src/util/perf/u_trace_priv.h

/*
 * Copyright © 2020 Google, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef __NEEDS_TRACE_PRIV
#  error "Do not use this header!"
#endif

#ifndef _U_TRACE_PRIV_H
#define _U_TRACE_PRIV_H

#include <stdio.h>

#include "u_trace.h"

/*
 * Internal interface used by generated tracepoints
 */

/**
 * Tracepoint descriptor.
 */
struct u_tracepoint {
   unsigned payload_sz;
   const char *name;
   bool end_of_pipe;
   void (*print)(FILE *out, const void *payload);
   void (*print_json)(FILE *out, const void *payload);
#ifdef HAVE_PERFETTO
   /**
    * Callback to emit a perfetto event, such as render-stage trace
    */
   void (*perfetto)(void *pctx, uint64_t ts_ns, const void *flush_data, const void *payload);
#endif
};

/**
 * Append a tracepoint, returning pointer that can be filled with trace
 * payload.
 */
void * u_trace_append(struct u_trace *ut, void *cs, const struct u_tracepoint *tp);

#endif  /* _U_TRACE_PRIV_H */