C++ (Cpp) set_size_in_bytesの例

コード例 #1

//------------------------------Arena------------------------------------------
Arena::Arena( size_t init_size ) {
    init_size = (init_size+3) & ~3;
    _first = _chunk = new (init_size) Chunk(init_size);
    _hwm = _chunk->bottom();      // Save the cached hwm, max
    _max = _chunk->top();
    set_size_in_bytes(init_size);
}

コード例 #2

ファイル: allocation.cpp プロジェクト: fatman2021/myforthprocessor

Arena::Arena(size_t init_size) {
  size_t round_size = (sizeof (char *)) - 1;
  init_size = (init_size+round_size) & ~round_size;
  _first = _chunk = new (init_size) Chunk(init_size);
  _hwm = _chunk->bottom();      // Save the cached hwm, max
  _max = _chunk->top();
  set_size_in_bytes(init_size);
} 

コード例 #3

//------------------------------grow-------------------------------------------
// Grow a new Chunk
void* Arena::grow( size_t x ) {
    // Get minimal required size.  Either real big, or even bigger for giant objs
    size_t len = max(x, Chunk::size);

    register Chunk *k = _chunk;   // Get filled-up chunk address
    _chunk = new (len) Chunk(len);

    if( k ) k->_next = _chunk;    // Append new chunk to end of linked list
    else _first = _chunk;
    _hwm  = _chunk->bottom();     // Save the cached hwm, max
    _max =  _chunk->top();
    set_size_in_bytes(size_in_bytes() + len);
    void* result = _hwm;
    _hwm += x;
    return result;
}

コード例 #4

ファイル: allocation.cpp プロジェクト: fatman2021/myforthprocessor

// Grow a new Chunk
void* Arena::grow( size_t x ) {
  // Get minimal required size.  Either real big, or even bigger for giant objs
  size_t len = MAX2(x, (size_t) Chunk::size);

  Chunk *k = _chunk;            // Get filled-up chunk address
  _chunk = new (len) Chunk(len);

  if (_chunk == NULL)
      vm_exit_out_of_memory(len * Chunk::aligned_overhead_size(), "Arena::grow");

  if (k) k->set_next(_chunk);   // Append new chunk to end of linked list
  else _first = _chunk;
  _hwm  = _chunk->bottom();     // Save the cached hwm, max
  _max =  _chunk->top();
  set_size_in_bytes(size_in_bytes() + len);
  void* result = _hwm;
  _hwm += x;
  return result;
}

コード例 #5

ファイル: allocation.cpp プロジェクト: fatman2021/myforthprocessor

Arena::Arena(Arena *a) : _chunk(a->_chunk), _hwm(a->_hwm), _max(a->_max), _first(a->_first) { 
  set_size_in_bytes(a->size_in_bytes());
} 

コード例 #6

ファイル: allocation.cpp プロジェクト: fatman2021/myforthprocessor

Arena::Arena() {
  _first = _chunk = new (Chunk::init_size) Chunk(Chunk::init_size);
  _hwm = _chunk->bottom();      // Save the cached hwm, max
  _max = _chunk->top();
  set_size_in_bytes(Chunk::init_size);
}