mesa: Replace uses of Shared->Mutex with hash-table mutexes

We were locking the Shared->Mutex and then using calling functions like
_mesa_HashInsert that do additional per-hash-table locking internally.

Instead just lock each hash-table's mutex and use functions like
_mesa_HashInsertLocked and the new _mesa_HashRemoveLocked.

In order to do this, we need to remove the locking from
_mesa_HashFindFreeKeyBlock since it will always be called with the
per-hash-table lock taken.

Reviewed-by: Timothy Arceri <t_arceri@yahoo.com.au>
Reviewed-by: Brian Paul <brianp@vmware.com>

1 files changed, 8 insertions, 2 deletions

diff --git a/src/mesa/main/shaderapi.c b/src/mesa/main/shaderapi.c
index ae37e94..3c85b41 100644
--- a/src/mesa/main/shaderapi.c
+++ b/src/mesa/main/shaderapi.c
@@ -305,9 +305,11 @@ create_shader(struct gl_context *ctx, GLenum type)
       return 0;
    }
 
+   _mesa_HashLockMutex(ctx->Shared->ShaderObjects);
    name = _mesa_HashFindFreeKeyBlock(ctx->Shared->ShaderObjects, 1);
    sh = ctx->Driver.NewShader(ctx, name, type);
-   _mesa_HashInsert(ctx->Shared->ShaderObjects, name, sh);
+   _mesa_HashInsertLocked(ctx->Shared->ShaderObjects, name, sh);
+   _mesa_HashUnlockMutex(ctx->Shared->ShaderObjects);
 
    return name;
 }
@@ -319,14 +321,18 @@ create_shader_program(struct gl_context *ctx)
    GLuint name;
    struct gl_shader_program *shProg;
 
+   _mesa_HashLockMutex(ctx->Shared->ShaderObjects);
+
    name = _mesa_HashFindFreeKeyBlock(ctx->Shared->ShaderObjects, 1);
 
    shProg = _mesa_new_shader_program(name);
 
-   _mesa_HashInsert(ctx->Shared->ShaderObjects, name, shProg);
+   _mesa_HashInsertLocked(ctx->Shared->ShaderObjects, name, shProg);
 
    assert(shProg->RefCount == 1);
 
+   _mesa_HashUnlockMutex(ctx->Shared->ShaderObjects);
+
    return name;
 }