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<HTML
><HEAD
><TITLE
>pthread_suspend_np</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.64
"></HEAD
><BODY
CLASS="REFENTRY"
><H1
><A
NAME="AEN1"
>pthread_suspend_np</A
></H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN5"
></A
><H2
>Name</H2
>pthread_suspend_np -- suspend execution of a realtime thread.</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN8"
></A
><H2
>Synopsis</H2
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="SYNOPSIS"
> #include <rtl_sched.h>
int <TT
CLASS="FUNCTION"
>pthread_suspend_np</TT
>(pthread_t <TT
CLASS="PARAMETER"
><I
>thread</I
></TT
>);</PRE
></TD
></TR
></TABLE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN12"
></A
><H2
>DESCRIPTION</H2
><P
>This function is a non-portable Realtime Linux extension. <TT
CLASS="FUNCTION"
>pthread_suspend_np</TT
> suspends the execution of the thread <TT
CLASS="PARAMETER"
><I
>thread</I
></TT
> until a call to <TT
CLASS="FUNCTION"
>pthread_wakeup_np</TT
>. Note: If the target thread is running on a different processer, it is not guaranteed to be suspended immediately. Calls to <TT
CLASS="FUNCTION"
>pthread_suspend_np(pthread_self())</TT
> do work immediately.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN19"
></A
><H2
>RETURN VALUE</H2
><P
>Always returns 0.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN22"
></A
><H2
>NOTES</H2
><P
><TT
CLASS="FUNCTION"
>pthread_suspend_np</TT
> can be called from a signal or interrupt handler, but should be used with some care. RTLinux hard signal handlers (interrupt handlers) execute in the context of whatever thread was running when the interrupt
was accepted by the hardware. If thread "A" was running when an interrupt handler
started and the handler calls <TT
CLASS="FUNCTION"
>pthread_suspend_np</TT
>, then
the scheduler will save thread "A" and run another thread. If you call
<TT
CLASS="FUNCTION"
>pthread_suspend_np</TT
> from an interrupt handler running
in the context of the general purpose operating system thread (Linux), then
all general purpose operations and processes will stop until the thread is
waked.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN28"
></A
><H2
>ERRORS</H2
><P
>None.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN31"
></A
><H2
>AUTHOR</H2
><P
>Michael Barabanov (<A
HREF="mailto:baraban@fsmlabs.com"
TARGET="_top"
>baraban@fsmlabs.com</A
>)</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN35"
></A
><H2
>SEE ALSO</H2
><A
HREF="pthread_wakeup_np.3.html"
TARGET="_top"
>pthread_wakeup_np(3)</A
>, <A
HREF="pthread_make_periodic_np.3.html"
TARGET="_top"
>pthread_make_periodic_np(3)</A
>, <A
HREF="pthread_kill.3.html"
TARGET="_top"
>pthread_make_periodic_np(3)</A
><P
>2001 FSMLabs Inc.</P
><P
>All rights reserved.</P
></DIV
></BODY
></HTML
>
|
