From a459075d26eecc38d6d58116e38f453450191460 Mon Sep 17 00:00:00 2001
From: AUTOMATIC1111 <16777216c@gmail.com>
Date: Tue, 22 Aug 2023 10:41:10 +0300
Subject: actual solution to the uncommon hanging problem that is seemingly
 caused by multiple progress requests working on same tensor

---
 modules/progress.py | 45 ++++++++++++++++++++++-----------------------
 1 file changed, 22 insertions(+), 23 deletions(-)

(limited to 'modules/progress.py')

diff --git a/modules/progress.py b/modules/progress.py
index a25a0113..69921de7 100644
--- a/modules/progress.py
+++ b/modules/progress.py
@@ -95,31 +95,30 @@ def progressapi(req: ProgressRequest):
     predicted_duration = elapsed_since_start / progress if progress > 0 else None
     eta = predicted_duration - elapsed_since_start if predicted_duration is not None else None
 
+    live_preview = None
     id_live_preview = req.id_live_preview
-    shared.state.set_current_image()
-    if opts.live_previews_enable and req.live_preview and shared.state.id_live_preview != req.id_live_preview:
-        image = shared.state.current_image
-        if image is not None:
-            buffered = io.BytesIO()
-
-            if opts.live_previews_image_format == "png":
-                # using optimize for large images takes an enormous amount of time
-                if max(*image.size) <= 256:
-                    save_kwargs = {"optimize": True}
+
+    if opts.live_previews_enable and req.live_preview:
+        shared.state.set_current_image()
+        if shared.state.id_live_preview != req.id_live_preview:
+            image = shared.state.current_image
+            if image is not None:
+                buffered = io.BytesIO()
+
+                if opts.live_previews_image_format == "png":
+                    # using optimize for large images takes an enormous amount of time
+                    if max(*image.size) <= 256:
+                        save_kwargs = {"optimize": True}
+                    else:
+                        save_kwargs = {"optimize": False, "compress_level": 1}
+
                 else:
-                    save_kwargs = {"optimize": False, "compress_level": 1}
-
-            else:
-                save_kwargs = {}
-
-            image.save(buffered, format=opts.live_previews_image_format, **save_kwargs)
-            base64_image = base64.b64encode(buffered.getvalue()).decode('ascii')
-            live_preview = f"data:image/{opts.live_previews_image_format};base64,{base64_image}"
-            id_live_preview = shared.state.id_live_preview
-        else:
-            live_preview = None
-    else:
-        live_preview = None
+                    save_kwargs = {}
+
+                image.save(buffered, format=opts.live_previews_image_format, **save_kwargs)
+                base64_image = base64.b64encode(buffered.getvalue()).decode('ascii')
+                live_preview = f"data:image/{opts.live_previews_image_format};base64,{base64_image}"
+                id_live_preview = shared.state.id_live_preview
 
     return ProgressResponse(active=active, queued=queued, completed=completed, progress=progress, eta=eta, live_preview=live_preview, id_live_preview=id_live_preview, textinfo=shared.state.textinfo)
 
-- 
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