5e6798cb4d
makes illegal free() calls behave in a much more rational way. You'll still probably die, but your stack trace will not have 3 billion pages of recusion inside the memory allocator. * Fix illegal free in the opal_wrapper code. basename() returns a string in a static buffer, so it shouldn't be free()ed. It also shouldn't be left around so long, as another call to basename() may whack the returned buffer. So leave the free and add a strdup() around the basename() call. * Turn off some unneeded debugging in the opal_wrapper code that would list the comamnd to be run, regardless of the -showme option. This commit was SVN r8758.
132 строки
3.6 KiB
C
132 строки
3.6 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "ompi_config.h"
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#include <sys/types.h>
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#include <stdlib.h>
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#include <sys/mman.h>
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#if defined(HAVE___MUNMAP)
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/* here so we only include others if we absolutely have to */
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#elif defined(HAVE_SYSCALL)
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#include <syscall.h>
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#include <unistd.h>
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#elif defined(HAVE_DLSYM)
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#ifndef __USE_GNU
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#define __USE_GNU
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#endif
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#include <dlfcn.h>
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#endif
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#include "opal/memoryhooks/memory_internal.h"
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/*
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* munmap is always intercepted
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*/
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int opal_mem_free_ptmalloc2_munmap(void *start, size_t length, int from_alloc);
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#if defined(HAVE___MUNMAP)
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int __munmap(void* addr, size_t len);
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#endif
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/* intercept munmap, as the user can give back memory that way as well. */
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int
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munmap(void* addr, size_t len)
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{
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return opal_mem_free_ptmalloc2_munmap(addr, len, 0);
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}
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/* three ways to call munmap. Prefered is to just call syscall, so
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that we can intercept both munmap and __munmap. If that isn't
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possible, try calling __munmap from munmap and let __munmap go. If
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that doesn't work, try dlsym */
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int
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opal_mem_free_ptmalloc2_munmap(void *start, size_t length, int from_alloc)
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{
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#if !defined(HAVE___MUNMAP) && !defined(HAVE_SYSCALL) && defined(HAVE_DLSYM)
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static int (*realmunmap)(void*, size_t);
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#endif
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opal_mem_hooks_release_hook(start, length, from_alloc);
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#if defined(HAVE___MUNMAP)
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return __munmap(start, length);
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#elif defined(HAVE_SYSCALL)
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return syscall(__NR_munmap, start, length);
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#elif defined(HAVE_DLSYM)
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if (NULL == realmunmap) {
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union {
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int (*munmap_fp)(void*, size_t);
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void *munmap_p;
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} tmp;
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tmp.munmap_p = dlsym(RTLD_NEXT, "munmap");
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realmunmap = tmp.munmap_fp;
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}
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return realmunmap(start, length);
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#else
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#error "Can not determine how to call munmap"
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#endif
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}
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/*
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* mmap is only intercepted if we have a chance of finding it (ie, a
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* syscall or weak symbol)
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*/
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void* opal_mem_free_ptmalloc2_mmap(void *start, size_t length,
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int prot, int flags,
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int fd, off_t offset,
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int from_alloc);
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#if defined(HAVE___MMAP)
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void* __mmap(void *start, size_t length, int prot, int flags,
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int fd, off_t offset);
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void*
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mmap(void *start, size_t length, int prot, int flags,
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int fd, off_t offset)
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{
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return opal_mem_free_ptmalloc2_mmap(start, length, prot, flags,
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fd, offset, 0);
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}
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#endif /* defined(HAVE___MMAP) */
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void* opal_mem_free_ptmalloc2_mmap(void *start, size_t length,
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int prot, int flags,
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int fd, off_t offset,
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int from_alloc)
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{
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void *tmp;
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#if defined(HAVE___MMAP)
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tmp = __mmap(start, length, prot, flags, fd, offset);
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#else
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tmp = mmap(start, length, prot, flags, fd, offset);
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#endif
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opal_mem_hooks_alloc_hook(tmp, length, from_alloc);
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return tmp;
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}
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