Remove guard pages option from uncommitted page reservations

It's only implemented for non-linux unix-like systems and it's quite
challenging to get it right everywhere else. So, instead of giving the
user the illusion that guard pages might be available we just drop
them.

Change-Id: I7ec74c84f6215f22bd10758728b18bbecc0adf59
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

1 files changed, 3 insertions, 9 deletions

diff --git a/src/3rdparty/masm/wtf/PageReservation.h b/src/3rdparty/masm/wtf/PageReservation.h
index 15be344fa8..74a136168c 100644
--- a/src/3rdparty/masm/wtf/PageReservation.h
+++ b/src/3rdparty/masm/wtf/PageReservation.h
@@ -104,13 +104,7 @@ public:
     static PageReservation reserve(size_t size, OSAllocator::Usage usage = OSAllocator::UnknownUsage, bool writable = true, bool executable = false)
     {
         ASSERT(isPageAligned(size));
-        return PageReservation(OSAllocator::reserveUncommitted(size, usage, writable, executable), size, writable, executable, false);
-    }
-    
-    static PageReservation reserveWithGuardPages(size_t size, OSAllocator::Usage usage = OSAllocator::UnknownUsage, bool writable = true, bool executable = false)
-    {
-        ASSERT(isPageAligned(size));
-        return PageReservation(OSAllocator::reserveUncommitted(size + pageSize() * 2, usage, writable, executable, true), size, writable, executable, true);
+        return PageReservation(OSAllocator::reserveUncommitted(size, usage, writable, executable), size, writable, executable);
     }
 
     void deallocate()
@@ -129,8 +123,8 @@ public:
     }
 
 private:
-    PageReservation(void* base, size_t size, bool writable, bool executable, bool hasGuardPages)
-        : PageBlock(base, size, hasGuardPages)
+    PageReservation(void* base, size_t size, bool writable, bool executable)
+        : PageBlock(base, size, false)
         , m_committed(0)
         , m_writable(writable)
         , m_executable(executable)