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/*
*
* Copyright 2014, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef __GRPC_INTERNAL_STATISTICS_CENSUS_TRACING_H_
#define __GRPC_INTERNAL_STATISTICS_CENSUS_TRACING_H_
/* Opaque structure for trace object */
typedef struct trace_obj trace_obj;
/* Initializes trace store. This function is thread safe. */
void census_tracing_init(void);
/* Shutsdown trace store. This function is thread safe. */
void census_tracing_shutdown(void);
/* Gets trace obj corresponding to the input op_id. Returns NULL if trace store
is not initialized or trace obj is not found. Requires trace store being
locked before calling this function. */
trace_obj* census_get_trace_obj_locked(census_op_id op_id);
/* The following two functions acquire and release the trace store global lock.
They are for census internal use only. */
void census_internal_lock_trace_store(void);
void census_internal_unlock_trace_store(void);
/* Gets method tag name associated with the input trace object. */
const char* census_get_trace_method_name(const trace_obj* trace);
#endif /* __GRPC_INTERNAL_STATISTICS_CENSUS_TRACING_H_ */
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