From 14fa35fb18d367ec58cd56dee8ebc8f207062d6c Mon Sep 17 00:00:00 2001
From: Artem Pavlenko <artem@mapnik.org>
Date: Sat, 10 Jan 2009 23:30:33 +0000
Subject: [PATCH] + enable multiple python threads with Cairo rennderer patch
 from jonb

---
 bindings/python/mapnik_python.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/bindings/python/mapnik_python.cpp b/bindings/python/mapnik_python.cpp
index cb89c1481..fc20381e1 100644
--- a/bindings/python/mapnik_python.cpp
+++ b/bindings/python/mapnik_python.cpp
@@ -91,16 +91,20 @@ void render2(const mapnik::Map& map,mapnik::Image32& image)
 
 void render3(const mapnik::Map& map,PycairoSurface* surface, unsigned offset_x = 0, unsigned offset_y = 0)
 {
+    Py_BEGIN_ALLOW_THREADS
     Cairo::RefPtr<Cairo::Surface> s(new Cairo::Surface(surface->surface));
     mapnik::cairo_renderer<Cairo::Surface> ren(map,s,offset_x, offset_y);
     ren.apply();
+    Py_END_ALLOW_THREADS
 }
 
 void render4(const mapnik::Map& map,PycairoSurface* surface)
 {
+    Py_BEGIN_ALLOW_THREADS
     Cairo::RefPtr<Cairo::Surface> s(new Cairo::Surface(surface->surface));
     mapnik::cairo_renderer<Cairo::Surface> ren(map,s);
     ren.apply();
+    Py_END_ALLOW_THREADS
 }
 
 #endif