Mesa (master): anv/entrypoints: Dump useful data if mako throws an exception

[Jason Ekstrand]

Module: Mesa
Branch: master
Commit: 3720d913dd39852be7debfa17823f730a77bb478
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=3720d913dd39852be7debfa17823f730a77bb478

Author: Jason Ekstrand <jason.ekstrand at intel.com>
Date:   Tue Sep 19 16:05:35 2017 -0700

anv/entrypoints: Dump useful data if mako throws an exception

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin at intel.com>

---

 src/intel/vulkan/anv_entrypoints_gen.py | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

diff --git a/src/intel/vulkan/anv_entrypoints_gen.py b/src/intel/vulkan/anv_entrypoints_gen.py
index ac1c193c63..23bc854218 100644
--- a/src/intel/vulkan/anv_entrypoints_gen.py
+++ b/src/intel/vulkan/anv_entrypoints_gen.py
@@ -371,11 +371,23 @@ def main():
 
     # For outputting entrypoints.h we generate a anv_EntryPoint() prototype
     # per entry point.
-    with open(os.path.join(args.outdir, 'anv_entrypoints.h'), 'wb') as f:
-        f.write(TEMPLATE_H.render(entrypoints=entrypoints,
-                                  filename=os.path.basename(__file__)))
-    with open(os.path.join(args.outdir, 'anv_entrypoints.c'), 'wb') as f:
-        f.write(gen_code(entrypoints))
+    try:
+        with open(os.path.join(args.outdir, 'anv_entrypoints.h'), 'wb') as f:
+            f.write(TEMPLATE_H.render(entrypoints=entrypoints,
+                                      filename=os.path.basename(__file__)))
+        with open(os.path.join(args.outdir, 'anv_entrypoints.c'), 'wb') as f:
+            f.write(gen_code(entrypoints))
+    except Exception:
+        # In the even there's an error this imports some helpers from mako
+        # to print a useful stack trace and prints it, then exits with
+        # status 1, if python is run with debug; otherwise it just raises
+        # the exception
+        if __debug__:
+            import sys
+            from mako import exceptions
+            sys.stderr.write(exceptions.text_error_template().render() + '\n')
+            sys.exit(1)
+        raise
 
 
 if __name__ == '__main__':