| /* |
| * |
| * Copyright 2015, 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_CORE_EXT_CENSUS_CENSUS_TRACING_H |
| #define GRPC_CORE_EXT_CENSUS_CENSUS_TRACING_H |
| |
| #include <grpc/support/time.h> |
| #include "src/core/ext/census/census_rpc_stats.h" |
| |
| /* WARNING: The data structures and APIs provided by this file are for GRPC |
| library's internal use ONLY. They might be changed in backward-incompatible |
| ways and are not subject to any deprecation policy. |
| They are not recommended for external use. |
| */ |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* Struct for a trace annotation. */ |
| typedef struct census_trace_annotation { |
| gpr_timespec ts; /* timestamp of the annotation */ |
| char txt[CENSUS_MAX_ANNOTATION_LENGTH + 1]; /* actual txt annotation */ |
| struct census_trace_annotation *next; |
| } census_trace_annotation; |
| |
| typedef struct census_trace_obj { |
| census_op_id id; |
| gpr_timespec ts; |
| census_rpc_stats rpc_stats; |
| char *method; |
| census_trace_annotation *annotations; |
| } census_trace_obj; |
| |
| /* Deletes trace object. */ |
| void census_trace_obj_destroy(census_trace_obj *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. */ |
| census_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 name associated with the input trace object. */ |
| const char *census_get_trace_method_name(const census_trace_obj *trace); |
| |
| /* Returns an array of pointers to trace objects of currently active operations |
| and fills in number of active operations. Returns NULL if there are no active |
| operations. |
| Caller owns the returned objects. */ |
| census_trace_obj **census_get_active_ops(int *num_active_ops); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* GRPC_CORE_EXT_CENSUS_CENSUS_TRACING_H */ |