project-base/server-skynet-source-3rd-jemalloc
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Stop forcing --enable-munmap on MinGW.

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This is no longer necessary because of the more general chunk
merge/split approach to dealing with map coalescing.
This commit is contained in:
Jason Evans 2015-08-12 11:10:42 -07:00
parent 03bf5b67be
commit 2662ba5449
2 changed files with 1 additions and 8 deletions
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5
INSTALL
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@ -150,10 +150,7 @@ any of the following arguments (not a definitive list) to 'configure':
the virtual memory for later use. munmap() is disabled by default (i.e. the virtual memory for later use. munmap() is disabled by default (i.e.
--disable-munmap is implied) on Linux, which has a quirk in its virtual --disable-munmap is implied) on Linux, which has a quirk in its virtual
memory allocation algorithm that causes semi-permanent VM map holes under memory allocation algorithm that causes semi-permanent VM map holes under
normal jemalloc operation. Conversely, munmap() (actually VirtualFree()) is normal jemalloc operation.
forcefully enabled on MinGW because virtual memory mappings do not
automatically coalesce (nor fragment on demand), and extra bookkeeping
would be required to track mapping boundaries.
--disable-fill --disable-fill
Disable support for junk/zero filling of memory, quarantine, and redzones. Disable support for junk/zero filling of memory, quarantine, and redzones.

4
configure.ac
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@ -881,10 +881,6 @@ fi
], ],
[enable_munmap="${default_munmap}"] [enable_munmap="${default_munmap}"]
) )
if test "x$enable_munmap" = "x0" -a "x${maps_coalesce}" = "x0" ; then
AC_MSG_RESULT([Forcing munmap to avoid non-coalescing map issues])
enable_munmap="1"
fi
if test "x$enable_munmap" = "x1" ; then if test "x$enable_munmap" = "x1" ; then
AC_DEFINE([JEMALLOC_MUNMAP], [ ]) AC_DEFINE([JEMALLOC_MUNMAP], [ ])
fi fi