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/* Copyright (c) 2017-2020, The Tor Project, Inc. */
/* See LICENSE for licensing information */
/**
* \file events.h
* \brief Header file for Tor tracing instrumentation definition.
**/
#ifndef TOR_LIB_TRACE_EVENTS_H
#define TOR_LIB_TRACE_EVENTS_H
/* XXX: DOCDOC once framework is stable. */
#ifdef HAVE_TRACING
#define tor_trace(subsystem, event_name, ...) \
do { \
TOR_TRACE_LOG_DEBUG(tor_ ## subsystem, event_name); \
TOR_TRACE_USDT(tor_ ## subsystem, event_name, ## __VA_ARGS__); \
} while (0)
/* This corresponds to the --enable-tracing-instrumentation-log-debug
* configure option which maps all tracepoints to a log_debug() statement. */
#include "lib/trace/debug.h"
/* This corresponds to the --enable-tracing-instrumentation-usdt configure
* option which will generate USDT probes for each tracepoints. */
#include "lib/trace/usdt/usdt.h"
#else /* !defined(HAVE_TRACING) */
/* Reaching this point, tracing is disabled thus we NOP every tracepoints
* declaration so we have no execution cost at runtime. */
#define tor_trace(subsystem, name, ...)
#endif /* defined(HAVE_TRACING) */
#endif /* !defined(TOR_LIB_TRACE_EVENTS_H) */
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