The function qof_book_use_split_action_for_num_field gets called quite a
lot in each register display refresh (due to sorting all splits from
Split.x's xaccSplitOrder function), but it always used to use a KVP
lookup, which is rather expensive compared to accessing a gboolean member
variable.
To get rid of this cost, I had to remove the KVP lookup in this
simple-looking function. The pattern is this: A gboolean cache variable is
introduced, along with an isvalid flag. The lookup makes the expensive
KVP lookup once, then caches the value. The GObject property mechanism
offers a callback for when the setter was called, which is used to mark
the cached value as invalid. A parallel setter method (here:
qof_book_set_option) also just marks the cache as invalid. This covers
all setters, and the getters will use the cached value except for their
first invocation.
The NUM_FIELD_SOURCE feature was introduced in 2012 by the very large
commit 7cdd7372 and apparently its costs never were a problem
until the KVP lookup became more costly due to the std::vector
construction and destruction.
Turns out that the on-the-fly conversion from const char* (the KVP_OPTION_PATH
constants) to std::string with their immediate deletion afterwards is
a quite costly operation. Avoiding this is surprisingly easy: Just keep
local std::string objects at hand, and they don't have to be created
and deleted anymore.
The more optimized solution might be to turn the std::vector<std::string>
into a std::vector<GQuark>, but this commit at least improves the picture for now.
This commit introduces a new feature flag:
GNC_FEATURE_GUID_FLAT_BAYESIAN. It signifies that the bayes import map
data are stored flat and by guid. Any time bayes import map data are
accessed, they are converted if necessary.
The template avoids the need to cast to and from void*, and adds flexibility to
the targeted function's signature.
test-stuff.h defines a macro, "failure" which is used as an identifier
in the standard IO library, so I moved any inclusion of test-stuff.h to
the last include position so that "failure" wouldn't be defined before
the IO library was included.
This will avoid a ninja-build from picking up a config.h generated by the autotools build
(in the root build directory). Picking up the wrong config.h may lead to all kinds of
subtle issues if the autotools run was done with different options than the cmake run.
Setting a feature writes to KVP which in the SQL backend causes the book
to be written out, which is rather expensive. Doing this in a loop (as
is the case in convert_imap_account, is quite slow, and this change
afforded a 4x speedup.
It is split into
- /libgnucash (for the non-gui bits)
- /gnucash (for the gui)
- /common (misc source files used by both)
- /bindings (currently only holds python bindings)
This is the first step in restructuring the code. It will need much
more fine tuning later on.
Christian Stimming
Geert Janssens
lmat
John Ralls