/*
 * Copyright © 2017 Intel Corporation
 *
 * 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 (including the next
 * paragraph) 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 "vk_debug_report.h"

#include "vk_alloc.h"
#include "vk_common_entrypoints.h"
#include "vk_instance.h"
#include "vk_util.h"

struct vk_debug_report_callback {
   struct vk_object_base                        base;

   /* Link in the 'callbacks' list in anv_instance struct. */
   struct list_head                             link;
   VkDebugReportFlagsEXT                        flags;
   PFN_vkDebugReportCallbackEXT                 callback;
   void *                                       data;
};

VK_DEFINE_NONDISP_HANDLE_CASTS(vk_debug_report_callback, base,
                               VkDebugReportCallbackEXT,
                               VK_OBJECT_TYPE_DEBUG_REPORT_CALLBACK_EXT)

VKAPI_ATTR VkResult VKAPI_CALL
vk_common_CreateDebugReportCallbackEXT(VkInstance _instance,
                                       const VkDebugReportCallbackCreateInfoEXT *pCreateInfo,
                                       const VkAllocationCallbacks *pAllocator,
                                       VkDebugReportCallbackEXT *pCallback)
{
   VK_FROM_HANDLE(vk_instance, instance, _instance);

   struct vk_debug_report_callback *cb =
      vk_alloc2(&instance->alloc, pAllocator,
                sizeof(struct vk_debug_report_callback), 8,
                VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);

   if (!cb)
      return VK_ERROR_OUT_OF_HOST_MEMORY;

   vk_object_base_init(NULL, &cb->base,
                       VK_OBJECT_TYPE_DEBUG_REPORT_CALLBACK_EXT);

   cb->flags = pCreateInfo->flags;
   cb->callback = pCreateInfo->pfnCallback;
   cb->data = pCreateInfo->pUserData;

   mtx_lock(&instance->debug_report.callbacks_mutex);
   list_addtail(&cb->link, &instance->debug_report.callbacks);
   mtx_unlock(&instance->debug_report.callbacks_mutex);

   *pCallback = vk_debug_report_callback_to_handle(cb);

   return VK_SUCCESS;
}

VKAPI_ATTR void VKAPI_CALL
vk_common_DestroyDebugReportCallbackEXT(VkInstance _instance,
                                        VkDebugReportCallbackEXT _callback,
                                        const VkAllocationCallbacks *pAllocator)
{
   VK_FROM_HANDLE(vk_instance, instance, _instance);
   VK_FROM_HANDLE(vk_debug_report_callback, callback, _callback);

   if (callback == NULL)
      return;

   /* Remove from list and destroy given callback. */
   mtx_lock(&instance->debug_report.callbacks_mutex);
   list_del(&callback->link);
   vk_object_base_finish(&callback->base);
   vk_free2(&instance->alloc, pAllocator, callback);
   mtx_unlock(&instance->debug_report.callbacks_mutex);
}

static void
debug_report(struct vk_instance *instance,
             VkDebugReportFlagsEXT flags,
             VkDebugReportObjectTypeEXT object_type,
             uint64_t handle,
             size_t location,
             int32_t messageCode,
             const char* pLayerPrefix,
             const char *pMessage)
{
   /* Allow NULL for convinience, return if no callbacks registered. */
   if (!instance || list_is_empty(&instance->debug_report.callbacks))
      return;

   mtx_lock(&instance->debug_report.callbacks_mutex);

   /* Section 33.2 of the Vulkan 1.0.59 spec says:
    *
    *    "callback is an externally synchronized object and must not be
    *    used on more than one thread at a time. This means that
    *    vkDestroyDebugReportCallbackEXT must not be called when a callback
    *    is active."
    */
   list_for_each_entry(struct vk_debug_report_callback, cb,
                       &instance->debug_report.callbacks, link) {
      if (cb->flags & flags)
         cb->callback(flags, object_type, handle, location, messageCode,
                      pLayerPrefix, pMessage, cb->data);
   }

   mtx_unlock(&instance->debug_report.callbacks_mutex);
}

VKAPI_ATTR void VKAPI_CALL
vk_common_DebugReportMessageEXT(VkInstance _instance,
                                VkDebugReportFlagsEXT flags,
                                VkDebugReportObjectTypeEXT objectType,
                                uint64_t object,
                                size_t location,
                                int32_t messageCode,
                                const char* pLayerPrefix,
                                const char* pMessage)
{
   VK_FROM_HANDLE(vk_instance, instance, _instance);
   debug_report(instance, flags, objectType,
                object, location, messageCode, pLayerPrefix, pMessage);
}

void
vk_debug_report(struct vk_instance *instance,
                VkDebugReportFlagsEXT flags,
                const struct vk_object_base *object,
                size_t location,
                int32_t messageCode,
                const char* pLayerPrefix,
                const char *pMessage)
{
   VkDebugReportObjectTypeEXT object_type =
      object ? object->type : VK_OBJECT_TYPE_UNKNOWN;
   debug_report(instance, flags, object_type, (uint64_t)(uintptr_t)object,
                location, messageCode, pLayerPrefix, pMessage);
}