1 /* Copyright (C) 2011 Wildfire Games. 2 * 3 * Permission is hereby granted, free of charge, to any person obtaining 4 * a copy of this software and associated documentation files (the 5 * "Software"), to deal in the Software without restriction, including 6 * without limitation the rights to use, copy, modify, merge, publish, 7 * distribute, sublicense, and/or sell copies of the Software, and to 8 * permit persons to whom the Software is furnished to do so, subject to 9 * the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included 12 * in all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 15 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 17 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 18 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 19 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 20 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 21 */ 22 23 #ifndef INCLUDED_ALLOCATORS_ALLOCATOR_CHECKER 24 #define INCLUDED_ALLOCATORS_ALLOCATOR_CHECKER 25 26 #include <map> 27 28 /** 29 * allocator test rig. 30 * call from each allocator operation to sanity-check them. 31 * should only be used during debug mode due to serious overhead. 32 **/ 33 class AllocatorChecker 34 { 35 public: OnAllocate(void * p,size_t size)36 void OnAllocate(void* p, size_t size) 37 { 38 const Allocs::value_type item = std::make_pair(p, size); 39 std::pair<Allocs::iterator, bool> ret = allocs.insert(item); 40 ENSURE(ret.second == true); // wasn't already in map 41 } 42 OnDeallocate(void * p,size_t size)43 void OnDeallocate(void* p, size_t size) 44 { 45 Allocs::iterator it = allocs.find(p); 46 if(it == allocs.end()) 47 DEBUG_WARN_ERR(ERR::LOGIC); // freeing invalid pointer 48 else 49 { 50 // size must match what was passed to OnAllocate 51 const size_t allocated_size = it->second; 52 ENSURE(size == allocated_size); 53 54 allocs.erase(it); 55 } 56 } 57 58 /** 59 * allocator is resetting itself, i.e. wiping out all allocs. 60 **/ OnClear()61 void OnClear() 62 { 63 allocs.clear(); 64 } 65 66 private: 67 typedef std::map<void*, size_t> Allocs; 68 Allocs allocs; 69 }; 70 71 #endif // #ifndef INCLUDED_ALLOCATORS_ALLOCATOR_CHECKER 72