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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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Now that the kernel supports MAP_UNINITIALIZE, have the malloc places use
it to get real uninitialized memory on no-mmu systems. This avoids a lot
of normally useless overhead involved in zeroing out all of the memory
(sometimes multiple times).
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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sed -i -e '/Experimentally off - /d' $(grep -rl "Experimentally off - " *)
sed -i -e '/^\/\*[[:space:]]*libc_hidden_proto(/d' $(grep -rl "libc_hidden_proto" *)
should be a nop
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Appears to build fine (several .configs tried)
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things, and avoid potential deadlocks caused when a thread holding a uClibc
internal lock get canceled and terminates without releasing the lock. This
change also provides a single place, bits/uClibc_mutex.h, for thread libraries
to modify to change all instances of internal locking.
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most of global data relocations are back
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missing headers, other jump relocs removed
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this was sent earlier in a different form:
http://www.uclibc.org/lists/uclibc/2004-January/008136.html
find attached a smaller version ... perhaps adding a fprintf to stderr before
calling abort would be nice like in the glibc patch, but whatever
glibc has since adopted a similar fix for their malloc (third hunk, line 1970)
http://sources.redhat.com/cgi-bin/cvsweb.cgi/libc/malloc/malloc.c.diff?r1=1.121&r2=1.122&cvsroot=glibc&f=h
-mike
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instead, but we are not such a system and should not propagate such things.
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Only use MAP_SHARED when mmu-less.
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Lea. It is about 2x faster than the old malloc-930716, and behave itself much
better -- it will properly release memory back to the system, and it uses a
combination of brk() for small allocations and mmap() for larger allocations.
-Erik
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