uc_dynamic_memory.cpp

00001 /*
00002  * Copyright (C) 2014 Pavel Kirienko <pavel.kirienko@gmail.com>
00003  */
00004 
00005 #include <uavcan/dynamic_memory.hpp>
00006 
00007 namespace uavcan
00008 {
00009 /*
00010  * LimitedPoolAllocator
00011  */
00012 void* LimitedPoolAllocator::allocate(std::size_t size)
00013 {
00014     if (used_blocks_ < max_blocks_)
00015     {
00016         used_blocks_++;
00017         return allocator_.allocate(size);
00018     }
00019     else
00020     {
00021         return UAVCAN_NULLPTR;
00022     }
00023 }
00024 
00025 void LimitedPoolAllocator::deallocate(const void* ptr)
00026 {
00027     allocator_.deallocate(ptr);
00028 
00029     UAVCAN_ASSERT(used_blocks_ > 0);
00030     if (used_blocks_ > 0)
00031     {
00032         used_blocks_--;
00033     }
00034 }
00035 
00036 uint16_t LimitedPoolAllocator::getBlockCapacity() const
00037 {
00038     return min(max_blocks_, allocator_.getBlockCapacity());
00039 }
00040 
00041 }