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/**
* Copyright (C) 2019-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#pragma once
#include "mongo/config.h"
namespace mongo {
#ifdef MONGO_CONFIG_USDT_ENABLED
#if MONGO_CONFIG_USDT_PROVIDER == SDT
#include <sys/sdt.h>
#endif
#define MONGO_USDT_SUFFIX_(...) \
MONGO_USDT_SUFFIX_I_(__VA_ARGS__, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, )
#define MONGO_USDT_SUFFIX_I_(_0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, N, ...) N
#define MONGO_USDT_CONCAT_(a, b) MONGO_USDT_CONCAT_I_(a, b)
#define MONGO_USDT_CONCAT_I_(a, b) a##b
/**
* Create a USDT probe with a symbol defined by the first argument. Between 0 and 12 additional
* parameters can be optionally passed to the probe.
*
* Example usage:
* MONGO_USDT(probe1); // symbol is probe1, no additional arguments passed to probe
* MONGO_USDT(probe2, arg1, arg2, arg3); // symbol is probe2, passing 3 arguments to probe
*/
#define MONGO_USDT(...) \
MONGO_USDT_CONCAT_(DTRACE_PROBE, MONGO_USDT_SUFFIX_(__VA_ARGS__))(mongodb, __VA_ARGS__)
#else
#define MONGO_USDT(...)
#endif // MONGO_CONFIG_USDT_ENABLED
} // namespace mongo
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