trace: add context pointer sanity checking

To help catch mixed up context pointer bugs in the future, add a
trace_context_check() function and some new assertions.

Reviewed-by: Jose Fonseca <[email protected]>

1 files changed, 15 insertions, 0 deletions

diff --git a/src/gallium/drivers/trace/tr_context.c b/src/gallium/drivers/trace/tr_context.c
index b88f37999e9..538ff4afc9e 100644
--- a/src/gallium/drivers/trace/tr_context.c
+++ b/src/gallium/drivers/trace/tr_context.c
@@ -852,6 +852,8 @@ trace_context_sampler_view_destroy(struct pipe_context *_pipe,
    struct pipe_context *pipe = tr_ctx->pipe;
    struct pipe_sampler_view *view = tr_view->sampler_view;
 
+   assert(_view->context == _pipe);
+
    trace_dump_call_begin("pipe_context", "sampler_view_destroy");
 
    trace_dump_arg(ptr, pipe);
@@ -1610,3 +1612,16 @@ trace_context_create(struct trace_screen *tr_scr,
 error1:
    return pipe;
 }
+
+
+/**
+ * Sanity checker: check that the given context really is a 
+ * trace context (and not the wrapped driver's context).
+ */
+void
+trace_context_check(const struct pipe_context *pipe)
+{
+   struct trace_context *tr_ctx = (struct trace_context *) pipe;
+   assert(tr_ctx->base.destroy == trace_context_destroy);
+}
+