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Conflicts:
src/corelib/kernel/qobject.cpp
src/corelib/kernel/qvariant.h
src/corelib/tools/qlist.h
Done-With: Milian Wolff <milian.wolff@kdab.com>
Done-With: Allan Sandfeld Jensen <allan.jensen@qt.io>
Change-Id: I6803f7239aa137a51a7467fab7cc7a01302a848d
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When we trace a scope, then we pass the scope args to the _entry trace
point. There is no need to do that also for the _exit trace points, it
just blows up the trace data for no obvious gain. Any decent tracing
consumer can easily find the args for the _exit call by matching it to
its _entry call.
Note that this is standard practice in trace points, and also done like
this in the Linux Kernel trace points for example.
Change-Id: I273293b0c7e799767acc1960b50ab675fc765a36
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Conflicts:
mkspecs/win32-clang-msvc/qmake.conf
src/gui/image/qpnghandler.cpp
Change-Id: Ied79d02912ffb3a307a99483df7db08c7f9d0cd8
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Additionally, we also add a Q_TRACE_EXIT which runs a trace point when
the scope is exited, leveraging qScopeGuard behind the scenes.
Q_TRACE_SCOPE uses Q_TRACE_EXIT internally - the difference is that
the _SCOPE version enforces the naming scheme of _entry / _exit for the
tracepoints, whereas Q_TRACE_EXIT can be used generically.
Change-Id: I4a2f5ea09f451fcf664d07fd493b679f7527ac06
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Refactor activate(), so that we eliminate almost all
checks for signal hooks in the common case.
Here are the benchmark numbers showing the improvement
for 100M signal emissions
without change with change
string based connect: 3836 3693
pointer based connect: 4571 4510
not connected: 479 433
disconnected: 559 522
Change-Id: I394e6ea5d5bc96e298e8cc0c763eed78c8041876
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
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So to make qtrace_p.h self-contained.
Change-Id: Ic94b20334b495cc8f9c6ff7b481ef3bd7621df08
Reviewed-by: Rafael Roquetto <rafael.roquetto@kdab.com>
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This commit introduces minimal support for instrumentation within Qt.
Currently, only LTTNG/Linux and ETW/Windows are supported.
Change-Id: I59b48cf83acf5532a998bb493e6379e9177e14c8
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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