section.hpp File Reference

Per-section cycle profiling with EWMA smoothing. More...

#include <cstdint>

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Classes
struct	sbl::profiling::SectionProfile

Namespaces
namespace	sbl
	Root namespace for all Sound Byte Libs functionality.
namespace	sbl::profiling
	CPU load monitoring.

Macros
#define	SBL_PROF_MARK(var)   (void)0
	Mark a timestamp variable for section profiling.
#define	SBL_PROF_SECTION(section, start)   (void)0
	Measure cycles since 'start', update section profile, advance start.

Detailed Description

Per-section cycle profiling with EWMA smoothing.

Measures CPU cycles consumed by named code sections in audio callbacks. Uses integer EWMA (alpha = 1/128, shift-based) for low-overhead smoothing.

Gated behind SBL_PROFILING_ENABLED. When disabled, SectionProfile::avg is a static constexpr zero so format strings compile without #ifdef.

Usage: static sbl::profiling::SectionProfile s_prof_osc; static sbl::profiling::SectionProfile s_prof_svf;

void audio_callback(...) { SBL_PROF_MARK(t); // ... oscillator rendering ... SBL_PROF_SECTION(s_prof_osc, t); // ... filter processing ... SBL_PROF_SECTION(s_prof_svf, t); }

Definition in file section.hpp.

Macro Definition Documentation

SBL_PROF_MARK

#define SBL_PROF_MARK

(

var

)

(void)0

Mark a timestamp variable for section profiling.

Definition at line 58 of file section.hpp.

SBL_PROF_SECTION

#define SBL_PROF_SECTION	(		section,
			start
	)		(void)0

Measure cycles since 'start', update section profile, advance start.

Definition at line 69 of file section.hpp.