metar fetcher. Effectively this caused the metar thread and the main
thread to both attempt to fetch weather data. This could lead to long pauses
when the main thread decided to fetch the weather, and introduced a race
condition that could cause a segfault/crash.
Investigating this issue, I discovered that even longer ago, someone confused
#defines and #ifdef symbols with C/C++ variables. If I #define XYZ 0 it is
defined so #ifdef XYZ is true, not false like a variable. Our thread
detection made this mistake and there were follow up patches to work around
it.
So I fixed the configure script (ahhh, reading the autoconf manual is highly
recommended excercise for people editing the configure.ac file.) I also
discovered that we were hardwiring with_threads=yes with no way via configure
options to disable threads from the build so I fixed that.
Then I patched up the #ifdef's scattered through the code to match the
configure script changes, oh and by the way, I stumbled upon a past typo
that led to the race condition in the metar fetching thread and fixed that.
Here's a fix for a bug I introduced when I updated the AIStorm with
turbulence. The change I made to the FGAIEntity struct was overriding the
thermal <strength-fps> data.
You'll find attached the modified fgadmin that takes care of
'Objects' and 'Terrain' if they exist. I also implemented the
'Check all' / 'Check none' feature you suggested several months
ago.
too old (wrong system time or broken proxy): stops after 10 stale reports
were fetched in a row. This should simply stop further fetching, but due
to a bug in the threading system(?) it does currently lead to abortion,
just like any other exception in the fetcher.
each other out. The problem is this: if we press, for example, "Ctrl-a", but
release the "Ctrl" modifier button *before* the "a" button (which nobody does
intentionally, but which happens all the time), then we don't get the RELEASE
signal on "Ctrl-a" (keycode 1), but on the "a" (79). But "a" hasn't been
pressed, so the signal is dropped. And who releases "Ctrl-a"? Nobody!
So the next PRESSED signal for "Ctrl-a" is ignored, too. It is still
"pressed" after all, isn't it? That's the reason for the occasional
non-functioning of keys.
Due to the nearing 0.9.9 release, I only commit a crude last-minute fix.
It's not as intrusive as it looks, and shouldn't be "dangerous" at all.
It only makes sure that when we get an unexpected RELEASE for one letter
key ("a") that the two twins "A" and "Ctrl-A" are released if they are
still in "pressed" state.
The proper fix will be to let fg_os{,_sdl}.cxx always report presses on the
same key ("a", "Shift-a", "Ctrl-a", "Alt-a", and other combinations of
modifiers) as the *same* key (97), only with modifiers appropriately set.
