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-rw-r--r--lib/System/Unix/Process.inc7
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);