1215976Sjmallett//===- llvm/ADT/SmallVector.cpp - 'Normally small' vectors ----------------===// 2232812Sjmallett// 3215976Sjmallett// The LLVM Compiler Infrastructure 4215976Sjmallett// 5215976Sjmallett// This file is distributed under the University of Illinois Open Source 6215976Sjmallett// License. See LICENSE.TXT for details. 7215976Sjmallett// 8215976Sjmallett//===----------------------------------------------------------------------===// 9215976Sjmallett// 10215976Sjmallett// This file implements the SmallVector class. 11215976Sjmallett// 12215976Sjmallett//===----------------------------------------------------------------------===// 13215976Sjmallett 14215976Sjmallett#include "llvm/ADT/SmallVector.h" 15215976Sjmallettusing namespace llvm; 16215976Sjmallett 17215976Sjmallett/// grow_pod - This is an implementation of the grow() method which only works 18232812Sjmallett/// on POD-like datatypes and is out of line to reduce code duplication. 19215976Sjmallettvoid SmallVectorBase::grow_pod(void *FirstEl, size_t MinSizeInBytes, 20215976Sjmallett size_t TSize) { 21215976Sjmallett size_t CurSizeBytes = size_in_bytes(); 22215976Sjmallett size_t NewCapacityInBytes = 2 * capacity_in_bytes() + TSize; // Always grow. 23215976Sjmallett if (NewCapacityInBytes < MinSizeInBytes) 24215976Sjmallett NewCapacityInBytes = MinSizeInBytes; 25215976Sjmallett 26215976Sjmallett void *NewElts; 27215976Sjmallett if (BeginX == FirstEl) { 28215976Sjmallett NewElts = malloc(NewCapacityInBytes); 29232812Sjmallett 30215976Sjmallett // Copy the elements over. No need to run dtors on PODs. 31215976Sjmallett memcpy(NewElts, this->BeginX, CurSizeBytes); 32215976Sjmallett } else { 33215976Sjmallett // If this wasn't grown from the inline copy, grow the allocated space. 34215976Sjmallett NewElts = realloc(this->BeginX, NewCapacityInBytes); 35215976Sjmallett } 36215976Sjmallett 37215976Sjmallett this->EndX = (char*)NewElts+CurSizeBytes; 38215976Sjmallett this->BeginX = NewElts; 39215976Sjmallett this->CapacityX = (char*)this->BeginX + NewCapacityInBytes; 40215976Sjmallett} 41215976Sjmallett