Author: Greg Price <[email protected]>
Branch:
Changeset: r62541:3a60f1ff6d07
Date: 2013-03-19 19:47 -0700
http://bitbucket.org/pypy/pypy/changeset/3a60f1ff6d07/
Log: ll2ctypes: Get unmap from ctypes before it's too late
diff --git a/rpython/rtyper/lltypesystem/ll2ctypes.py
b/rpython/rtyper/lltypesystem/ll2ctypes.py
--- a/rpython/rtyper/lltypesystem/ll2ctypes.py
+++ b/rpython/rtyper/lltypesystem/ll2ctypes.py
@@ -105,6 +105,12 @@
else:
assert False # should always generate flags
+ # Map and unmap something just to exercise unmap so that we (lazily)
+ # build the ctypes callable. Otherwise, when we reach unmap below
+ # we may already have a giant map and be unable to fork, as for the
+ # /sbin/ldconfig call inside ctypes.util.find_library().
+ rmmap.mmap(-1, 4096, *flags).close()
+
m = rmmap.mmap(-1, PIECES * PIECE_STRIDE, *flags)
m.close = lambda : None # leak instead of giving a spurious
# error at CPython's shutdown
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