 David Henningsson <diwic@ubuntu.com> 9 10 Permission is hereby granted, free of charge, to any person 11 obtaining a copy of this software and associated documentation files 12 (the "Software"), to deal in the Software without restriction, 13 including without limitation the rights to use, copy, modify, merge, 14 publish, distribute, sublicense, and/or sell copies of the Software, 15 and to permit persons to whom the Software is furnished to do so, 16 subject to the following conditions: 17 18 The above copyright notice and this permission notice shall be 19 included in all copies or substantial portions of the Software. 20 21 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 22 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 23 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 24 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 25 BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 26 ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 27 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 28 SOFTWARE. 29 ***/ 30 31 #include <sys/types.h> 32 #include <dbus/dbus.h> 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 /* This is the reference implementation for a client for 39 * RealtimeKit. You don't have to use this, but if do, just copy these 40 * sources into your repository */ 41 42 #define RTKIT_SERVICE_NAME "org.freedesktop.RealtimeKit1" 43 #define RTKIT_OBJECT_PATH "/org/freedesktop/RealtimeKit1" 44 45 /* This is mostly equivalent to sched_setparam(thread, SCHED_RR, { 46 * .sched_priority = priority }). 'thread' needs to be a kernel thread 47 * id as returned by gettid(), not a pthread_t! If 'thread' is 0 the 48 * current thread is used. The returned value is a negative errno 49 * style error code, or 0 on success. */ 50 int rtkit_make_realtime(DBusConnection *system_bus, pid_t thread, int priority); 51 52 /* This is mostly equivalent to setpriority(PRIO_PROCESS, thread, 53 * nice_level). 'thread' needs to be a kernel thread id as returned by 54 * gettid(), not a pthread_t! If 'thread' is 0 the current thread is 55 * used. The returned value is a negative errno style error code, or 0 56 * on success.*/ 57 int rtkit_make_high_priority(DBusConnection *system_bus, pid_t thread, int nice_level); 58 59 /* Return the maximum value of realtime priority available. Realtime requests 60 * above this value will fail. A negative value is an errno style error code. 61 */ 62 int rtkit_get_max_realtime_priority(DBusConnection *system_bus); 63 64 /* Retrieve the minimum value of nice level available. High prio requests 65 * below this value will fail. The returned value is a negative errno 66 * style error code, or 0 on success.*/ 67 int rtkit_get_min_nice_level(DBusConnection *system_bus, int* min_nice_level); 68 69 /* Return the maximum value of RLIMIT_RTTIME to set before attempting a 70 * realtime request. A negative value is an errno style error code. 71 */ 72 long long rtkit_get_rttime_usec_max(DBusConnection *system_bus); 73 74 75 #ifdef __cplusplus 76 } 77 #endif 78 79 #endif 80