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| author | Jay Foad <jay.foad@gmail.com> | 2009-05-23 17:57:59 +0000 |
|---|---|---|
| committer | Jay Foad <jay.foad@gmail.com> | 2009-05-23 17:57:59 +0000 |
| commit | a14be3b26472b31af81c988edb0b9c05711f875f (patch) | |
| tree | b83b0a2c75abdac8d8e8377d962501fc30184c10 | |
| parent | 6bb4958543e2b7ff412b3dac3ebf01a184193ad7 (diff) | |
Work around a page size issue on Cygwin.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72332 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/System/Unix/Process.inc | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/System/Unix/Process.inc b/lib/System/Unix/Process.inc index e4f37a1ff5..74b9bb8b14 100644 --- a/lib/System/Unix/Process.inc +++ b/lib/System/Unix/Process.inc @@ -42,7 +42,12 @@ using namespace sys; unsigned Process::GetPageSize() { -#if defined(HAVE_GETPAGESIZE) +#if defined(__CYGWIN__) + // On Cygwin, getpagesize() returns 64k but the page size for the purposes of + // memory protection and mmap() is 4k. + // See http://www.cygwin.com/ml/cygwin/2009-01/threads.html#00492 + static const int page_size = 0x1000; +#elif defined(HAVE_GETPAGESIZE) static const int page_size = ::getpagesize(); #elif defined(HAVE_SYSCONF) static long page_size = ::sysconf(_SC_PAGE_SIZE); |