In order to kill process trees we need to list all processes to find
those whose parent we are killing.  We implement process listing on
OpenSolaris by using "ps -ef" and parsing the resulting format:

     UID   PID  PPID   C    STIME TTY         TIME CMD
     %*s    %d    %d   %*[^\n]\n

In order to kill process trees we need to list all processes to find
those whose parent we are killing.  We implement process listing on QNX
using "ps -Af" and parsing the resulting format:

  UID        PID       PPID  C STIME TTY          TIME CMD
  %*d         %d         %d  %*[^\n]\n

We enumerate processes to identify those whose parent is being killed so
that we can recursively kill the children.  Enumeration uses the
Process32(First|Next) windows API functions, which accept PROCESSENTRY32
objects to be filled.  This commit corrects the declaration of the entry
structure to account for its size on 64-bit Windows.

On UNIX systems we kill a tree of processes by performing a DFS walk of
the tree.  We send SIGSTOP to each process encountered, recursively
handle its children, and then send SIGKILL.

We once used the above approach in the past, but it was removed by the
commit "Do not send both SIGSTOP and SIGKILL when killing a process".
The commit was meant to work-around an OS X 10.3 bug in which the child
would not always honor SIGKILL after SIGSTOP.  At the time we wrongly
assumed that the process tree remains intact after SIGKILL and before
the child is reaped.  In fact the grandchildren may be re-parented to
ppid=1 even before the child is reaped, which causes the DFS walk to
miss them.

Mac has gettimeofday defined, but cmsys wasn't aware of that, so it was falling back to using time() which only provides second resolution.  Fixed to allow usec res.

We suppress Intel warning 1572 because the cases where we do equality
tests are valid.  Since this project does not do numerical computations
we need not worry about real instances against which this warning
protects.

Under -O3 optimization this compiler breaks our testProcess.c source file.
We force -O0 for the file to avoid the problem.

The commit "Enable loose loop constructs in KWSys" set the minimum
required CMake version to 2.4.5.  This regressed the setting of CMP0003,
so we restore it in this commit.

The FundamentalType header needs to know type sizes at preprocessing
time.  This commit teaches it to avoid using CHECK_TYPE_SIZE because the
macro does not work for types whose size varies across architectuers in
Mac OS X universal binaries.  Fortunately the Mac compilers provide just
enough information to detect the needed type sizes during preprocessing.

We now use preprocessor macros instead of configuration tests whenever
they are available.  As a side effect this reduces the number of
try-compiles needed with GCC.

See issue #9913.

This macro helps KWSys perform try-compile tests that extract 'INFO'
strings out of compiled binaries.  It works for CMake 2.6 and above.
On CMake 2.4 it always returns an empty list of information values,
so this should be used only as an optimization until 2.6 is required.

In KWSys IOStream we need to detect whether 'long long' exists but we do
not need its size.  We avoid using CHECK_TYPE_SIZE because it does not
work for types whose size varies across architectuers in Mac OS X
universal binaries.  See issue #9913.

We set CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS in KWSys's CMakeLists.txt file
to enable simpler endif() syntax for CMake 2.4.

Fix bogus calls to GetMemoryStatus and GetMemoryStatusEx: need to set the dwLength member of the struct prior to calling. Otherwise it's just a garbage value from the stack. Also, pay attention to return value of GetMemoryStatusEx: if it indicates failure then just return 0 without using any of the other data the call returns.

      were changed from "unsigned long" to "size_t" to solve warnings about
      64 bits to 32 bits truncations.

      truncate 64 bits types into 32 bits types.

Alex

Better fix for crash on Windows. This time it will even work on Linux, too. That GetLineFromStream method while loop sure is fussy.

Fix crash on Windows. If input stream is no good, do not try to read a line from it. Return false and an empty line instead...

Fix warnings in CMake source code. Suppress warnings in Lexer and Parser files that are 'too hard' to fix.

This converts the KWSys license to a pure 3-clause OSI-approved BSD
License.  We drop the previous license clause requiring modified
versions to be plainly marked.  We also update the KWSys copyright to
cover the full development time range.

This commit adds KWSys configuration option KWSYS_INSTALL_DOC_DIR to
specify the directory for installation of documentation.  We use it to
put the KWSys Copyright.txt file at the location

  ${KWSYS_INSTALL_DOC_DIR}/${KWSYS_NAMESPACE}/Copyright.txt

in the project installation tree.  This helps containing projects meet
the license requirement to distribute the copyright and license with
binary forms.

We replace the test text in the kwsys.testEncode test to avoid the word
'Copyright'.  This simplifies grep results for Copyright verification.

The commit "Fix KWSys SystemTools build on cygwin with -mwin32" tried to
restore the state of the _WIN32 definition that was broken by the commit
"Optimize KWSys SystemTools::FileExists on Windows".  It did so for the
case of building with -mwin32 on cygwin, but since including <windows.h>
defines _WIN32, it failed for the case of not using -mwin32.

This commit restores the state of _WIN32 in all cases by undefining it
after including <windows.h> if it was not defined beforehand.

Commit "Optimize KWSys SystemTools::FileExists on Windows" accidentally
added "#undef _WIN32" when including <windows.h> on cygwin, which breaks
builds using the -mwin32 flag.  This commit removes that line and fixes
the real error it was intended to avoid.

Put a flag in that will stop system tools from deleting system environment memory on exit, as it can cause gcov to crash the programs.

We optimize this method by using the GetFileAttributesExA native Windows
API to check for file existence when possible.  For real Windows builds
we always use it.  For Cygwin we use cygwin_conv_to_win32_path to get a
native Windows path if possible and otherwise fall back to 'access'.

Cygwin-to-Windows path conversion and cache by Wojciech Migda.
See issue #8826.

Fix for Bug #9190, -U did not work on case insensitive file systems because of call to glob convert to regex that expected to work with files.

KWSys tries not to force anything on source files that include its
headers, but Borland warning 8027 leaves us no choice when we want to
have inline function definitions.  This commit disables the warning for
the RegularExpression header and any file that includes it.

The 'binary' openmode does not exist on all compilers.  We define macro
<kwsys>_ios_binary, where <kwsys> is the KWSys namespace, to refer to
std::ios::binary if it exists and 0 otherwise.  Sample usage:

  kwsys_ios::ifstream fin(fn, kwsys_ios::ios::in | kwsys_ios_binary);

Some AIX/gcc version combinations the <cstdio> header breaks when large
file support is enabled.  See this GCC issue for details:

  http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20366

We work around the problem by enhancing the configuration check for
large file support to include <cstdio> when available.  This will cause
LFS to be disabled when the above problem occurs.

ENH: try and see if using string.append instead of += will make valgrind not complaing that JoinPath is leaking.