1 files changed, 100 insertions, 0 deletions
diff --git a/old/botan/src/alloc/system_alloc/defalloc.cpp b/old/botan/src/alloc/system_alloc/defalloc.cpp
new file mode 100644
index 0000000..8791c74
--- /dev/null
+++ b/old/botan/src/alloc/system_alloc/defalloc.cpp
@@ -0,0 +1,100 @@
+/*
+* Basic Allocators
+* (C) 1999-2007 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#include <botan/defalloc.h>
+#include <botan/libstate.h>
+#include <botan/util.h>
+#include <cstdlib>
+#include <cstring>
+
+namespace Botan {
+
+namespace {
+
+/*
+* Perform Memory Allocation
+*/
+void* do_malloc(u32bit n, bool do_lock)
+   {
+   void* ptr = std::malloc(n);
+
+   if(!ptr)
+      return 0;
+
+   if(do_lock)
+      lock_mem(ptr, n);
+
+   std::memset(ptr, 0, n);
+   return ptr;
+   }
+
+/*
+* Perform Memory Deallocation
+*/
+void do_free(void* ptr, u32bit n, bool do_lock)
+   {
+   if(!ptr)
+      return;
+
+   std::memset(ptr, 0, n);
+   if(do_lock)
+      unlock_mem(ptr, n);
+
+   std::free(ptr);
+   }
+
+}
+
+/*
+* Malloc_Allocator's Allocation
+*/
+void* Malloc_Allocator::allocate(u32bit n)
+   {
+   return do_malloc(n, false);
+   }
+
+/*
+* Malloc_Allocator's Deallocation
+*/
+void Malloc_Allocator::deallocate(void* ptr, u32bit n)
+   {
+   do_free(ptr, n, false);
+   }
+
+/*
+* Locking_Allocator's Allocation
+*/
+void* Locking_Allocator::alloc_block(u32bit n)
+   {
+   return do_malloc(n, true);
+   }
+
+/*
+* Locking_Allocator's Deallocation
+*/
+void Locking_Allocator::dealloc_block(void* ptr, u32bit n)
+   {
+   do_free(ptr, n, true);
+   }
+
+/*
+* Get an allocator
+*/
+Allocator* Allocator::get(bool locking)
+   {
+   std::string type = "";
+   if(!locking)
+      type = "malloc";
+
+   Allocator* alloc = global_state().get_allocator(type);
+   if(alloc)
+      return alloc;
+
+   throw Exception("Couldn't find an allocator to use in get_allocator");
+   }
+
+}