# ====================================================================
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# ====================================================================
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#
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#
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# synch.cdl
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# synch.cdl
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#
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#
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# configuration data related to the kernel synchronization primitives
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# configuration data related to the kernel synchronization primitives
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#
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#
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# ====================================================================
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# ====================================================================
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#####ECOSGPLCOPYRIGHTBEGIN####
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#####ECOSGPLCOPYRIGHTBEGIN####
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## -------------------------------------------
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## -------------------------------------------
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## This file is part of eCos, the Embedded Configurable Operating System.
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## This file is part of eCos, the Embedded Configurable Operating System.
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## Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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## Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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##
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##
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## eCos is free software; you can redistribute it and/or modify it under
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## eCos is free software; you can redistribute it and/or modify it under
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## the terms of the GNU General Public License as published by the Free
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## the terms of the GNU General Public License as published by the Free
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## Software Foundation; either version 2 or (at your option) any later version.
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## Software Foundation; either version 2 or (at your option) any later version.
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##
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##
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## eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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## eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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## WARRANTY; without even the implied warranty of MERCHANTABILITY or
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## WARRANTY; without even the implied warranty of MERCHANTABILITY or
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## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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## for more details.
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## for more details.
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##
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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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## You should have received a copy of the GNU General Public License along
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## with eCos; if not, write to the Free Software Foundation, Inc.,
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## with eCos; if not, write to the Free Software Foundation, Inc.,
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## 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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## 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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##
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##
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## As a special exception, if other files instantiate templates or use macros
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## As a special exception, if other files instantiate templates or use macros
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## or inline functions from this file, or you compile this file and link it
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## or inline functions from this file, or you compile this file and link it
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## with other works to produce a work based on this file, this file does not
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## with other works to produce a work based on this file, this file does not
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## by itself cause the resulting work to be covered by the GNU General Public
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## by itself cause the resulting work to be covered by the GNU General Public
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## License. However the source code for this file must still be made available
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## License. However the source code for this file must still be made available
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## in accordance with section (3) of the GNU General Public License.
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## in accordance with section (3) of the GNU General Public License.
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##
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##
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## This exception does not invalidate any other reasons why a work based on
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## This exception does not invalidate any other reasons why a work based on
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## this file might be covered by the GNU General Public License.
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## this file might be covered by the GNU General Public License.
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##
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##
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## Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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## Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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## at http://sources.redhat.com/ecos/ecos-license/
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## at http://sources.redhat.com/ecos/ecos-license/
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## -------------------------------------------
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## -------------------------------------------
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#####ECOSGPLCOPYRIGHTEND####
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#####ECOSGPLCOPYRIGHTEND####
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# ====================================================================
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# ====================================================================
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######DESCRIPTIONBEGIN####
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######DESCRIPTIONBEGIN####
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#
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#
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# Author(s): jskov
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# Author(s): jskov
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# Original data: nickg
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# Original data: nickg
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# Contributors:
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# Contributors:
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# Date: 1999-07-05
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# Date: 1999-07-05
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#
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#
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#####DESCRIPTIONEND####
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#####DESCRIPTIONEND####
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#
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#
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# ====================================================================
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# ====================================================================
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cdl_component CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL {
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cdl_component CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL {
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display "Priority inversion protection protocols"
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display "Priority inversion protection protocols"
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flavor booldata
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flavor booldata
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doc ref/kernel-mutexes.html
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doc ref/kernel-mutexes.html
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legal_values { "SIMPLE" }
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legal_values { "SIMPLE" }
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default_value { "SIMPLE" }
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default_value { "SIMPLE" }
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active_if { CYGSEM_KERNEL_SCHED_MLQUEUE }
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active_if { CYGSEM_KERNEL_SCHED_MLQUEUE }
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requires { CYGINT_KERNEL_SCHEDULER_UNIQUE_PRIORITIES == 0 }
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requires { CYGINT_KERNEL_SCHEDULER_UNIQUE_PRIORITIES == 0 }
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description "
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description "
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This component controls the protocols used to protect mutexes against
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This component controls the protocols used to protect mutexes against
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priority inversion. If this option is enabled it defines which
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priority inversion. If this option is enabled it defines which
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algorithm is used to implement this protection. At present only
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algorithm is used to implement this protection. At present only
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one such algorithm is defined: \"SIMPLE\". The implementation
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one such algorithm is defined: \"SIMPLE\". The implementation
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will only work in the mlqueue scheduler, and it does not handle the
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will only work in the mlqueue scheduler, and it does not handle the
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rare case of nested mutexes completely correctly. However it is
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rare case of nested mutexes completely correctly. However it is
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both fast and deterministic."
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both fast and deterministic."
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cdl_option CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_INHERIT {
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cdl_option CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_INHERIT {
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display "Enable priority inheritance protocol"
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display "Enable priority inheritance protocol"
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default_value 1
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default_value 1
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implements CYGINT_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_COUNT
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implements CYGINT_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_COUNT
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description "
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description "
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This option enables priority inheritance protocol. This protocol
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This option enables priority inheritance protocol. This protocol
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causes the owner of a mutex to be executed at the highest priority
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causes the owner of a mutex to be executed at the highest priority
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of the threads waiting for access to the mutex."
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of the threads waiting for access to the mutex."
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}
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}
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cdl_component CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_CEILING {
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cdl_component CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_CEILING {
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display "Enable priority ceiling protocol"
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display "Enable priority ceiling protocol"
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default_value 1
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default_value 1
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implements CYGINT_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_COUNT
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implements CYGINT_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_COUNT
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description "
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description "
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This option enables priority ceiling protocol. This protocol
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This option enables priority ceiling protocol. This protocol
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causes the owner of a mutex to be executed at a priority
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causes the owner of a mutex to be executed at a priority
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associated with the mutex."
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associated with the mutex."
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cdl_option CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_DEFAULT_PRIORITY {
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cdl_option CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_DEFAULT_PRIORITY {
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display "Default priority ceiling"
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display "Default priority ceiling"
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flavor data
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flavor data
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legal_values 0 to { CYGNUM_KERNEL_SCHED_PRIORITIES - 1 }
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legal_values 0 to { CYGNUM_KERNEL_SCHED_PRIORITIES - 1 }
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default_value 0
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default_value 0
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active_if CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_CEILING
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active_if CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_CEILING
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description "
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description "
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This option defines the default priority ceiling to be
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This option defines the default priority ceiling to be
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used if the chosen default priority inversion protocol is
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used if the chosen default priority inversion protocol is
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priority ceoptioniling protocol. The default value for this is zero,
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priority ceoptioniling protocol. The default value for this is zero,
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making all such mutexes boost threads to the maximum priority."
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making all such mutexes boost threads to the maximum priority."
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}
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}
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}
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}
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cdl_option CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_NONE {
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cdl_option CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_NONE {
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display "No priority inversion protocol"
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display "No priority inversion protocol"
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default_value 1
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default_value 1
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implements CYGINT_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_COUNT
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implements CYGINT_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_COUNT
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description "
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description "
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This option enables the ability to have no priority inversion protocol.
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This option enables the ability to have no priority inversion protocol.
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It is equivalent to disabling the priority inversion protocol at
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It is equivalent to disabling the priority inversion protocol at
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the top level, but is necessary for the runtime and default
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the top level, but is necessary for the runtime and default
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selection options."
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selection options."
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}
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}
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cdl_option CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_DEFAULT {
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cdl_option CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_DEFAULT {
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display "Default priority inversion protocol"
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display "Default priority inversion protocol"
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flavor data
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flavor data
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active_if { CYGINT_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_COUNT > 1 }
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active_if { CYGINT_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_COUNT > 1 }
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legal_values { "INHERIT" "CEILING" "NONE" }
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legal_values { "INHERIT" "CEILING" "NONE" }
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default_value { CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_INHERIT ?
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default_value { CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_INHERIT ?
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"INHERIT" :
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"INHERIT" :
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CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_CEILING ?
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CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_CEILING ?
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"CEILING" : "NONE" }
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"CEILING" : "NONE" }
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description "
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description "
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This option defines the default inversion protocol used for mutexes that
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This option defines the default inversion protocol used for mutexes that
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are created without an explicit protocol being specified. The protocol
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are created without an explicit protocol being specified. The protocol
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chosen by default is to use priority inheritance if it is present otherwise
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chosen by default is to use priority inheritance if it is present otherwise
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priority ceiling, or none if neither is present."
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priority ceiling, or none if neither is present."
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}
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}
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cdl_option CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_DYNAMIC {
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cdl_option CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_DYNAMIC {
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display "Specify mutex priority inversion protocol at runtime"
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display "Specify mutex priority inversion protocol at runtime"
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default_value 1
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default_value 1
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active_if { CYGINT_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_COUNT > 1 }
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active_if { CYGINT_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_COUNT > 1 }
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description "
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description "
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This option controls whether the priority inversion protocol used by
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This option controls whether the priority inversion protocol used by
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a mutex can be specified when that mutex is created."
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a mutex can be specified when that mutex is created."
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}
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}
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cdl_interface CYGINT_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_COUNT {
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cdl_interface CYGINT_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_COUNT {
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display "Number of protocols selected"
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display "Number of protocols selected"
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}
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}
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}
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}
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cdl_option CYGMFN_KERNEL_SYNCH_MBOXT_PUT_CAN_WAIT {
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cdl_option CYGMFN_KERNEL_SYNCH_MBOXT_PUT_CAN_WAIT {
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display "Message box blocking put support"
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display "Message box blocking put support"
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doc ref/kernel-mail-boxes.html
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doc ref/kernel-mail-boxes.html
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default_value 1
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default_value 1
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description "
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description "
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Message boxes can support three different versions of the
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Message boxes can support three different versions of the
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put-message operation. The first is tryput(), which will fail
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put-message operation. The first is tryput(), which will fail
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if the message box is already full. The other two are the
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if the message box is already full. The other two are the
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ordinary put() function which will block if the message box
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ordinary put() function which will block if the message box
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is full, and a timed put() operation which will block for
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is full, and a timed put() operation which will block for
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upto a certain length of time if the message box is currently
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upto a certain length of time if the message box is currently
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full. The blocking versions require extra memory in the
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full. The blocking versions require extra memory in the
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message box data structure and extra code in the other
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message box data structure and extra code in the other
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message box functions, so they can be disabled if the
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message box functions, so they can be disabled if the
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application does not require them. If this option is enabled
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application does not require them. If this option is enabled
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then the system will always provide the blocking put()
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then the system will always provide the blocking put()
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function, and it will also provide the timed put() function
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function, and it will also provide the timed put() function
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if thread timers are enabled."
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if thread timers are enabled."
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}
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}
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cdl_option CYGNUM_KERNEL_SYNCH_MBOX_QUEUE_SIZE {
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cdl_option CYGNUM_KERNEL_SYNCH_MBOX_QUEUE_SIZE {
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display "Message box queue size"
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display "Message box queue size"
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doc ref/kernel-mail-boxes.html
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doc ref/kernel-mail-boxes.html
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flavor data
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flavor data
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legal_values 1 to 65535
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legal_values 1 to 65535
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default_value 10
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default_value 10
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description "
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description "
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This configuration option controls the number of messages
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This configuration option controls the number of messages
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that can be queued in a message box before a non-blocking
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that can be queued in a message box before a non-blocking
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put() operation will fail or a blocking put() operation will
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put() operation will fail or a blocking put() operation will
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block. The cost in memory is one pointer per message box for
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block. The cost in memory is one pointer per message box for
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each possible message."
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each possible message."
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}
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}
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cdl_option CYGMFN_KERNEL_SYNCH_CONDVAR_TIMED_WAIT {
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cdl_option CYGMFN_KERNEL_SYNCH_CONDVAR_TIMED_WAIT {
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display "Condition variable timed-wait support"
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display "Condition variable timed-wait support"
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doc ref/kernel-condition-variables.html
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doc ref/kernel-condition-variables.html
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requires CYGFUN_KERNEL_THREADS_TIMER
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requires CYGFUN_KERNEL_THREADS_TIMER
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default_value 1
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default_value 1
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description "
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description "
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This option enables the condition variable timed wait
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This option enables the condition variable timed wait
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facility."
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facility."
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}
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}
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cdl_option CYGMFN_KERNEL_SYNCH_CONDVAR_WAIT_MUTEX {
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cdl_option CYGMFN_KERNEL_SYNCH_CONDVAR_WAIT_MUTEX {
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display "Condition variable explicit mutex wait support"
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display "Condition variable explicit mutex wait support"
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doc ref/kernel-condition-variables.html
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doc ref/kernel-condition-variables.html
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default_value 1
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default_value 1
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description "
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description "
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This option enables the condition variable explicit mutex wait
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This option enables the condition variable explicit mutex wait
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facility. By default condition variables in eCos are created with
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facility. By default condition variables in eCos are created with
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a statically associated mutex. This option permits wait (and timed wait
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a statically associated mutex. This option permits wait (and timed wait
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if CYGMFN_KERNEL_SYNCH_CONDVAR_TIMED_WAIT is enabled) to provide a
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if CYGMFN_KERNEL_SYNCH_CONDVAR_TIMED_WAIT is enabled) to provide a
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different mutex as an argument. This makes no difference to the semantics
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different mutex as an argument. This makes no difference to the semantics
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the wait operation except that a different mutex will be used during it."
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the wait operation except that a different mutex will be used during it."
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}
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}
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cdl_option CYGIMP_KERNEL_SYNCH_MQUEUE_NOT_INLINE {
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cdl_option CYGIMP_KERNEL_SYNCH_MQUEUE_NOT_INLINE {
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display "Avoid inlines in mqueue implementation"
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display "Avoid inlines in mqueue implementation"
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default_value 0
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default_value 0
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description "
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description "
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With this option disabled, the 'mqueue' message queue implementation
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With this option disabled, the 'mqueue' message queue implementation
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provides most of its implementation via inlines. However this can
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provides most of its implementation via inlines. However this can
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adversely affect code size in application that make lots of mqueue
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adversely affect code size in application that make lots of mqueue
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calls from different places, so enabling this option provides
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calls from different places, so enabling this option provides
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non-inline versions to be used instead."
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non-inline versions to be used instead."
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compile sync/mqueue.cxx
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compile sync/mqueue.cxx
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}
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}
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# EOF synch.cdl
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# EOF synch.cdl
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