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authorLasse Collin <lasse.collin@tukaani.org>2007-12-09 00:42:33 +0200
committerLasse Collin <lasse.collin@tukaani.org>2007-12-09 00:42:33 +0200
commit5d018dc03549c1ee4958364712fb0c94e1bf2741 (patch)
tree1b211911fb33fddb3f04b77f99e81df23623ffc4 /src/liblzma/common/allocator.c
downloadxz-5d018dc03549c1ee4958364712fb0c94e1bf2741.tar.xz
Imported to git.
Diffstat (limited to '')
-rw-r--r--src/liblzma/common/allocator.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/src/liblzma/common/allocator.c b/src/liblzma/common/allocator.c
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+++ b/src/liblzma/common/allocator.c
@@ -0,0 +1,57 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file allocator.c
+/// \brief Allocating and freeing memory
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+
+#undef lzma_free
+
+extern void * lzma_attribute((malloc))
+lzma_alloc(size_t size, lzma_allocator *allocator)
+{
+ // Some malloc() variants return NULL if called with size == 0.
+ if (size == 0)
+ size = 1;
+
+ void *ptr;
+
+ if (allocator != NULL && allocator->alloc != NULL)
+ ptr = allocator->alloc(allocator->opaque, 1, size);
+ else
+ ptr = malloc(size);
+
+#if !defined(NDEBUG) && defined(HAVE_MEMSET)
+ // This helps to catch some stupid mistakes.
+ if (ptr != NULL)
+ memset(ptr, 0xFD, size);
+#endif
+
+ return ptr;
+}
+
+
+extern void
+lzma_free(void *ptr, lzma_allocator *allocator)
+{
+ if (allocator != NULL && allocator->free != NULL)
+ allocator->free(allocator->opaque, ptr);
+ else
+ free(ptr);
+
+ return;
+}