TheRock/debug-tools/rocgdb/source/gdb/testsuite/gdb.rocm/step-schedlock-spurious-waves.cpp

/*
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*/

#include <hip/hip_runtime.h>

/* Helper function where the debugger places a breakpoint to be sure no wave
   can run to completion without the debugger noticing.  optnone implies
   noinline and keeps the body opaque to the optimizer, so the breakpoint is
   reliable and the call is not proven away under -O1/-O2/-O3.  */
__device__ void __attribute__ ((optnone))
end_of_kernel ()
{
}

__global__ void
kern ()
{
  /* The test will need to step a few times, so provide an empty loop that
     will make it possible.  */
  for (int i = 0; i < 100; i++)
    __builtin_amdgcn_s_sleep (1);

  end_of_kernel ();
}


int
main ()
{
  /* Dispatch many workitems to ensure that when hog terminates there are
     enough pending waves that are created by hw to occupy vacated slots.

     TODO: Replace hard coded values based on output of "info agents". */
  kern<<<4096, 256>>> ();
  return hipDeviceSynchronize () != hipSuccess;
}