From 07838ff990a74e3acd95de7042042b49ecc51570 Mon Sep 17 00:00:00 2001
From: Jakob Bornecrantz <wallbraker@gmail.com>
Date: Sun, 13 Mar 2011 15:52:52 +0100
Subject: [PATCH] rbug: Use the call mutex

Fixes crashes in [soft|llvm]pipe when replacing shaders
---
 src/gallium/drivers/rbug/rbug_context.c | 206 +++++++++++++++++++++---
 1 file changed, 187 insertions(+), 19 deletions(-)

diff --git a/src/gallium/drivers/rbug/rbug_context.c b/src/gallium/drivers/rbug/rbug_context.c
index 2c3247e09f1..6e2d6ba1efa 100644
--- a/src/gallium/drivers/rbug/rbug_context.c
+++ b/src/gallium/drivers/rbug/rbug_context.c
@@ -44,7 +44,10 @@ rbug_destroy(struct pipe_context *_pipe)
    struct pipe_context *pipe = rb_pipe->pipe;
 
    remove_from_list(&rb_pipe->list);
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->destroy(pipe);
+   rb_pipe->pipe = NULL;
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 
    FREE(rb_pipe);
 }
@@ -112,10 +115,12 @@ rbug_draw_vbo(struct pipe_context *_pipe, const struct pipe_draw_info *info)
    pipe_mutex_lock(rb_pipe->draw_mutex);
    rbug_draw_block_locked(rb_pipe, RBUG_BLOCK_BEFORE);
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    if (!(rb_pipe->curr.fs && rb_pipe->curr.fs->disabled) &&
        !(rb_pipe->curr.gs && rb_pipe->curr.gs->disabled) &&
        !(rb_pipe->curr.vs && rb_pipe->curr.vs->disabled))
       pipe->draw_vbo(pipe, info);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 
    rbug_draw_block_locked(rb_pipe, RBUG_BLOCK_AFTER);
    pipe_mutex_unlock(rb_pipe->draw_mutex);
@@ -128,8 +133,10 @@ rbug_create_query(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    return pipe->create_query(pipe,
                              query_type);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -139,8 +146,10 @@ rbug_destroy_query(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->destroy_query(pipe,
                        query);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -150,8 +159,10 @@ rbug_begin_query(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->begin_query(pipe,
                      query);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -161,8 +172,10 @@ rbug_end_query(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->end_query(pipe,
                    query);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static boolean
@@ -173,11 +186,16 @@ rbug_get_query_result(struct pipe_context *_pipe,
 {
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
+   boolean ret;
 
-   return pipe->get_query_result(pipe,
-                                 query,
-                                 wait,
-                                 result);
+   pipe_mutex_lock(rb_pipe->call_mutex);
+   ret = pipe->get_query_result(pipe,
+                                query,
+                                wait,
+                                result);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
+
+   return ret;
 }
 
 static void *
@@ -186,9 +204,14 @@ rbug_create_blend_state(struct pipe_context *_pipe,
 {
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
+   void *ret;
+
+   pipe_mutex_lock(rb_pipe->call_mutex);
+   ret = pipe->create_blend_state(pipe,
+                                  blend);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 
-   return pipe->create_blend_state(pipe,
-                                   blend);
+   return ret;
 }
 
 static void
@@ -198,8 +221,10 @@ rbug_bind_blend_state(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->bind_blend_state(pipe,
-                              blend);
+                          blend);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -209,8 +234,10 @@ rbug_delete_blend_state(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->delete_blend_state(pipe,
                             blend);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void *
@@ -219,9 +246,14 @@ rbug_create_sampler_state(struct pipe_context *_pipe,
 {
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
+   void *ret;
 
-   return pipe->create_sampler_state(pipe,
-                                     sampler);
+   pipe_mutex_lock(rb_pipe->call_mutex);
+   ret = pipe->create_sampler_state(pipe,
+                                    sampler);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
+
+   return ret;
 }
 
 static void
@@ -232,9 +264,11 @@ rbug_bind_fragment_sampler_states(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->bind_fragment_sampler_states(pipe,
                                       num_samplers,
                                       samplers);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -245,9 +279,11 @@ rbug_bind_vertex_sampler_states(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->bind_vertex_sampler_states(pipe,
                                     num_samplers,
                                     samplers);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -257,8 +293,10 @@ rbug_delete_sampler_state(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->delete_sampler_state(pipe,
                               sampler);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void *
@@ -267,9 +305,14 @@ rbug_create_rasterizer_state(struct pipe_context *_pipe,
 {
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
+   void *ret;
+
+   pipe_mutex_lock(rb_pipe->call_mutex);
+   ret = pipe->create_rasterizer_state(pipe,
+                                       rasterizer);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 
-   return pipe->create_rasterizer_state(pipe,
-                                        rasterizer);
+   return ret;
 }
 
 static void
@@ -279,8 +322,10 @@ rbug_bind_rasterizer_state(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->bind_rasterizer_state(pipe,
                                rasterizer);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -290,8 +335,10 @@ rbug_delete_rasterizer_state(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->delete_rasterizer_state(pipe,
                                  rasterizer);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void *
@@ -300,9 +347,14 @@ rbug_create_depth_stencil_alpha_state(struct pipe_context *_pipe,
 {
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
+   void *ret;
 
-   return pipe->create_depth_stencil_alpha_state(pipe,
-                                                 depth_stencil_alpha);
+   pipe_mutex_lock(rb_pipe->call_mutex);
+   ret = pipe->create_depth_stencil_alpha_state(pipe,
+                                                depth_stencil_alpha);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
+
+   return ret;
 }
 
 static void
@@ -312,8 +364,10 @@ rbug_bind_depth_stencil_alpha_state(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->bind_depth_stencil_alpha_state(pipe,
                                         depth_stencil_alpha);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -323,8 +377,10 @@ rbug_delete_depth_stencil_alpha_state(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->delete_depth_stencil_alpha_state(pipe,
                                           depth_stencil_alpha);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void *
@@ -335,7 +391,10 @@ rbug_create_fs_state(struct pipe_context *_pipe,
    struct pipe_context *pipe = rb_pipe->pipe;
    void *result;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    result = pipe->create_fs_state(pipe, state);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
+
    if (!result)
       return NULL;
 
@@ -350,10 +409,14 @@ rbug_bind_fs_state(struct pipe_context *_pipe,
    struct pipe_context *pipe = rb_pipe->pipe;
    void *fs;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
+
    fs = rbug_shader_unwrap(_fs);
    rb_pipe->curr.fs = rbug_shader(_fs);
    pipe->bind_fs_state(pipe,
                        fs);
+
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -363,7 +426,9 @@ rbug_delete_fs_state(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct rbug_shader *rb_shader = rbug_shader(_fs);
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    rbug_shader_destroy(rb_pipe, rb_shader);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void *
@@ -374,7 +439,10 @@ rbug_create_vs_state(struct pipe_context *_pipe,
    struct pipe_context *pipe = rb_pipe->pipe;
    void *result;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    result = pipe->create_vs_state(pipe, state);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
+
    if (!result)
       return NULL;
 
@@ -389,10 +457,14 @@ rbug_bind_vs_state(struct pipe_context *_pipe,
    struct pipe_context *pipe = rb_pipe->pipe;
    void *vs;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
+
    vs = rbug_shader_unwrap(_vs);
    rb_pipe->curr.vs = rbug_shader(_vs);
    pipe->bind_vs_state(pipe,
                        vs);
+
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -402,7 +474,9 @@ rbug_delete_vs_state(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct rbug_shader *rb_shader = rbug_shader(_vs);
 
+   pipe_mutex_unlock(rb_pipe->call_mutex);
    rbug_shader_destroy(rb_pipe, rb_shader);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void *
@@ -413,7 +487,10 @@ rbug_create_gs_state(struct pipe_context *_pipe,
    struct pipe_context *pipe = rb_pipe->pipe;
    void *result;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    result = pipe->create_gs_state(pipe, state);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
+
    if (!result)
       return NULL;
 
@@ -428,10 +505,14 @@ rbug_bind_gs_state(struct pipe_context *_pipe,
    struct pipe_context *pipe = rb_pipe->pipe;
    void *gs;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
+
    gs = rbug_shader_unwrap(_gs);
    rb_pipe->curr.gs = rbug_shader(_gs);
    pipe->bind_gs_state(pipe,
                        gs);
+
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -441,7 +522,9 @@ rbug_delete_gs_state(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct rbug_shader *rb_shader = rbug_shader(_gs);
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    rbug_shader_destroy(rb_pipe, rb_shader);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void *
@@ -451,10 +534,15 @@ rbug_create_vertex_elements_state(struct pipe_context *_pipe,
 {
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
+   void *ret;
 
-   return pipe->create_vertex_elements_state(pipe,
+   pipe_mutex_lock(rb_pipe->call_mutex);
+   ret = pipe->create_vertex_elements_state(pipe,
                                              num_elements,
                                              vertex_elements);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
+
+   return ret;
 }
 
 static void
@@ -464,8 +552,10 @@ rbug_bind_vertex_elements_state(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->bind_vertex_elements_state(pipe,
                                     velems);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -475,8 +565,10 @@ rbug_delete_vertex_elements_state(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->delete_vertex_elements_state(pipe,
                                       velems);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -486,8 +578,10 @@ rbug_set_blend_color(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->set_blend_color(pipe,
                          blend_color);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -497,8 +591,10 @@ rbug_set_stencil_ref(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->set_stencil_ref(pipe,
                          stencil_ref);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -508,8 +604,10 @@ rbug_set_clip_state(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->set_clip_state(pipe,
                         clip);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -529,10 +627,12 @@ rbug_set_constant_buffer(struct pipe_context *_pipe,
       resource = unwrapped_resource;
    }
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->set_constant_buffer(pipe,
                              shader,
                              index,
                              resource);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -545,6 +645,9 @@ rbug_set_framebuffer_state(struct pipe_context *_pipe,
    struct pipe_framebuffer_state *state = NULL;
    unsigned i;
 
+   /* must protect curr status */
+   pipe_mutex_lock(rb_pipe->call_mutex);
+
    rb_pipe->curr.nr_cbufs = 0;
    memset(rb_pipe->curr.cbufs, 0, sizeof(rb_pipe->curr.cbufs));
    rb_pipe->curr.zsbuf = NULL;
@@ -567,6 +670,8 @@ rbug_set_framebuffer_state(struct pipe_context *_pipe,
 
    pipe->set_framebuffer_state(pipe,
                                state);
+
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -576,8 +681,10 @@ rbug_set_polygon_stipple(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->set_polygon_stipple(pipe,
                              poly_stipple);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -587,8 +694,10 @@ rbug_set_scissor_state(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->set_scissor_state(pipe,
                            scissor);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -598,8 +707,10 @@ rbug_set_viewport_state(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->set_viewport_state(pipe,
                             viewport);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -613,6 +724,9 @@ rbug_set_fragment_sampler_views(struct pipe_context *_pipe,
    struct pipe_sampler_view **views = NULL;
    unsigned i;
 
+   /* must protect curr status */
+   pipe_mutex_lock(rb_pipe->call_mutex);
+
    rb_pipe->curr.num_fs_views = 0;
    memset(rb_pipe->curr.fs_views, 0, sizeof(rb_pipe->curr.fs_views));
    memset(rb_pipe->curr.fs_texs, 0, sizeof(rb_pipe->curr.fs_texs));
@@ -629,6 +743,8 @@ rbug_set_fragment_sampler_views(struct pipe_context *_pipe,
    }
 
    pipe->set_fragment_sampler_views(pipe, num, views);
+
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -642,6 +758,9 @@ rbug_set_vertex_sampler_views(struct pipe_context *_pipe,
    struct pipe_sampler_view **views = NULL;
    unsigned i;
 
+   /* must protect curr status */
+   pipe_mutex_lock(rb_pipe->call_mutex);
+
    rb_pipe->curr.num_vs_views = 0;
    memset(rb_pipe->curr.vs_views, 0, sizeof(rb_pipe->curr.vs_views));
    memset(rb_pipe->curr.vs_texs, 0, sizeof(rb_pipe->curr.vs_texs));
@@ -658,6 +777,8 @@ rbug_set_vertex_sampler_views(struct pipe_context *_pipe,
    }
 
    pipe->set_vertex_sampler_views(pipe, num, views);
+
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -671,6 +792,8 @@ rbug_set_vertex_buffers(struct pipe_context *_pipe,
    struct pipe_vertex_buffer *buffers = NULL;
    unsigned i;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
+
    if (num_buffers) {
       memcpy(unwrapped_buffers, _buffers, num_buffers * sizeof(*_buffers));
       for (i = 0; i < num_buffers; i++)
@@ -681,6 +804,8 @@ rbug_set_vertex_buffers(struct pipe_context *_pipe,
    pipe->set_vertex_buffers(pipe,
                             num_buffers,
                             buffers);
+
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -697,7 +822,9 @@ rbug_set_index_buffer(struct pipe_context *_pipe,
       ib = &unwrapped_ib;
    }
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->set_index_buffer(pipe, ib);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -707,7 +834,9 @@ rbug_set_sample_mask(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->set_sample_mask(pipe, sample_mask);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -728,6 +857,7 @@ rbug_resource_copy_region(struct pipe_context *_pipe,
    struct pipe_resource *dst = rb_resource_dst->resource;
    struct pipe_resource *src = rb_resource_src->resource;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->resource_copy_region(pipe,
                               dst,
                               dst_level,
@@ -737,6 +867,7 @@ rbug_resource_copy_region(struct pipe_context *_pipe,
                               src,
                               src_level,
                               src_box);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -749,11 +880,13 @@ rbug_clear(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->clear(pipe,
                buffers,
                rgba,
                depth,
                stencil);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -768,6 +901,7 @@ rbug_clear_render_target(struct pipe_context *_pipe,
    struct pipe_context *pipe = rb_pipe->pipe;
    struct pipe_surface *dst = rb_surface_dst->surface;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->clear_render_target(pipe,
                              dst,
                              rgba,
@@ -775,6 +909,7 @@ rbug_clear_render_target(struct pipe_context *_pipe,
                              dsty,
                              width,
                              height);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -791,6 +926,7 @@ rbug_clear_depth_stencil(struct pipe_context *_pipe,
    struct pipe_context *pipe = rb_pipe->pipe;
    struct pipe_surface *dst = rb_surface_dst->surface;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->clear_depth_stencil(pipe,
                              dst,
                              clear_flags,
@@ -800,6 +936,7 @@ rbug_clear_depth_stencil(struct pipe_context *_pipe,
                              dsty,
                              width,
                              height);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void
@@ -809,8 +946,10 @@ rbug_flush(struct pipe_context *_pipe,
    struct rbug_context *rb_pipe = rbug_context(_pipe);
    struct pipe_context *pipe = rb_pipe->pipe;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    pipe->flush(pipe,
                fence);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static struct pipe_sampler_view *
@@ -824,9 +963,11 @@ rbug_context_create_sampler_view(struct pipe_context *_pipe,
    struct pipe_resource *resource = rb_resource->resource;
    struct pipe_sampler_view *result;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    result = pipe->create_sampler_view(pipe,
                                       resource,
                                       templ);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 
    if (result)
       return rbug_sampler_view_create(rb_pipe, rb_resource, result);
@@ -852,9 +993,11 @@ rbug_context_create_surface(struct pipe_context *_pipe,
    struct pipe_resource *resource = rb_resource->resource;
    struct pipe_surface *result;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    result = pipe->create_surface(pipe,
                                  resource,
                                  surf_tmpl);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 
    if (result)
       return rbug_surface_create(rb_pipe, rb_resource, result);
@@ -865,8 +1008,13 @@ static void
 rbug_context_surface_destroy(struct pipe_context *_pipe,
                              struct pipe_surface *_surface)
 {
-   rbug_surface_destroy(rbug_context(_pipe),
-                        rbug_surface(_surface));
+   struct rbug_context *rb_pipe = rbug_context(_pipe);
+   struct rbug_surface *rb_surface = rbug_surface(_surface);
+
+   pipe_mutex_lock(rb_pipe->call_mutex);
+   rbug_surface_destroy(rb_pipe,
+                        rb_surface);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 
@@ -884,11 +1032,13 @@ rbug_context_get_transfer(struct pipe_context *_context,
    struct pipe_resource *resource = rb_resource->resource;
    struct pipe_transfer *result;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    result = context->get_transfer(context,
                                   resource,
                                   level,
                                   usage,
                                   box);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 
    if (result)
       return rbug_transfer_create(rb_pipe, rb_resource, result);
@@ -899,8 +1049,13 @@ static void
 rbug_context_transfer_destroy(struct pipe_context *_pipe,
                               struct pipe_transfer *_transfer)
 {
-   rbug_transfer_destroy(rbug_context(_pipe),
-                             rbug_transfer(_transfer));
+   struct rbug_context *rb_pipe = rbug_context(_pipe);
+   struct rbug_transfer *rb_transfer =rbug_transfer(_transfer);
+
+   pipe_mutex_lock(rb_pipe->call_mutex);
+   rbug_transfer_destroy(rb_pipe,
+                         rb_transfer);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 static void *
@@ -911,9 +1066,14 @@ rbug_context_transfer_map(struct pipe_context *_context,
    struct rbug_transfer *rb_transfer = rbug_transfer(_transfer);
    struct pipe_context *context = rb_pipe->pipe;
    struct pipe_transfer *transfer = rb_transfer->transfer;
+   void *ret;
 
-   return context->transfer_map(context,
+   pipe_mutex_lock(rb_pipe->call_mutex);
+   ret = context->transfer_map(context,
                                 transfer);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
+
+   return ret;
 }
 
 
@@ -928,9 +1088,11 @@ rbug_context_transfer_flush_region(struct pipe_context *_context,
    struct pipe_context *context = rb_pipe->pipe;
    struct pipe_transfer *transfer = rb_transfer->transfer;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    context->transfer_flush_region(context,
                                   transfer,
                                   box);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 
@@ -943,8 +1105,10 @@ rbug_context_transfer_unmap(struct pipe_context *_context,
    struct pipe_context *context = rb_pipe->pipe;
    struct pipe_transfer *transfer = rb_transfer->transfer;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    context->transfer_unmap(context,
                            transfer);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 
@@ -963,6 +1127,7 @@ rbug_context_transfer_inline_write(struct pipe_context *_context,
    struct pipe_context *context = rb_pipe->pipe;
    struct pipe_resource *resource = rb_resource->resource;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    context->transfer_inline_write(context,
                                   resource,
                                   level,
@@ -971,6 +1136,7 @@ rbug_context_transfer_inline_write(struct pipe_context *_context,
                                   data,
                                   stride,
                                   layer_stride);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 
@@ -983,7 +1149,9 @@ static void rbug_redefine_user_buffer(struct pipe_context *_context,
    struct pipe_context *context = rb_pipe->pipe;
    struct pipe_resource *resource = rb_resource->resource;
 
+   pipe_mutex_lock(rb_pipe->call_mutex);
    context->redefine_user_buffer(context, resource, offset, size);
+   pipe_mutex_unlock(rb_pipe->call_mutex);
 }
 
 
-- 
2.30.2