compiler/glsl: handle case where we have multiple users for types

Both Vulkan and OpenGL might be using glsl_types simultaneously or we
can also have multiple concurrent Vulkan instances using glsl_types.
Patch adds a one time init to track number of users and will release
types only when last user calls _glsl_type_singleton_decref().

This change fixes glsl_type memory leaks we have with anv driver.

v2: reuse hash_mutex, cleanup, apply fix also to radv driver and
    rename helper functions (Jason)

v3: move init, destroy to happen on GL context init and destroy

Signed-off-by: Tapani Pälli <[email protected]>
Reviewed-by: Timothy Arceri <[email protected]>
Reviewed-by: Jason Ekstrand <[email protected]>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/compiler/glsl/glsl_parser_extras.h b/src/compiler/glsl/glsl_parser_extras.h
index 8646ba6cadd..f92d2160aac 100644
--- a/src/compiler/glsl/glsl_parser_extras.h
+++ b/src/compiler/glsl/glsl_parser_extras.h
@@ -1010,6 +1010,8 @@ extern int glcpp_preprocess(void *ctx, const char **shader, char **info_log,
                             struct _mesa_glsl_parse_state *state,
                             struct gl_context *gl_ctx);
 
+extern void _mesa_init_shader_compiler_types(void);
+extern void _mesa_destroy_shader_compiler_types(void);
 extern void _mesa_destroy_shader_compiler(void);
 extern void _mesa_destroy_shader_compiler_caches(void);