Merge pull request #1 from mongodb-forks/apply-windows-ssizet-fix

Applied SERVER-22296 [Snappy-1.1.2 Patch]: fix Windows build for ssize_t

Author: erin2722

snappy.cc

@@ -26,6 +26,9 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+// MongoDB customization: includes basetsd.h under Windows where SSIZE_T is declared.
+#include "mongo/platform/basic.h"
+
 #include "snappy-internal.h"
 #include "snappy-sinksource.h"
 #include "snappy.h"
@@ -74,6 +77,16 @@
 #define SNAPPY_PREFETCH(ptr) (void)(ptr)
 #endif
 
+// MongoDB customization: Fixes missing ssize_t under Windows.
+// Used in IncrementalCopy and IncrementalCopyFastPath.
+// See:
+//    https://code.google.com/p/snappy/issues/detail?id=79
+//    http://msdn.microsoft.com/en-us/library/windows/desktop/aa383751(v=vs.85).aspx#SSIZE_T
+//    http://src.chromium.org/viewvc/chrome/trunk/src/third_party/snappy/win32/snappy-stubs-public.h
+#if defined(_WIN32)
+typedef SSIZE_T ssize_t;
+#endif  // _WIN32
+
 #include <algorithm>
 #include <array>
 #include <cstddef>