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* mmap.cc (mmap): Drop usage of the same memory area if the same

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region of the same file is mapped twice.
This commit is contained in:
Corinna Vinschen
2001-04-19 07:44:34 +00:00
parent a9467b6835
commit b78d6f6e7b
2 changed files with 8 additions and 3 deletions
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6
winsup/cygwin/mmap.cc
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@@ -499,9 +499,9 @@ mmap (caddr_t addr, size_t len, int prot, int flags, int fd, off_t off)
list *l = mmapped_areas->get_list_by_fd (fd);
/* First check if this mapping matches into the chunk of another
already performed mapping. Only valid for MAP_SHARED and for
MAP_ANON in a special case of MAP_PRIVATE. */
if (l && ((flags & MAP_SHARED) || (fd == -1 && off == 0)))
already performed mapping. Only valid for MAP_ANON in a special
case of MAP_PRIVATE. */
if (l && fd == -1 && off == 0)
{
mmap_record *rec;
if ((rec = l->match (off, len)) != NULL)