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Having subsurface-core as a directory name really messes with
autocomplete and is obviously redundant. Simmilarly, qt-mobile caused an
autocomplete conflict and also was inconsistent with the desktop-widget
name for the directory containing the "other" UI.
And while cleaning up the resulting change in the path name for include
files, I decided to clean up those even more to make them consistent
overall.
This could have been handled in more commits, but since this requires a
make clean before the build, it seemed more sensible to do it all in one.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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This caches the git ID for the dive on load, and avoids building the
dive directory and hashing it on save as long as nothing has invalidated
the git ID cache.
That should make it much faster to write back data to the git
repository, since the dive tree structure and the divecomputer blobs in
particular are the bulk of it (due to all the sample data). It's not
actually the git operations that are all that expensive, it's literally
generating the big blob with all the snprintf() calls for the data.
The git save used to be a fairly expensive with large data sets,
especially noticeable on mobile with much weaker CPU's. This should
speed things up by at least a factor of two.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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This bug admittedly hits almost nobody, but if you had multiple cylinder
pressure sensors on the same cylinder (attached to multiple dive
computers, of course), we would take the beginning pressure from the
first dive computer, and the ending pressure from the last dive
computer.
That came about because we'd just walk all the dive computer samples in
order, and the first time we see a relevant sample and we don't have a
beginning pressure, we'd take that pressure. So the beginning pressure
was from the first dive computer, and once we'd seen a valid beginning
pressure, that would never change.
But as we're walking along, we'd continue to update the ending pressure
from the last relevant sample we see, which means that as we go on to
look at the other dive computers, we'd continue to update the ending
pressure with data from them.
And mixing beginning/ending pressures from two different sensors just
does not make sense.
This changes the logic to be the same for beginning and ending
pressures: we only update it once, with the first relevant sample we
see. But we walk the samples twice: forwards from the beginning to
find the first beginning pressure, and backwards from the end to find
the ending pressure.
That means that as we move on to the second dive computer, we've now
filled in the ending pressure from the first one, and will no longer
update it any more.
NOTE! We don't stop scanning the samples (or the dive computers) just
because we've found a valid pressure value. We'll always walk all the
samples because there might be multiple different cylinders that get
pressure data from different samples (and different dive computers).
We could have some early-out logic when we've filled in all relevant
cylinders, but since this just runs once per dive it's not worth it.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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fixup_dive_dc() is called for each dive computer when we add a new dive.
It does various housekeeping functions, cleaning up the sample data, and
fixing up dive details as a result of the sample data.
The function has grown to be a monster over time, and particularly the
central "walk every sample" loop has become an unreadable mess.
And the thing is, this isn't even all that performance-critical: it's
only done once per dive and dc, and there is no reason to have a single
illegible and complex loop.
So split up that loop into several smaller pieces that each will loop
individually over the sample data, and do just one thing. So now we
have separate functions for
- fixing up the depth samples with interpolation
- fixing up dive temperature data
- correcting the cylinder pressure sensor index
- cleaning up the actual sample pressures
Yes, this way we walk the samples multiple times, but the end result is
that the code is much easier to understand. There should be no actual
behavioral differences from this cleanup, except for the fact that since
the code is much more understandable, this cleanup also fixed a bug:
In the temperature fixup, we would fix up the overall dive temperatures
based on the dive computer temperatures. But we would then fix up the
overall dive computer temperature based on the sample temperature
*afterwards*, which wouldn't then be reflected in the overall dive
temperatures.
There was another non-symptomatic bug that became obvious when doing
this cleanup: the code used to calculate a 'depthtime' over the dive
that was never actually used. That's a historical artifact of old code
that had become dead when the average depth calculations were moved to a
function of their own earlier.
This is preparatory for fixing the overall cylinder pressure stats,
which are currently wrong for dives with multiple dive computers: we
currently take the starting cylinder pressure from the *first* dive
computer that has cylinder pressure information, but we take the ending
cylinder pressure from the *last* dive computer with cylinder pressure
information.
This does not fix that bug, but without this cleanup fixing that would
be a nightmare due to the previous complicated "do everything in one
single loop" model.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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We really have two different cases for merging dives:
(a) downloading a new dive from a dive computer, and merging it with an
existing dive that we had already created using a different dive
computer. This is the "try_to_merge()" case, called from
"process_dives()
(b) merging two different dives into one longer dive. This is the
"merge_two_dives()" case when you explicitly merge dives using the
divelist.
While a lot of the issues are the same, many details differ, and one of
the details is how dive numbering should be handled.
In particular, when you download from a dive computer and merge with an
existing dive, you want too take the *maximum* dive number, because the
dive computer notion of which dive it is may well not match what the
user dive number is.
On the other hand, when you explicitly merge in the dive list, you end
up renumbering not just the dive you are merging, but also all
subsequent dives, since you now have one fewer dives overall. So that
case already has to be handled by the caller.
Now, the simpler "download from dive computer" case was broken by commit
ce3a78efcac2 ("Assign lower number to a merged dive instead of higher
one"). It fixed the numbering for the divelist case, but broke the
download case.
So this commit reverts commit ce3a78efcac2, and instead extends and
clarifies the dive renumbering that "merge_two_dives()" already did. It
now explicitly renumbers not just the following dives, but also
renumbers the merged dive itself, so now we can go back to the old "take
the bigger dive number" for the core merging, which fixes the download
case.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Trying to clean up the signed vs. unsigned issues it becomes clear that
forcing depth to be unsigned causes way too many problems in the code.
So this commit goes the opposite direction; since we clearly aren't
limited INT_MAX vs UINT_MAX, simply make more of the depth related
variables signed.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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as otherwise we crash when the picture is freed before the
worker thread (to load from the net or to compute hashes)
is finished
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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This started out as cleaning up warnings - but it actually turned into a
matter of semantics and correctness. Which lead to changes in .h files
which will have a ton of ripple effects.
A lot more of this to come.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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The gas compressibility is such a specialized thing that I really prefer
having it separate.
This keeps Robert's Redlich-Kwong equation as-is, but let's experiment
with other models soon...
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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As it turns out, the van der Waals equation gives results that are
numerically not really useful, so we use the Redlich Kwong equation
which is, according to Wikipedia, much more accurate, which can be confirmed
given the empirical values for air.
As opposed to the previous approach with a look-up table, this takes
into account the actual gasmix. This always assumes the gas to be at
20 degrees Centigrade.
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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There was a reported case of an import of a dive that gave a salinity of
35g/l. This is an actual salinity (an amount of salt in the water) but
for subsurface the salinity is actually the density of the water. So for
too small values of the salinity add the density of fresh water.
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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We could in theory make this dependent on the gasmix, but for now let's
just assume (incorrectly) that everything we breathe acts like air.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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This actually didn't make a difference for the common case, since our
simplified gas compressibility model had a compressibility factor of 1.0
up to 200 bar, and increased smoothly from there. As a result, the
common 2400 and 3000 psi workpressures didn't really see an effect from
this.
Not taking compressibility into account does kind of make sense for
cylinder naming, since the cylinder may be used for different gases with
very different compressibility characteristics.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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This marks "surface_volume_multiplier()" static in preparation for
changing it to use an actual honest-to-goodness compressibility
estimation. Without that, it wasn't obvious that the function wasn't
used in other random places.
Also, remove the "wet_volume()" function. It was unused, but more
importantly, it was wrong. Yes, it was the inverse of "gas_volume()",
but when you calculate wet volumes from the imperial sizes, you don't
actually use the "real" gas volume, you use the idealized one.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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We (ab)use fake_dc() to create a pleasing profile for a manually added
dive. Based on it's intended use, fake_dc() simply handed back a dc
structure that pointed at staticly allocated samples - that's obviously
(now that I think about it) going to blow up in my face if I edit a
manually added dive more than once.
So now we have an option for fake_dc() to actually allocate the samples -
this way the rest of the code can treat these samples as we would treat
samples created any other way. We can free them and replace them with a
new set.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Fixes #1003
Signed-off-by: Miika Turkia <miika.turkia@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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At the moment, if we have, say, dives ... 100, 101 and 102 and we merge 101 and
102, we get a list numbered ... 99, 100, 102. This is, probably, an
undesired behavior. The patch simple chooses lower of both dive numbers instead
of higher one.
Signed-off-by: Salvador Cuñat <salvador.cunat@gmail.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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This probably is a serious bug, found by cppcheck.
Original code had paren's in probably the wrong place!
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Tank icons were shown at incorrect spots on the profile
when the DiveEventItem object held a pointer to a struct
event even after the struct event at that address had
been freed. When internalEvent is a pointer to freed
memory, internalEvent->time.seconds could have all kinds
of crazy values, which get used in member function
DiveEventItem::recalculatePos to place the tank at bad
x coordinates.
The DiveEventItem(s) no longer store a pointer to memory
that they do not own. This way, no matter how the path of
execution arrives into slot recalculatePos, we never need
fear that the DiveEventItem will dereference a garbage
pointer to a struct event.
Fixes #968
Signed-off-by: K. Heller <pestophagous@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Fix obvious spelling mistakes in comments (and one error message).
Yes, this is trivial but I saw one while reviewing some of the code
and after that decided to run code through some tools.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
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And adapt a new CMakeLists.txt file for it. On the way I've also
found out that we where double-compilling a few files. I've also
set the subsurface-core as a include_path but that was just to
reduce the noise on this commit, since I plan to remove it from
the include path to make it obligatory to specify something like
include "subsurface-core/dive.h"
for the header files. Since the app is growing quite a bit we ended
up having a few different files with almost same name that did
similar things, I want to kill that (for instance Dive.h, dive.h,
PrintDive.h and such).
Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Dirk Hohndel
Linus Torvalds
Robert C. Helling
Miika Turkia
Salvador Cuñat
Stephen Hemminger
K. \"pestophagous\" Heller
Lubomir I. Ivanov
Tomaz Canabrava