nvtx.cpp

/* Copyright (c) 2014, NVIDIA CORPORATION. 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 NVIDIA CORPORATION 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 ``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.
 */

#include <stdio.h>
#include <nvToolsExt.h>
#include <dlfcn.h>
#include <cxxabi.h>

const char* const default_name = "Unknown";

const uint32_t colors[] = { 0xff00ff00, 0xff0000ff, 0xffffff00, 0xffff00ff, 0xff00ffff, 0xffff0000, 0xffffffff };
const int num_colors = sizeof(colors)/sizeof(uint32_t);
static int color_id = 0;

extern "C" void __cyg_profile_func_enter(void *this_fn, void *call_site) __attribute__((no_instrument_function));
extern "C" void __cyg_profile_func_exit(void *this_fn, void *call_site) __attribute__((no_instrument_function));

void rangePush(const char* const name ) __attribute__((no_instrument_function));
void rangePop() __attribute__((no_instrument_function));

extern "C" void __cyg_profile_func_enter(void *this_fn, void *call_site)
{
  Dl_info this_fn_info;
  if ( dladdr( this_fn, &this_fn_info ) )
  {
    rangePush(this_fn_info.dli_sname);
  }
  else
  {
    rangePush(default_name);
  }
} /* __cyg_profile_func_enter */

extern "C" void __cyg_profile_func_exit(void *this_fn, void *call_site)
{
  rangePop();
} /* __cyg_profile_func_enter */

void rangePush(const char* const name )
{
  nvtxEventAttributes_t eventAttrib = {0};
  eventAttrib.version = NVTX_VERSION;
  eventAttrib.size = NVTX_EVENT_ATTRIB_STRUCT_SIZE;
  eventAttrib.colorType = NVTX_COLOR_ARGB;
  eventAttrib.color = colors[color_id];
  color_id = (color_id+1)%num_colors;
  eventAttrib.messageType = NVTX_MESSAGE_TYPE_ASCII;
  if ( name != 0 )
  {
    eventAttrib.message.ascii = name;
  }
  else
  {
    eventAttrib.message.ascii = default_name;
  }
  nvtxRangePushEx(&eventAttrib);
}

void rangePop()
{
  nvtxRangePop();
}