From d2bf77cd88efb15f9ce0f796e414df9f9dbf5a6d Mon Sep 17 00:00:00 2001
From: nihuini <nihuini@tencent.com>
Date: Wed, 24 Jun 2020 15:23:17 +0800
Subject: [PATCH] create new allocator when pre-allocated allocators exhausted,
 fix #1862

---
 src/gpu.cpp | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/src/gpu.cpp b/src/gpu.cpp
index a732d7b04..a8f5b3ccb 100644
--- a/src/gpu.cpp
+++ b/src/gpu.cpp
@@ -1596,8 +1596,10 @@ VkAllocator* VulkanDevice::acquire_blob_allocator() const
         }
     }
 
-    NCNN_LOGE("out of blob allocator");
-    return 0;
+    // pre-allocated allcator exhausted, create new
+    VkAllocator* allocator = new VkBlobAllocator(this);
+    blob_allocators.push_back(allocator);
+    return allocator;
 }
 
 void VulkanDevice::reclaim_blob_allocator(VkAllocator* allocator) const
@@ -1630,8 +1632,10 @@ VkAllocator* VulkanDevice::acquire_staging_allocator() const
         }
     }
 
-    NCNN_LOGE("out of staging allocator");
-    return 0;
+    // pre-allocated allcator exhausted, create new
+    VkAllocator* allocator = new VkStagingAllocator(this);
+    staging_allocators.push_back(allocator);
+    return allocator;
 }
 
 void VulkanDevice::reclaim_staging_allocator(VkAllocator* allocator) const