emitDisabledDriverError()

static FL_NO_INLINE void fl::anonymous_namespace{channel.cpp.hpp}::emitDisabledDriverError ( const fl::string & channelName, const fl::string & driverName, const fl::string & exclusive )

static

Out-of-line cold-path emitter for the #2517 silent-drop DISABLED-driver diagnostic in Channel::showPixels.

showPixels runs every frame, but this diagnostic is gated behind a one-shot latch (mDisabledDriverWarned) and only fires when a bound driver has been runtime-disabled (typically by FastLED.setExclusiveDriver<OtherBus>()). Inlining the two alternative FL_ERROR chains was costing ~10 operator<< instantiations in showPixels' prologue/epilogue for code that runs at most once per channel lifetime. Splitting matches the same pattern the maintainer adopted for resolveDynamicDriver() in PR #2830 — keep the diagnostic chain in a FL_NO_INLINE helper so it can't fold back into the hot path. (#2773 follow-up to #2832.)

Definition at line 200 of file channel.cpp.hpp.

                                                                            {
    FL_UNUSED(channelName);  // only consumed by FL_ERROR, a no-op on small platforms
    FL_UNUSED(driverName);
    if (!exclusive.empty()) {
        FL_ERROR("Channel '" << channelName << "': bound driver '" << driverName << "' is currently DISABLED by exclusive-driver selection '" << exclusive << "'. Frame will be silently dropped. Resolve with: FastLED.enableDrivers<fl::Bus::" << driverName << ">() or FastLED.enableAllDrivers().");
    } else {
        FL_ERROR("Channel '" << channelName << "': bound driver '" << driverName << "' is currently DISABLED. Frame will be silently dropped. Resolve with: FastLED.enableDrivers<fl::Bus::" << driverName << ">() or FastLED.enableAllDrivers().");
    }
}

References emitDisabledDriverError(), FL_ERROR, fl::FL_NO_EXCEPT, and FL_UNUSED.

Referenced by emitDisabledDriverError().

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