tasks.cdl

eCos1.31版

# ====================================================================
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#      tasks.cdl
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#      uITRON task related configuration data
#
# ====================================================================
#####COPYRIGHTBEGIN####
#                                                                          
# -------------------------------------------                              
# The contents of this file are subject to the Red Hat eCos Public License 
# Version 1.1 (the "License"); you may not use this file except in         
# compliance with the License.  You may obtain a copy of the License at    
# http://www.redhat.com/                                                   
#                                                                          
# Software distributed under the License is distributed on an "AS IS"      
# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the 
# License for the specific language governing rights and limitations under 
# the License.                                                             
#                                                                          
# The Original Code is eCos - Embedded Configurable Operating System,      
# released September 30, 1998.                                             
#                                                                          
# The Initial Developer of the Original Code is Red Hat.                   
# Portions created by Red Hat are                                          
# Copyright (C) 1998, 1999, 2000 Red Hat, Inc.                             
# All Rights Reserved.                                                     
# -------------------------------------------                              
#                                                                          
#####COPYRIGHTEND####
# ====================================================================
######DESCRIPTIONBEGIN####
#
# Author(s):      jskov
# Original data:  hmt
# Contributors:
# Date:           1999-07-07
#
#####DESCRIPTIONEND####
#
# ====================================================================

cdl_option CYGNUM_UITRON_TASKS {
    display       "Number of tasks"
    flavor        data
    legal_values  1 to 65535
    default_value 4
    description   "
        The number of uITRON tasks present in the system.
        Valid task object IDs will range from 1 to this value."
}
cdl_option CYGNUM_UITRON_START_TASKS {
    display       "Start tasks"
    flavor        data
    legal_values  0 to 65535
    default_value 1
    description   "
        The number of uITRON tasks to start automatically.
        Tasks from 1 to this value will be started
        at the beginning of application execution.
        A value of zero here means to start them all.
        Tasks started in this way have a start code of
        zero, as if they were started by sta_tsk(i,0).
        If create and delete operations are supported,
        this number should be no greater than the number
        of tasks created initially."
}
cdl_component CYGPKG_UITRON_TASKS_CREATE_DELETE {
    display       "Support create and delete"
    flavor        bool
    default_value 1
    description   "
        Support task create and delete operations (cre_tsk, del_tsk).
        Otherwise all tasks are created, up to the number specified above."

    cdl_option CYGNUM_UITRON_TASKS_INITIALLY {
        display       "Number of tasks created initially"
        flavor        data
        legal_values  1 to 65535
        default_value 4
        description   "
            The number of uITRON tasks initially created.
            This number should not be more than the number
            of tasks in the system, though setting it to a large
            value to mean 'all' is acceptable.
            Initially, only tasks numbered 1 to this number exist;
            higher numbered ones must be created before use."
    }
}
cdl_option CYGNUM_UITRON_STACK_SIZE {
    display       "Default stack size"
    flavor        data
    legal_values  128 to 0x7FFFFFFF
    default_value 2048
    description   "
        Define a default stack size for uITRON tasks,
        for use in the initialization options below.
        This will be overridden where it is used if the
        architectural HAL requires a minimum stack size
        to handle interrupts correctly."
}
cdl_option CYGDAT_UITRON_TASK_EXTERNS {
    display       "Externs for initialization"
    flavor        data
    default_value {"extern \"C\" void task1( unsigned int ); \\\n\
                    extern \"C\" void task2( unsigned int ); \\\n\
                    extern \"C\" void task3( unsigned int ); \\\n\
                    extern \"C\" void task4( unsigned int ); \\\n\
                    static char stack1[ CYGNUM_UITRON_STACK_SIZE ], \\\n\
                    stack2[ CYGNUM_UITRON_STACK_SIZE ], \\\n\
                    stack3[ CYGNUM_UITRON_STACK_SIZE ], \\\n\
                    stack4[ CYGNUM_UITRON_STACK_SIZE ];"}
    description   "
        Task initializers may refer to external objects
        such as memory for stack or functions to call.
        Use this option to define or declare any external
        objects needed by the task static initializer below.
        Example: create some memory for a stack using
        'static char stack1\[CYGNUM_UITRON_STACK_SIZE\];'
        to set up a chunk of memory of the default stack size.
        Note: this option is invoked in the 'outermost' context
        of C++ source, where global/static objects are created;
        it should contain valid, self-contained, C++ source."
}
cdl_option CYGDAT_UITRON_TASK_INITIALIZERS {
    display       "Static initializers"
    flavor        data
    default_value {"CYG_UIT_TASK( \"t1\", 1, task1, &stack1, CYGNUM_UITRON_STACK_SIZE ), \\\n\
                    CYG_UIT_TASK( \"t2\", 2, task2, &stack2, CYGNUM_UITRON_STACK_SIZE ), \\\n\
                    CYG_UIT_TASK( \"t3\", 3, task3, &stack3, CYGNUM_UITRON_STACK_SIZE ), \\\n\
                    CYG_UIT_TASK( \"t4\", 4, task4, &stack4, CYGNUM_UITRON_STACK_SIZE ),"}
    description   "
        Tasks must be statically
        initialized: enter a list of initializers
        separated by commas, one per line.
        An initializer is
        'CYG_UIT_TASK(NAME,PRIO,FUNC,STACK,SIZE)'
        where name is a quoted string to name the task,
        prio is the initial priority of the task,
        func is the name of the entry point,
        stack is the address of the task's stack,
        and size is the size of the task's stack.
        When create and delete operations are supported,
        'CYG_UIT_TASK_NOEXS(NAME,STACK,SIZE)' should be
        used for tasks which are not initially created,
        in order to tell the system what memory to use
        for stacks when these tasks are created later on.
        Using 'CYGNUM_UITRON_STACK_SIZE' for size
        is recommended, to use the option defined above,
        so long as that truly is the size of your stack(s).
        Note: this option is invoked in the context of a
        C++ array initializer, between curly brackets.
        Ensure that the number of initializers here exactly
        matches the number of tasks specified."
}