src/devices/bus/lib/virtio/trace.h

// Copyright 2016 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef SRC_DEVICES_BUS_LIB_VIRTIO_TRACE_H_
#define SRC_DEVICES_BUS_LIB_VIRTIO_TRACE_H_

#include <stdio.h>

// clang-format off

// trace routines
#define TRACE_ENTRY printf("%s: entry\n", __PRETTY_FUNCTION__)
#define TRACE_EXIT printf("%s: exit\n", __PRETTY_FUNCTION__)
#define TRACE_ENTRY_OBJ printf("%s: entry obj %p\n", __PRETTY_FUNCTION__, this)
#define TRACE_EXIT_OBJ printf("%s: exit obj %p\n", __PRETTY_FUNCTION__, this)
#define TRACE printf("%s:%d\n", __PRETTY_FUNCTION__, __LINE__)
#define TRACEF(str, x...) do { printf("%s:%d: " str, __PRETTY_FUNCTION__, __LINE__, ## x); } while (0)

// trace routines that work if LOCAL_TRACE is set
#define LTRACE_ENTRY do { if (LOCAL_TRACE) { TRACE_ENTRY; } } while (0)
#define LTRACE_EXIT do { if (LOCAL_TRACE) { TRACE_EXIT; } } while (0)
#define LTRACE_ENTRY_OBJ do { if (LOCAL_TRACE) { TRACE_ENTRY_OBJ; } } while (0)
#define LTRACE_EXIT_OBJ do { if (LOCAL_TRACE) { TRACE_EXIT_OBJ; } } while (0)
#define LTRACE do { if (LOCAL_TRACE) { TRACE; } } while (0)
#define LTRACE_DO(expr) do { if (LOCAL_TRACE) { expr; } } while (0)
#define LTRACEF(x...) do { if (LOCAL_TRACE) { TRACEF(x); } } while (0)
#define LTRACEF_LEVEL(level, x...) do { if (LOCAL_TRACE >= (level)) { TRACEF(x); } } while (0)

// clang-format on

#endif  // SRC_DEVICES_BUS_LIB_VIRTIO_TRACE_H_