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Make logging cost free when there is no output target (#12247)

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The logging streams now do almost no work when there is no output target for them.

For example, if LL_VERBOSE has no output targets, then `verbosestream << x` will return a StreamProxy with a null target. Any further `<<` operations applied to it will do nothing.
This commit is contained in:
paradust7
2022-05-04 11:55:01 -07:00
committed by GitHub
parent ae7664597e
commit 0704ca0550
14 changed files with 336 additions and 192 deletions
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src/client/renderingengine.cpp
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@@ -116,7 +116,7 @@ RenderingEngine::RenderingEngine(IEventReceiver *receiver)
}
SIrrlichtCreationParameters params = SIrrlichtCreationParameters();
if (g_logger.getTraceEnabled())
if (tracestream)
params.LoggingLevel = irr::ELL_DEBUG;
params.DriverType = driverType;
params.WindowSize = core::dimension2d<u32>(screen_w, screen_h);