<div dir="ltr">Hello Joel,<div>I had sent a v3 patch <a href="https://lists.rtems.org/pipermail/devel/2020-April/059603.html">https://lists.rtems.org/pipermail/devel/2020-April/059603.html</a>, but it somehow went unnoticed. This may need a bit of fine-tuning, and I plan to pursue it after my GSoC ends (I have too many things on my plate right now :))</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Aug 13, 2020 at 3:46 AM Joel Sherrill <<a href="mailto:joel@rtems.org">joel@rtems.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">What's the status of this test? The last email seems to indicate it needed further work before being merged.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Apr 15, 2020 at 9:16 AM Joel Sherrill <<a href="mailto:joel@rtems.org" target="_blank">joel@rtems.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Apr 15, 2020 at 9:11 AM Gedare Bloom <<a href="mailto:gedare@rtems.org" target="_blank">gedare@rtems.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On Tue, Apr 14, 2020 at 10:56 PM Sebastian Huber<br>
<<a href="mailto:sebastian.huber@embedded-brains.de" target="_blank">sebastian.huber@embedded-brains.de</a>> wrote:<br>
><br>
> Hello Utkarsh Rai,<br>
><br>
> do we really need a new test program for this test case? I would prefer<br>
> add it to an existing test program or add a generic POSIX test program<br>
> using the RTEMS Test Framework.<br>
><br>
I would also recommend this, or perhaps develop a test for clock<br>
monotonic that encompasses several features (as done with clock<br>
realtime).<br></blockquote><div><br></div><div>In theory, the clock monotonic test could be the clock realtime one reused </div><div>with the clock type changed. There are a few cases of doing something similar.</div><div>The behavior is supposed to be the same for delays.</div><div><br></div><div>Missing in this discussion and maybe what Gedare is hinting at is that you</div><div>any sleep/delay/etc type of operation is never specified as a precise delay,</div><div>it is a minimum delay. The minimum may be set by clock tick time quantum,</div><div>other threads, processes, etc. The POSIX standard has precise language </div><div>about this for clock_nanosleep. From <a href="https://pubs.opengroup.org/onlinepubs/9699919799/functions/clock_nanosleep.html" target="_blank">https://pubs.opengroup.org/onlinepubs/9699919799/functions/clock_nanosleep.html</a></div><div> </div><div>"The suspension time caused by this function may be longer than requested because the argument value is rounded up to an integer multiple of the sleep resolution, or because of the scheduling of other activity by the system."</div><div><br></div><div>--joel</div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<br>
> On 14/04/2020 19:17, Utkarsh Rai wrote:<br>
> > This test checks for a simple 1 ns delay with clock_nanosleep with<br>
> > CLOCK_MONOTONIC.<br>
> > ---<br>
> > testsuites/psxtests/Makefile.am | 9 +++<br>
> > testsuites/psxtests/<a href="http://configure.ac" rel="noreferrer" target="_blank">configure.ac</a> | 1 +<br>
> > .../psxtests/psxclocknanosleep01/init.c | 81 +++++++++++++++++++<br>
> > .../psxclocknanosleep01.doc | 10 +++<br>
> > .../psxclocknanosleep01.scn | 3 +<br>
> > 5 files changed, 104 insertions(+)<br>
> > create mode 100644 testsuites/psxtests/psxclocknanosleep01/init.c<br>
> > create mode 100644 testsuites/psxtests/psxclocknanosleep01/psxclocknanosleep01.doc<br>
> > create mode 100644 testsuites/psxtests/psxclocknanosleep01/psxclocknanosleep01.scn<br>
> ><br>
> > diff --git a/testsuites/psxtests/Makefile.am b/testsuites/psxtests/Makefile.am<br>
> > index 1f9e4233ec..e3918ae7a5 100755<br>
> > --- a/testsuites/psxtests/Makefile.am<br>
> > +++ b/testsuites/psxtests/Makefile.am<br>
> > @@ -321,6 +321,15 @@ psxclockrealtime01_CPPFLAGS = $(AM_CPPFLAGS) \<br>
> > $(TEST_FLAGS_psxclockrealtime01) $(support_includes)<br>
> > endif<br>
> ><br>
> > +if TEST_psxclocknanosleep01<br>
> > +psx_tests += psxclocknanosleep01<br>
> > +psx_screens += psxclocknanosleep01/psxclocknanosleep01.scn<br>
> > +psx_docs += psxclocknanosleep01/psxclocknanosleep01.doc<br>
> > +psxclocknanosleep01_SOURCES = psxclocknanosleep01/init.c<br>
> > +psxclocknanosleep01_CPPFLAGS = $(AM_CPPFLAGS) \<br>
> > + $(TEST_FLAGS_psxclocknanosleep01) $(support_includes)<br>
> > +endif<br>
> > +<br>
> > if TEST_psxconcurrency01<br>
> > psx_tests += psxconcurrency01<br>
> > psx_screens += psxconcurrency01/psxconcurrency01.scn<br>
> > diff --git a/testsuites/psxtests/<a href="http://configure.ac" rel="noreferrer" target="_blank">configure.ac</a> b/testsuites/psxtests/<a href="http://configure.ac" rel="noreferrer" target="_blank">configure.ac</a><br>
> > index 139787cccb..9bfe8e2c0b 100644<br>
> > --- a/testsuites/psxtests/<a href="http://configure.ac" rel="noreferrer" target="_blank">configure.ac</a><br>
> > +++ b/testsuites/psxtests/<a href="http://configure.ac" rel="noreferrer" target="_blank">configure.ac</a><br>
> > @@ -75,6 +75,7 @@ RTEMS_TEST_CHECK([psxcleanup01])<br>
> > RTEMS_TEST_CHECK([psxcleanup02])<br>
> > RTEMS_TEST_CHECK([psxclock])<br>
> > RTEMS_TEST_CHECK([psxclock01])<br>
> > +RTEMS_TEST_CHECK([psxclocknanosleep01])<br>
> > RTEMS_TEST_CHECK([psxclockrealtime01])<br>
> > RTEMS_TEST_CHECK([psxconcurrency01])<br>
> > RTEMS_TEST_CHECK([psxcond01])<br>
> > diff --git a/testsuites/psxtests/psxclocknanosleep01/init.c b/testsuites/psxtests/psxclocknanosleep01/init.c<br>
> > new file mode 100644<br>
> > index 0000000000..21b738627d<br>
> > --- /dev/null<br>
> > +++ b/testsuites/psxtests/psxclocknanosleep01/init.c<br>
> > @@ -0,0 +1,81 @@<br>
> > +/*<br>
> > + * SPDX-License-Identifier: BSD-2-Clause<br>
> > + *<br>
> > + * Copyright (C) 2020 Utkarsh Rai<br>
> > + *<br>
> > + * Redistribution and use in source and binary forms, with or without<br>
> > + * modification, are permitted provided that the following conditions<br>
> > + * are met:<br>
> > + * 1. Redistributions of source code must retain the above copyright<br>
> > + * notice, this list of conditions and the following disclaimer.<br>
> > + * 2. Redistributions in binary form must reproduce the above copyright<br>
> > + * notice, this list of conditions and the following disclaimer in the<br>
> > + * documentation and/or other materials provided with the distribution.<br>
> > + *<br>
> > + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"<br>
> > + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE<br>
> > + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE<br>
> > + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE<br>
> > + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR<br>
> > + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF<br>
> > + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS<br>
> > + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN<br>
> > + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)<br>
> > + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE<br>
> > + * POSSIBILITY OF SUCH DAMAGE.<br>
> > + */<br>
> > +<br>
> > +#include <rtems.h><br>
> > +#include <rtems/test.h><br>
> > +#include <time.h><br>
> > +#include <tmacros.h><br>
> > +<br>
> > +/*Forward declaration to avoid compiler warning*/<br>
> > +void clock_sleep(void);<br>
> Please use a static function instead. Most of these forward declarations<br>
> are just lazy warning fixes and bad examples.<br>
> > +<br>
> > +rtems_task Init(rtems_task_argument ignored);<br>
> > +<br>
> > +const char rtems_test_name[] = "PSXCLOCKNANOSLEEP 01";<br>
> > +<br>
> > +void clock_sleep(void)<br>
> > +{<br>
> > + struct timespec delay_time;<br>
> > + int status;<br>
> > +<br>
> > + delay_time.tv_sec = 0;<br>
> > + delay_time.tv_nsec = 1;<br>
> > +<br>
> > + status=clock_nanosleep( CLOCK_MONOTONIC, 0, &delay_time, (struct timespec* )NULL );<br>
> In C code this cast is superfluous, in C++ code using NULL is out dated.<br>
> > + rtems_test_assert( status == 0 );<br>
> > +}<br>
> > +<br>
> > +rtems_task Init(rtems_task_argument ignored)<br>
> > +{<br>
> > +<br>
> > + struct timespec init_time;<br>
> > + struct timespec end_time;<br>
> > + int status;<br>
> > +<br>
> > + TEST_BEGIN();<br>
> > +<br>
> > + status = clock_gettime( CLOCK_MONOTONIC, &init_time );<br>
> > + rtems_test_assert( status == 0 );<br>
> > +<br>
> > + clock_sleep();<br>
> > +<br>
> > + status = clock_gettime( CLOCK_MONOTONIC, &end_time );<br>
> > + rtems_test_assert( status == 0 );<br>
> > +<br>
> > + rtems_test_assert( (end_time.tv_sec-init_time.tv_sec) == 0 );<br>
><br>
> Is end_time.tv_sec - init_time.tv_sec == 0 under all circumstances?<br>
><br>
> The test case code should be separated from the test suite boilerplate code.<br>
><br>
> > + rtems_test_assert( (end_time.tv_nsec-init_time.tv_nsec) >=1 );<br>
> We really should think about using a C code formatter. I think that I<br>
> waste my time telling someone to put spaces between operators.<br>
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</blockquote></div></div>
</blockquote></div>
</blockquote></div>