1 files changed, 198 insertions, 0 deletions
diff --git a/layers/vk_layer_table.cpp b/layers/vk_layer_table.cpp
new file mode 100644
index 00000000..5fbec8ae
--- /dev/null
+++ b/layers/vk_layer_table.cpp
@@ -0,0 +1,198 @@
+/*
+ * Vulkan
+ *
+ * Copyright (C) 2014 LunarG, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+#include <assert.h>
+#include <unordered_map>
+#include "vk_dispatch_table_helper.h"
+#include "vk_layer.h"
+#include "vk_layer_table.h"
+static device_table_map tableMap;
+static instance_table_map tableInstanceMap;
+
+#define DISPATCH_MAP_DEBUG 0
+
+// Map lookup must be thread safe
+VkLayerDispatchTable *device_dispatch_table(VkObject object)
+{
+    dispatch_key key = get_dispatch_key(object);
+    device_table_map::const_iterator it = tableMap.find((void *) key);
+    assert(it != tableMap.end() && "Not able to find device dispatch entry");
+    return it->second;
+}
+
+VkLayerInstanceDispatchTable *instance_dispatch_table(VkObject object)
+{
+    dispatch_key key = get_dispatch_key(object);
+    instance_table_map::const_iterator it = tableInstanceMap.find((void *) key);
+#if DISPATCH_MAP_DEBUG
+    if (it != tableInstanceMap.end()) {
+        fprintf(stderr, "instance_dispatch_table: map: %p, object: %p, key: %p, table: %p\n", &tableInstanceMap, object, key, it->second);
+    } else {
+        fprintf(stderr, "instance_dispatch_table: map: %p, object: %p, key: %p, table: UNKNOWN\n", &tableInstanceMap, object, key);
+    }
+#endif
+    assert(it != tableInstanceMap.end() && "Not able to find instance dispatch entry");
+    return it->second;
+}
+
+void destroy_dispatch_table(device_table_map &map, dispatch_key key)
+{
+    device_table_map::const_iterator it = map.find((void *) key);
+#if DISPATCH_MAP_DEBUG
+    if (it != map.end()) {
+        fprintf(stderr, "destroy device dispatch_table: map: %p, key: %p, table: %p\n", &map, key, it->second);
+    } else {
+        fprintf(stderr, "destroy device dispatch table: map: %p, key: %p, table: UNKNOWN\n", &map, key);
+        assert(it != map.end());
+    }
+#endif
+    map.erase(key);
+}
+
+void destroy_dispatch_table(instance_table_map &map, dispatch_key key)
+{
+    instance_table_map::const_iterator it = map.find((void *) key);
+#if DISPATCH_MAP_DEBUG
+    if (it != map.end()) {
+        fprintf(stderr, "destroy instance dispatch_table: map: %p, key: %p, table: %p\n", &map, key, it->second);
+    } else {
+        fprintf(stderr, "destroy instance dispatch table: map: %p, key: %p, table: UNKNOWN\n", &map, key);
+        assert(it != map.end());
+    }
+#endif
+    map.erase(key);
+}
+
+void destroy_device_dispatch_table(dispatch_key key)
+{
+    destroy_dispatch_table(tableMap, key);
+}
+
+void destroy_instance_dispatch_table(dispatch_key key)
+{
+    destroy_dispatch_table(tableInstanceMap, key);
+}
+
+VkLayerDispatchTable *get_dispatch_table(device_table_map &map, VkObject object)
+{
+    dispatch_key key = get_dispatch_key(object);
+    device_table_map::const_iterator it = map.find((void *) key);
+#if DISPATCH_MAP_DEBUG
+    if (it != map.end()) {
+        fprintf(stderr, "instance_dispatch_table: map: %p, object: %p, key: %p, table: %p\n", &tableInstanceMap, object, key, it->second);
+    } else {
+        fprintf(stderr, "instance_dispatch_table: map: %p, object: %p, key: %p, table: UNKNOWN\n", &tableInstanceMap, object, key);
+    }
+#endif
+    assert(it != map.end() && "Not able to find device dispatch entry");
+    return it->second;
+}
+
+VkLayerInstanceDispatchTable *get_dispatch_table(instance_table_map &map, VkObject object)
+{
+//    VkLayerInstanceDispatchTable *pDisp = *(VkLayerInstanceDispatchTable **) object;
+    dispatch_key key = get_dispatch_key(object);
+    instance_table_map::const_iterator it = map.find((void *) key);
+#if DISPATCH_MAP_DEBUG
+    if (it != map.end()) {
+        fprintf(stderr, "instance_dispatch_table: map: %p, object: %p, key: %p, table: %p\n", &tableInstanceMap, object, key, it->second);
+    } else {
+        fprintf(stderr, "instance_dispatch_table: map: %p, object: %p, key: %p, table: UNKNOWN\n", &tableInstanceMap, object, key);
+    }
+#endif
+    assert(it != map.end() && "Not able to find instance dispatch entry");
+    return it->second;
+}
+
+/* Various dispatchable objects will use the same underlying dispatch table if they
+ * are created from that "parent" object. Thus use pointer to dispatch table
+ * as the key to these table maps.
+ *    Instance -> PhysicalDevice
+ *    Device -> CmdBuffer or Queue
+ * If use the object themselves as key to map then implies Create entrypoints have to be intercepted
+ * and a new key inserted into map */
+VkLayerInstanceDispatchTable * initInstanceTable(instance_table_map &map, const VkBaseLayerObject *instancew)
+{
+    VkLayerInstanceDispatchTable *pTable;
+    assert(instancew);
+    VkLayerInstanceDispatchTable **ppDisp = (VkLayerInstanceDispatchTable **) instancew->baseObject;
+
+    std::unordered_map<void *, VkLayerInstanceDispatchTable *>::const_iterator it = map.find((void *) *ppDisp);
+    if (it == map.end())
+    {
+        pTable =  new VkLayerInstanceDispatchTable;
+        map[(void *) *ppDisp] = pTable;
+#if DISPATCH_MAP_DEBUG
+        fprintf(stderr, "New, Instance: map: %p, base object: %p, key: %p, table: %p\n", &map, instancew, *ppDisp, pTable);
+#endif
+        assert(map.size() <= 1 && "Instance dispatch table map has more than one entry");
+    } else
+    {
+#if DISPATCH_MAP_DEBUG
+        fprintf(stderr, "Instance: map: %p, base object: %p, key: %p, table: %p\n", &map, instancew, *ppDisp, it->second);
+#endif
+        return it->second;
+    }
+
+    layer_init_instance_dispatch_table(pTable, instancew);
+
+    return pTable;
+}
+
+VkLayerInstanceDispatchTable * initInstanceTable(const VkBaseLayerObject *instancew)
+{
+    return initInstanceTable(tableInstanceMap, instancew);
+}
+
+VkLayerDispatchTable * initDeviceTable(device_table_map &map, const VkBaseLayerObject *devw)
+{
+    VkLayerDispatchTable *layer_device_table = NULL;
+    assert(devw);
+    VkLayerDispatchTable **ppDisp = (VkLayerDispatchTable **) (devw->baseObject);
+    VkLayerDispatchTable *base_device_table = *ppDisp;
+
+    std::unordered_map<void *, VkLayerDispatchTable *>::const_iterator it = map.find((void *) base_device_table);
+    if (it == map.end())
+    {
+        layer_device_table =  new VkLayerDispatchTable;
+        map[(void *) base_device_table] = layer_device_table;
+#if DISPATCH_MAP_DEBUG
+        fprintf(stderr, "New, Device: map: %p, base object: %p, key: %p, table: %p\n", &map, devw, *ppDisp, layer_device_table);
+#endif
+    } else
+    {
+#if DISPATCH_MAP_DEBUG
+        fprintf(stderr, "Device: map: %p, base object: %p, key: %p, table: %p\n", &map, devw, *ppDisp, it->second);
+#endif
+        return it->second;
+    }
+
+    layer_initialize_dispatch_table(layer_device_table, devw);
+
+    return layer_device_table;
+}
+
+VkLayerDispatchTable * initDeviceTable(const VkBaseLayerObject *devw)
+{
+    return initDeviceTable(tableMap, devw);
+}