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/***
* Copyright 2020 HAProxy Technologies
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _OPENTRACING_C_WRAPPER_SPAN_H_
#define _OPENTRACING_C_WRAPPER_SPAN_H_
#define OT_LF(a) { fields[a].key, str_value[a] }
class otc_hash {
public:
size_t operator() (int64_t key) const { return key; }
};
class otc_equal_to {
public:
bool operator() (int64_t a, int64_t b) const { return a == b; }
};
# ifdef OT_THREADS_NO_LOCKING
template<typename T>
using Handle = std::unordered_map<
int64_t,
std::unique_ptr<T>,
otc_hash,
otc_equal_to
>;
struct HandleData {
int64_t key;
int64_t alloc_fail_cnt;
int64_t erase_cnt;
int64_t destroy_cnt;
};
# define OT_LOCK_GUARD(a,...)
# define OT_LOCK(a,b)
extern thread_local Handle<opentracing::Span> ot_span_handle;
extern thread_local Handle<opentracing::SpanContext> ot_span_context_handle;
extern struct HandleData ot_span;
extern struct HandleData ot_span_context;
# else
template<typename T> struct Handle {
std::unordered_map<
int64_t,
std::unique_ptr<T>,
otc_hash,
otc_equal_to
> handle;
int64_t key;
int64_t alloc_fail_cnt;
int64_t erase_cnt;
int64_t destroy_cnt;
std::mutex mutex;
};
# define ot_span_handle ot_span.handle
# define ot_span_context_handle ot_span_context.handle
# define OT_LOCK_GUARD(a,...) const std::lock_guard<std::mutex> guard_##a(ot_##a.mutex, ##__VA_ARGS__)
# define OT_LOCK(a,b) std::lock(ot_##a.mutex, ot_##b.mutex); OT_LOCK_GUARD(a, std::adopt_lock); OT_LOCK_GUARD(b, std::adopt_lock);
extern struct Handle<opentracing::Span> ot_span;
extern struct Handle<opentracing::SpanContext> ot_span_context;
# endif /* OT_THREADS_NO_LOCKING */
struct otc_span *ot_span_new(void);
void ot_nolock_span_destroy(struct otc_span **span);
struct otc_span_context *ot_span_context_new(const struct otc_span *span);
#endif /* _OPENTRACING_C_WRAPPER_SPAN_H_ */
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*
* vi: noexpandtab shiftwidth=8 tabstop=8
*/
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