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src: add include guard for trace_event_common.h
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PR-URL: #26883
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Refael Ackermann <refack@gmail.com>
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gengjiawen authored and refack committed Mar 26, 2019
1 parent 332032c commit 975bc89
Showing 1 changed file with 5 additions and 0 deletions.
5 changes: 5 additions & 0 deletions src/tracing/trace_event_common.h
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// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef SRC_TRACE_EVENT_COMMON_H
#define SRC_TRACE_EVENT_COMMON_H

// This header file defines the set of trace_event macros without specifying
// how the events actually get collected and stored. If you need to expose trace
// events to some other universe, you can copy-and-paste this file as well as
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#define TRACE_EVENT_SCOPE_NAME_GLOBAL ('g')
#define TRACE_EVENT_SCOPE_NAME_PROCESS ('p')
#define TRACE_EVENT_SCOPE_NAME_THREAD ('t')

#endif // SRC_TRACE_EVENT_COMMON_H

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