1 // -----------------------------------------------------------------------
2 // Copyright (C) 2006 - 2008 FRESCOR consortium partners:
4 // Universidad de Cantabria, SPAIN
5 // University of York, UK
6 // Scuola Superiore Sant'Anna, ITALY
7 // Kaiserslautern University, GERMANY
8 // Univ. Politécnica Valencia, SPAIN
9 // Czech Technical University in Prague, CZECH REPUBLIC
11 // Thales Communication S.A. FRANCE
12 // Visual Tools S.A. SPAIN
13 // Rapita Systems Ltd UK
16 // See http://www.frescor.org for a link to partners' websites
18 // FRESCOR project (FP6/2005/IST/5-034026) is funded
19 // in part by the European Union Sixth Framework Programme
20 // The European Union is not liable of any use that may be
24 // based on previous work (FSF) done in the FIRST project
26 // Copyright (C) 2005 Mälardalen University, SWEDEN
27 // Scuola Superiore S.Anna, ITALY
28 // Universidad de Cantabria, SPAIN
29 // University of York, UK
31 // FSF API web pages: http://marte.unican.es/fsf/docs
32 // http://shark.sssup.it/contrib/first/docs/
34 // This file is part of FOSA (Frsh Operating System Adaption)
36 // FOSA is free software; you can redistribute it and/or modify it
37 // under terms of the GNU General Public License as published by the
38 // Free Software Foundation; either version 2, or (at your option) any
39 // later version. FOSA is distributed in the hope that it will be
40 // useful, but WITHOUT ANY WARRANTY; without even the implied warranty
41 // of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
42 // General Public License for more details. You should have received a
43 // copy of the GNU General Public License along with FOSA; see file
44 // COPYING. If not, write to the Free Software Foundation, 675 Mass Ave,
45 // Cambridge, MA 02139, USA.
47 // As a special exception, including FOSA header files in a file,
48 // instantiating FOSA generics or templates, or linking other files
49 // with FOSA objects to produce an executable application, does not
50 // by itself cause the resulting executable application to be covered
51 // by the GNU General Public License. This exception does not
52 // however invalidate any other reasons why the executable file might be
53 // covered by the GNU Public License.
54 // -----------------------------------------------------------------------
55 //fosa_thread_groups.h
56 //==============================================
57 // ******** ****** ******** **********
58 // **///// /** ** **////// /** /**
59 // ** /** ** /** /** /**
60 // ******* /** ** /********* /**********
61 // **//// /** ** ////////** /**//////**
62 // ** /** ** /** /** /**
63 // ** /** ** ******** /** /**
64 // // /******/ //////// // //
66 // FOSA(Frescor Operating System Adaptation layer)
67 //================================================
69 #ifndef _FOSA_THREAD_GROUPS_H
70 #define _FOSA_THREAD_GROUPS_H
72 #include "fosa_types.h"
73 #include "fosa_configuration_parameters.h"
78 * @defgroup threadgroups Thread Groups
81 * This module defines the types and functions to manage thread groups
82 * and execution clocks attached to them. These functions are used
83 * for the hierarchical scheduling module of FRSH
91 * fosa_thread_group_create()
93 * Create an empty thread group and return an identifier
95 * This function stores in the variable pointed to by group the
96 * identifier of a thread group that is created by the function.
98 * Returns 0 if successful; otherwise it returns an error code:
99 * FOSA_EAGAIN: no resources are currently available to create the
102 * Alternatively, in case of error the implementation is allowed to
103 * notify it to the system console and then terminate the FRSH
104 * implementation and dependant applications
107 int fosa_thread_group_create(fosa_thread_group_id_t *group);
111 * fosa_thread_group_destroy()
113 * Destroy a thread group
115 * This function destroys the thread group identified by group. The
116 * threads that were in the group are detached from the group. It is
117 * an error to use the identifier after this call. The effects of
118 * using a CPU-time clock associated with the destroyed thread are
121 * Returns 0 if successful; otherwise it returns an error code:
122 * FOSA_EINVAL: group is invalid
124 * Alternatively, in case of error the implementation is allowed to
125 * notify it to the system console and then terminate the FRSH
126 * implementation and dependant applications
129 int fosa_thread_group_destroy(fosa_thread_group_id_t group);
133 * fosa_thread_group_add()
135 * Add a thread to a thread group
137 * This function adds the thread identified with thread_id to the
138 * thread group identified by group.
140 * Returns 0 if successful; otherwise it returns an error code:
141 * FOSA_EINVAL: group is invalid
142 * FOSA_ENOTSUP: thread already a member of some other group
143 * FOSA_EAGAIN: no resources available to add the new thread
144 * FOSA_ESRCH: thread_id doesn't identify a valid thread
146 * Alternatively, in case of error the implementation is allowed to
147 * notify it to the system console and then terminate the FRSH
148 * implementation and dependant applications
151 int fosa_thread_group_add(fosa_thread_group_id_t group,
152 fosa_thread_id_t thread_id);
156 * fosa_thread_group_del()
158 * Delete a thread from a thread group
160 * This function deletes the thread identified with thread_id from
161 * the thread group identified by group.
163 * Returns 0 if successful; otherwise it returns an error code:
164 * FOSA_EINVAL: group is invalid
165 * FOSA_EINVAL: thread is not a member of the group
166 * FOSA_ESRCH: thread_id doesn't identify a valid thread
168 * Alternatively, in case of error the implementation is allowed to
169 * notify it to the system console and then terminate the FRSH
170 * implementation and dependant applications
173 int fosa_thread_group_del(fosa_thread_group_id_t group,
174 fosa_thread_id_t thread_id);
178 * fosa_get_groupcpu_clock()
180 * Get the identifier of a cpu-time clock associated to a thread
183 * This function stores in the variable pointed to by clockid the
184 * identifier of a cpu-time clock for the thread group specified
187 * Returns 0 if successful; otherwise it returns an error code:
188 * FOSA_EINVAL: the group is invalid
189 * FOSA_EINVAL: clock_id is a null pointer
191 * Alternatively, in case of error the implementation is allowed to
192 * notify it to the system console and then terminate the FRSH
193 * implementation and dependant applications
196 int fosa_get_groupcpu_clock(const fosa_thread_group_id_t group,
197 fosa_clock_id_t *clock_id);