bit_allocator.cpp
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1 /*
2  * Copyright (c) 2012, Willow Garage, Inc.
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29 
30 #include "rviz/bit_allocator.h"
31 
32 namespace rviz
33 {
34 
36  : allocated_bits_( 0 )
37 {}
38 
40 {
41  uint32_t mask = 1;
42  for( int i = 0; i < 32; i++ )
43  {
44  if( (mask & allocated_bits_) == 0 )
45  {
46  allocated_bits_ |= mask;
47  return mask;
48  }
49 
50  mask <<= 1;
51  }
52  return 0;
53 }
54 
55 void BitAllocator::freeBits( uint32_t bits )
56 {
57  allocated_bits_ &= ~bits;
58 }
59 
60 } // end namespace rviz
BitAllocator()
Constructor. All bits are free initially.
uint32_t allocated_bits_
Definition: bit_allocator.h:52
void freeBits(uint32_t bits)
Free the given bits.
uint32_t allocBit()
Return a uint32 with a single bit "on" (previously unused), or a 0 if all bits are already allocated...


rviz
Author(s): Dave Hershberger, David Gossow, Josh Faust
autogenerated on Wed Aug 28 2019 04:01:50