From b83846475bac76268d75f53632faf8aad8cad02c Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Wed, 18 Aug 2010 16:56:39 -0700
Subject: [PATCH] glsl2: Free the shader compiler at dri screen destruction.

Hooray, we can valgrind again without adding suppressions.  This also
adds an interface for use by an implementation of
glReleaseShaderCompiler().
---
 src/glsl/glsl_parser_extras.cpp        | 30 ++++++++++++++++++++++++++
 src/glsl/glsl_parser_extras.h          |  3 +++
 src/mesa/drivers/dri/common/dri_util.c |  2 ++
 3 files changed, 35 insertions(+)

diff --git a/src/glsl/glsl_parser_extras.cpp b/src/glsl/glsl_parser_extras.cpp
index d1bb1ae5ecc..b864218d50d 100644
--- a/src/glsl/glsl_parser_extras.cpp
+++ b/src/glsl/glsl_parser_extras.cpp
@@ -741,3 +741,33 @@ do_common_optimization(exec_list *ir, bool linked)
 
    return progress;
 }
+
+extern "C" {
+
+/**
+ * To be called at GL teardown time, this frees compiler datastructures.
+ *
+ * After calling this, any previously compiled shaders and shader
+ * programs would be invalid.  So this should happen at approximately
+ * program exit.
+ */
+void
+_mesa_destroy_shader_compiler(void)
+{
+   _mesa_destroy_shader_compiler_caches();
+
+   _mesa_glsl_release_types();
+}
+
+/**
+ * Releases compiler caches to trade off performance for memory.
+ *
+ * Intended to be used with glReleaseShaderCompiler().
+ */
+void
+_mesa_destroy_shader_compiler_caches(void)
+{
+   _mesa_glsl_release_functions();
+}
+
+}
diff --git a/src/glsl/glsl_parser_extras.h b/src/glsl/glsl_parser_extras.h
index 9e3cac26e26..b0b1bc31d05 100644
--- a/src/glsl/glsl_parser_extras.h
+++ b/src/glsl/glsl_parser_extras.h
@@ -178,6 +178,9 @@ extern void _mesa_glsl_warning(const YYLTYPE *locp,
 extern "C" {
 extern int preprocess(void *ctx, const char **shader, char **info_log,
 		      const struct gl_extensions *extensions);
+
+extern void _mesa_destroy_shader_compiler();
+extern void _mesa_destroy_shader_compiler_caches();
 }
 
 extern void _mesa_glsl_lexer_ctor(struct _mesa_glsl_parse_state *state,
diff --git a/src/mesa/drivers/dri/common/dri_util.c b/src/mesa/drivers/dri/common/dri_util.c
index 5eb8b62f450..b1a7b3ed342 100644
--- a/src/mesa/drivers/dri/common/dri_util.c
+++ b/src/mesa/drivers/dri/common/dri_util.c
@@ -707,6 +707,8 @@ static void driDestroyScreen(__DRIscreen *psp)
 	 * stream open to the X-server anymore.
 	 */
 
+       _mesa_destroy_shader_compiler();
+
 	if (psp->DriverAPI.DestroyScreen)
 	    (*psp->DriverAPI.DestroyScreen)(psp);
 
-- 
2.30.2