Patch from Callum Lewick. Memset patch. See ChangeLog for more details. Thanks Callum !

1 files changed, 140 insertions, 0 deletions

diff --git a/libopenjpeg/opj_malloc.h b/libopenjpeg/opj_malloc.h
new file mode 100644
index 00000000..9b7c8956
--- /dev/null
+++ b/libopenjpeg/opj_malloc.h
@@ -0,0 +1,140 @@
+/*
+ * Copyright (c) 2005, Hervé Drolon, FreeImage Team
+ * Copyright (c) 2007, Callum Lerwick <seg@haxxed.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef __OPJ_MALLOC_H
+#define __OPJ_MALLOC_H
+/**
+@file opj_malloc.h
+@brief Internal functions
+
+The functions in opj_malloc.h are internal utilities used for memory management.
+*/
+
+/** @defgroup MISC MISC - Miscellaneous internal functions */
+/*@{*/
+
+/** @name Exported functions */
+/*@{*/
+/* ----------------------------------------------------------------------- */
+
+/**
+Allocate an uninitialized memory block
+@param size Bytes to allocate
+@return Returns a void pointer to the allocated space, or NULL if there is insufficient memory available
+*/
+#define opj_malloc(size) malloc(size)
+
+/**
+Allocate a memory block with elements initialized to 0
+@param num Blocks to allocate
+@param size Bytes per block to allocate
+@return Returns a void pointer to the allocated space, or NULL if there is insufficient memory available
+*/
+#define opj_calloc(num, size) calloc(num, size)
+
+/**
+Allocate memory aligned to a 16 byte boundry
+@param size Bytes to allocate
+@return Returns a void pointer to the allocated space, or NULL if there is insufficient memory available
+*/
+/* FIXME: These should be set with cmake tests, but we're currently not requiring use of cmake */
+#ifdef WIN32
+	/* Someone should tell the mingw people that their malloc.h ought to provide _mm_malloc() */
+	#ifdef __GNUC__
+		#include <mm_malloc.h>
+		#define HAVE_MM_MALLOC
+	#else /* MSVC, Intel C++ */
+		#include <malloc.h>
+		#ifdef _mm_malloc
+			#define HAVE_MM_MALLOC
+		#endif
+	#endif
+#else /* Not WIN32 */
+	#if defined(__sun)
+		#define HAVE_MEMALIGN
+	/* Linux x86_64 and OSX always align allocations to 16 bytes */
+	#elif !defined(__amd64__) && !defined(__APPLE__)
+		/* FIXME: Yes, this is a big assumption */
+		#define HAVE_POSIX_MEMALIGN
+	#endif
+#endif
+
+#define opj_aligned_malloc(size) malloc(size)
+#define opj_aligned_free(m) free(m)
+
+#ifdef HAVE_MM_MALLOC
+	#undef opj_aligned_malloc
+	#define opj_aligned_malloc(size) _mm_malloc(size, 16)
+	#undef opj_aligned_free
+	#define opj_aligned_free(m) _mm_free(m)
+#endif
+
+#ifdef HAVE_MEMALIGN
+	extern void* memalign(size_t, size_t);
+	#undef opj_aligned_malloc
+	#define opj_aligned_malloc(size) memalign(16, (size))
+	#undef opj_aligned_free
+	#define opj_aligned_free(m) free(m)
+#endif
+
+#ifdef HAVE_POSIX_MEMALIGN
+	#undef opj_aligned_malloc
+	extern int posix_memalign(void**, size_t, size_t);
+
+	static INLINE void* __attribute__ ((malloc)) opj_aligned_malloc(size_t size){
+		void* mem = NULL;
+		posix_memalign(&mem, 16, size);
+		return mem;
+	}
+	#undef opj_aligned_free
+	#define opj_aligned_free(m) free(m)
+#endif
+
+/**
+Reallocate memory blocks.
+@param memblock Pointer to previously allocated memory block
+@param size New size in bytes
+@return Returns a void pointer to the reallocated (and possibly moved) memory block
+*/
+#define opj_realloc(m, s) realloc(m, s)
+
+/**
+Deallocates or frees a memory block.
+@param memblock Previously allocated memory block to be freed
+*/
+#define opj_free(m) free(m)
+
+#ifdef __GNUC__
+#pragma GCC poison malloc calloc realloc free
+#endif
+
+/* ----------------------------------------------------------------------- */
+/*@}*/
+
+/*@}*/
+
+#endif /* __OPJ_MALLOC_H */
+