The previous code did not count the number of virtual processors across
physical processors on SunOS.
Can handle the following situations:
```
$ uname -a
SunOS solaris 5.11 11.4.0.15.0 i86pc i386 i86pc
$ psrinfo -p -v
The physical processor has 1 virtual processor (0)
x86 (GenuineIntel 306D2 family 6 model 61 step 2 clock 3492 MHz)
Intel Core Processor (Broadwell)
The physical processor has 1 virtual processor (1)
x86 (GenuineIntel 306D2 family 6 model 61 step 2 clock 3492 MHz)
Intel Core Processor (Broadwell)
The physical processor has 1 virtual processor (2)
x86 (GenuineIntel 306D2 family 6 model 61 step 2 clock 3492 MHz)
Intel Core Processor (Broadwell)
The physical processor has 1 virtual processor (3)
x86 (GenuineIntel 306D2 family 6 model 61 step 2 clock 3492 MHz)
Intel Core Processor (Broadwell)
```
```
$ uname -a
SunOS sol11x86 5.11 11.0 i86pc i386 i86pc
$ psrinfo -p -v
The physical processor has 2 virtual processors (0 1)
x86 (GenuineIntel 50650 family 6 model 85 step 0 clock 2000 MHz)
Intel(r) Xeon(r) Gold 6138 CPU @ 2.00GHz
```
```
$ uname -a
SunOS sol11 5.11 11.0 sun4v sparc sun4v
$ psrinfo -p -v
The physical processor has 2 cores and 16 virtual processors (0-15)
The core has 8 virtual processors (0-7)
The core has 8 virtual processors (8-15)
SPARC-T4 (chipid 0, clock 2848 MHz)
```
On Linux containers (tested with LXC and Docker) getconf returns the
host CPU count.
Use nproc with a higher priority if available to get the container's
allocated CPUs instead of the non-accessible host count.
Per-source copyright/license notice headers that spell out copyright holder
names and years are hard to maintain and often out-of-date or plain wrong.
Precise contributor information is already maintained automatically by the
version control tool. Ultimately it is the receiver of a file who is
responsible for determining its licensing status, and per-source notices are
merely a convenience. Therefore it is simpler and more accurate for
each source to have a generic notice of the license name and references to
more detailed information on copyright holders and full license terms.
Our `Copyright.txt` file now contains a list of Contributors whose names
appeared source-level copyright notices. It also references version control
history for more precise information. Therefore we no longer need to spell
out the list of Contributors in each source file notice.
Replace CMake per-source copyright/license notice headers with a short
description of the license and links to `Copyright.txt` and online information
available from "https://cmake.org/licensing". The online URL also handles
cases of modules being copied out of our source into other projects, so we
can drop our notices about replacing links with full license text.
Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority
of the replacements mechanically. Manually fix up shebang lines and trailing
newlines in a few files. Manually update the notices in a few files that the
script does not handle.
Also, comment out all "debugging" calls to message() that helped
us interpret the output on other platforms when running on the
dashboard clients.
Using ERROR_QUIET avoids unnecessary stderr output while calling
external tools to determine the processor count. If there's an
error parsing the output, we set the count to 0 anyhow.
Also, the test will fail on a CMake dashboard run if the count
comes back equal to 0.
Now that the code is "done"-ish, remove the debugging output.
Expect no output on stdout or stderr when calling the
ProcessorCount function from now on.
Also, add message output (temporarily) for gathering data
on all the dashboard machines. After the test runs on the
overnight dashboards tonight, I'll comment out the message
output and commit/push again.
Credit goes to David Cole ( http://www.kitware.com/blog/home/post/63 ).
Also add a script-based test of the new module.
Signed-off-by: Michael Wild <themiwi@users.sourceforge.net>
