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author | Eike Rathke <erack@redhat.com> | 2016-09-22 22:20:48 +0200 |
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committer | Eike Rathke <erack@redhat.com> | 2016-09-23 15:14:03 +0000 |
commit | 7d8196ea2f4ec3634dbad7367345e62c4ea9893d (patch) | |
tree | 4550d4ccc4205ae5ca9f134d29927b202e10fb70 /include/vcl/textdata.hxx | |
parent | These functions wouldn't be implicitly declared/defined, anyway (diff) | |
download | core-7d8196ea2f4ec3634dbad7367345e62c4ea9893d.tar.gz core-7d8196ea2f4ec3634dbad7367345e62c4ea9893d.zip |
perf: eliminate SfxSimpleHint and move to SfxHint, tdf#87101 related
There were over 150 places in *::Notify() functions that did some
dynamic_cast<SfxSimpleHint*> of which ~98% were unnecessary because the
base class SfxHint passed was an SfxSimpleHint anyway. dynamic_cast
operations come with quite some cost, so avoid if possible. Specifically
for ScFormulaCell::Notify() that created a bottleneck in scenarios where
cells were notified that already handled a previous notification. In
mass operations doing the dynamic_cast before it could be decided
whether having to act on it or not this made 2/3 of all time spent in
the Notify() call.
To get rid of that rename/move SfxSimpleHint to SfxHint and let classes
derive from SfxHint instead of SfxSimpleHint. This comes only with a
slight cost that an additional sal_uInt32 is transported in such hints,
initialized to 0, but this is neglectable compared to the huge gain.
For the rare cases where a Notify() actually expects both, an SfxHint
(formerly SfxSimpleHint) and a derived hint, this changed order of the
dynamic_cast involved so the simple SfxHint::GetId() is handled last.
Modules using such combinations can further optimize by treating the
simple SfxHint::GetId() first once verified that none of the other
derived hints use an ID not equal to zero respectively none of the ID
values the simple hint uses.
Change-Id: I9fcf723e3a4487ceb92336189d23a62c344cf0ce
Reviewed-on: https://gerrit.libreoffice.org/29205
Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Eike Rathke <erack@redhat.com>
Diffstat (limited to 'include/vcl/textdata.hxx')
-rw-r--r-- | include/vcl/textdata.hxx | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/vcl/textdata.hxx b/include/vcl/textdata.hxx index 7339f0f876b4..abcd6629dad3 100644 --- a/include/vcl/textdata.hxx +++ b/include/vcl/textdata.hxx @@ -20,8 +20,10 @@ #ifndef INCLUDED_VCL_TEXTDATA_HXX #define INCLUDED_VCL_TEXTDATA_HXX +#include <sal/types.h> +#include <tools/solar.h> #include <rtl/ustring.hxx> -#include <svl/smplhint.hxx> +#include <svl/hint.hxx> #include <vcl/dllapi.h> enum class ExtTextInputAttr; @@ -125,7 +127,7 @@ inline bool TextSelection::operator != ( const TextSelection& rSel ) const #define TEXT_HINT_VIEWSELECTIONCHANGED 101 #define TEXT_HINT_VIEWCARETCHANGED 102 -class VCL_DLLPUBLIC TextHint : public SfxSimpleHint +class VCL_DLLPUBLIC TextHint : public SfxHint { private: sal_uLong mnValue; |