Mercurial > hg > batch-feature-extraction-tool
view Lib/fftw-3.2.1/kernel/kalloc.c @ 1:e86e9c111b29
Updates stuff that potentially fixes the memory leak and also makes it work on Windows and Linux (Need to test). Still have to fix fftw include for linux in Jucer.
author | David Ronan <d.m.ronan@qmul.ac.uk> |
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date | Thu, 09 Jul 2015 15:01:32 +0100 |
parents | 25bf17994ef1 |
children |
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/* * Copyright (c) 2003, 2007-8 Matteo Frigo * Copyright (c) 2003, 2007-8 Massachusetts Institute of Technology * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #include "ifftw.h" /* ``kernel'' malloc(), with proper memory alignment */ #if defined(HAVE_DECL_MEMALIGN) && !HAVE_DECL_MEMALIGN # if defined(HAVE_MALLOC_H) # include <malloc.h> # else extern void *memalign(size_t, size_t); # endif #endif #if defined(HAVE_DECL_POSIX_MEMALIGN) && !HAVE_DECL_POSIX_MEMALIGN extern int posix_memalign(void **, size_t, size_t); #endif #if defined(macintosh) /* MacOS 9 */ # include <Multiprocessing.h> #endif #define real_free free /* memalign and malloc use ordinary free */ #if defined(WITH_OUR_MALLOC16) && (MIN_ALIGNMENT == 16) /* Our own 16-byte aligned malloc/free. Assumes sizeof(void*) is a power of two <= 8 and that malloc is at least sizeof(void*)-aligned. The main reason for this routine is that, as of this writing, Windows does not include any aligned allocation routines in its system libraries, and instead provides an implementation with a Visual C++ "Processor Pack" that you have to statically link into your program. We do not want to require users to have VC++ (e.g. gcc/MinGW should be fine). Our code should be at least as good as the MS _aligned_malloc, in any case, according to second-hand reports of the algorithm it employs (also based on plain malloc). */ static void *our_malloc16(size_t n) { void *p0, *p; if (!(p0 = malloc(n + 16))) return (void *) 0; p = (void *) (((uintptr_t) p0 + 16) & (~((uintptr_t) 15))); *((void **) p - 1) = p0; return p; } static void our_free16(void *p) { if (p) free(*((void **) p - 1)); } #endif void *X(kernel_malloc)(size_t n) { void *p; #if defined(MIN_ALIGNMENT) # if defined(WITH_OUR_MALLOC16) && (MIN_ALIGNMENT == 16) p = our_malloc16(n); # undef real_free # define real_free our_free16 # elif defined(__FreeBSD__) && (MIN_ALIGNMENT <= 16) /* FreeBSD does not have memalign, but its malloc is 16-byte aligned. */ p = malloc(n); # elif (defined(__MACOSX__) || defined(__APPLE__)) && (MIN_ALIGNMENT <= 16) /* MacOS X malloc is already 16-byte aligned */ p = malloc(n); # elif defined(HAVE_MEMALIGN) p = memalign(MIN_ALIGNMENT, n); # elif defined(HAVE_POSIX_MEMALIGN) /* note: posix_memalign is broken in glibc 2.2.5: it constrains the size, not the alignment, to be (power of two) * sizeof(void*). The bug seems to have been fixed as of glibc 2.3.1. */ if (posix_memalign(&p, MIN_ALIGNMENT, n)) p = (void*) 0; # elif defined(__ICC) || defined(__INTEL_COMPILER) || defined(HAVE__MM_MALLOC) /* Intel's C compiler defines _mm_malloc and _mm_free intrinsics */ p = (void *) _mm_malloc(n, MIN_ALIGNMENT); # undef real_free # define real_free _mm_free # elif defined(_MSC_VER) /* MS Visual C++ 6.0 with a "Processor Pack" supports SIMD and _aligned_malloc/free (uses malloc.h) */ p = (void *) _aligned_malloc(n, MIN_ALIGNMENT); # undef real_free # define real_free _aligned_free # elif defined(macintosh) /* MacOS 9 */ p = (void *) MPAllocateAligned(n, # if MIN_ALIGNMENT == 8 kMPAllocate8ByteAligned, # elif MIN_ALIGNMENT == 16 kMPAllocate16ByteAligned, # elif MIN_ALIGNMENT == 32 kMPAllocate32ByteAligned, # else # error "Unknown alignment for MPAllocateAligned" # endif 0); # undef real_free # define real_free MPFree # else /* Add your machine here and send a patch to fftw@fftw.org or (e.g. for Windows) configure --with-our-malloc16 */ # error "Don't know how to malloc() aligned memory ... try configuring --with-our-malloc16" # endif #else /* !defined(MIN_ALIGNMENT) */ p = malloc(n); #endif return p; } void X(kernel_free)(void *p) { real_free(p); }