URL
https://opencores.org/ocsvn/openrisc/openrisc/trunk
Subversion Repositories openrisc
[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [doc/] [html/] [ref/] [compat-uitron-task-dependent-synch-functions.html] - Rev 842
Go to most recent revision | Compare with Previous | Blame | View Log
<!-- Copyright (C) 2003 Red Hat, Inc. -->
<!-- This material may be distributed only subject to the terms -->
<!-- and conditions set forth in the Open Publication License, v1.0 -->
<!-- or later (the latest version is presently available at -->
<!-- http://www.opencontent.org/openpub/). -->
<!-- Distribution of the work or derivative of the work in any -->
<!-- standard (paper) book form is prohibited unless prior -->
<!-- permission is obtained from the copyright holder. -->
<HTML
><HEAD
><TITLE
>Task-Dependent Synchronization Functions</TITLE
><meta name="MSSmartTagsPreventParsing" content="TRUE">
<META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
"><LINK
REL="HOME"
TITLE="eCos Reference Manual"
HREF="ecos-ref.html"><LINK
REL="UP"
TITLE="µITRON API"
HREF="compat-uitron-microitron-api.html"><LINK
REL="PREVIOUS"
TITLE="Task Management Functions"
HREF="compat-uitron-task-management-functions.html"><LINK
REL="NEXT"
TITLE=" Synchronization and Communication Functions"
HREF="compat-uitron-sync-and-comm-functions.html"></HEAD
><BODY
CLASS="SECT1"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>eCos Reference Manual</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="compat-uitron-task-management-functions.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
>Chapter 32. µITRON API</TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="compat-uitron-sync-and-comm-functions.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="COMPAT-UITRON-TASK-DEPENDENT-SYNCH-FUNCTIONS">Task-Dependent Synchronization Functions</H1
><P
>These functions are fully supported in this release: </P
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>ER <TT
CLASS="FUNCTION"
>sus_tsk</TT
>(
ID <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>tskid</I
></SPAN
> )</PRE
></TD
></TR
></TABLE
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>ER <TT
CLASS="FUNCTION"
>rsm_tsk</TT
>(
ID <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>tskid</I
></SPAN
> )</PRE
></TD
></TR
></TABLE
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>ER <TT
CLASS="FUNCTION"
>frsm_tsk</TT
>(
ID <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>tskid</I
></SPAN
> )</PRE
></TD
></TR
></TABLE
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>ER <TT
CLASS="FUNCTION"
>slp_tsk</TT
>( void )</PRE
></TD
></TR
></TABLE
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>ER <TT
CLASS="FUNCTION"
>tslp_tsk</TT
>(
TMO <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>tmout</I
></SPAN
> )</PRE
></TD
></TR
></TABLE
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>ER <TT
CLASS="FUNCTION"
>wup_tsk</TT
>(
ID <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>tskid</I
></SPAN
> )</PRE
></TD
></TR
></TABLE
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>ER <TT
CLASS="FUNCTION"
>can_wup</TT
>(
INT *<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>p_wupcnt,</I
></SPAN
> ID <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>tskid</I
></SPAN
> )</PRE
></TD
></TR
></TABLE
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN13571">Error checking</H2
><P
>The following conditions are only checked for, and only return
errors if
<TT
CLASS="LITERAL"
>CYGSEM_UITRON_BAD_PARAMS_RETURN_ERRORS</TT
>
is enabled (see the configuration option “Return Error Codes for Bad
Params”):</P
><P
></P
><UL
><LI
><P
>invalid tskid; less than 1 or greater than
<TT
CLASS="LITERAL"
>CYGNUM_UITRON_TASKS</TT
>
returns E_ID</P
></LI
><LI
><P
><TT
CLASS="FUNCTION"
>wup_tsk()</TT
>
,
<TT
CLASS="FUNCTION"
>sus_tsk()</TT
>
,
<TT
CLASS="FUNCTION"
>rsm_tsk()</TT
>
,
<TT
CLASS="FUNCTION"
>frsm_tsk()</TT
>
on the calling task returns E_OBJ</P
></LI
><LI
><P
>dispatching is enabled in
<TT
CLASS="FUNCTION"
>tslp_tsk()</TT
>
and
<TT
CLASS="FUNCTION"
>slp_tsk()</TT
>
, or E_CTX</P
></LI
><LI
><P
>tmout must be positive, otherwise E_PAR</P
></LI
><LI
><P
>return value pointer in
<TT
CLASS="FUNCTION"
>can_wup()</TT
>
is a valid pointer, or E_PAR</P
></LI
></UL
><P
>The following conditions are checked for, and can
return error codes, regardless of the setting of
<TT
CLASS="LITERAL"
>CYGSEM_UITRON_BAD_PARAMS_RETURN_ERRORS</TT
>:</P
><P
></P
><UL
><LI
><P
>When create and delete functions
<TT
CLASS="FUNCTION"
>cre_tsk()</TT
>
and
<TT
CLASS="FUNCTION"
>del_tsk()</TT
>
are supported, all calls which use a valid task ID number check
that the task exists; if not, E_NOEXS is returned</P
></LI
><LI
><P
><TT
CLASS="FUNCTION"
>sus_tsk()</TT
>
: the task must not be dormant, else E_OBJ</P
></LI
><LI
><P
><TT
CLASS="FUNCTION"
>frsm/rsm_tsk()</TT
>
: the task must be suspended, else E_OBJ</P
></LI
><LI
><P
><TT
CLASS="FUNCTION"
>tslp/slp_tsk()</TT
>
: return codes E_TMOUT, E_RLWAI and E_DLT
are returned depending on the reason for terminating the sleep</P
></LI
><LI
><P
><TT
CLASS="FUNCTION"
>wup_tsk()</TT
>
and
<TT
CLASS="FUNCTION"
>can_wup()</TT
>
: the task must not be dormant, or E_OBJ is returned</P
></LI
></UL
></DIV
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="compat-uitron-task-management-functions.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="ecos-ref.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="compat-uitron-sync-and-comm-functions.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>Task Management Functions</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="compat-uitron-microitron-api.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>Synchronization and Communication Functions</TD
></TR
></TABLE
></DIV
></BODY
></HTML
> Go to most recent revision | Compare with Previous | Blame | View Log