C++ (Cpp) clib_mem_set_heap Examples

Example #1

File: smp.c Project: saumzy/clib

static uword allocate_per_cpu_mheap (uword cpu)
{
  clib_smp_main_t * m = &clib_smp_main;
  void * heap;
  uword vm_size, stack_size, mheap_flags;

  ASSERT (os_get_cpu_number () == cpu);

  vm_size = (uword) 1 << m->log2_n_per_cpu_vm_bytes;
  stack_size = (uword) 1 << m->log2_n_per_cpu_stack_bytes;

  mheap_flags = MHEAP_FLAG_SMALL_OBJECT_CACHE;

  /* Heap extends up to start of stack. */
  heap = mheap_alloc_with_flags (clib_smp_vm_base_for_cpu (m, cpu),
				 vm_size - stack_size,
				 mheap_flags);
  clib_mem_set_heap (heap);

  if (cpu == 0)
    {
      /* Now that we have a heap, allocate main structure on cpu 0. */
      vec_resize (m->per_cpu_mains, m->n_cpus);

      /* Allocate shared global heap (thread safe). */
      m->global_heap =
	mheap_alloc_with_flags (clib_smp_vm_base_for_cpu (m, cpu + m->n_cpus),
				vm_size,
				mheap_flags | MHEAP_FLAG_THREAD_SAFE);
    }

  m->per_cpu_mains[cpu].heap = heap;
  return 0;
}

Example #2

File: trace.c Project: JehandadKhan/vpp

/* Free up all trace buffer memory. */
always_inline void
clear_trace_buffer (void)
{
  int i;
  vlib_trace_main_t * tm;

  foreach_vlib_main (
  ({
    void *mainheap;

    tm = &this_vlib_main->trace_main;
    mainheap = clib_mem_set_heap (this_vlib_main->heap_base);

    for (i = 0; i < vec_len (tm->trace_buffer_pool); i++)
      if (! pool_is_free_index (tm->trace_buffer_pool, i))
        vec_free (tm->trace_buffer_pool[i]);
    pool_free (tm->trace_buffer_pool);
    clib_mem_set_heap (mainheap);
  }));