From 12b903f02e974421d2045a01a2effc0882991790 Mon Sep 17 00:00:00 2001
From: Emmanuel Viennet <emmanuel.viennet@gmail.com>
Date: Sun, 22 Aug 2021 07:47:06 +0200
Subject: [PATCH] disable PDF lock (unnecessary in ScoDoc 9)

---
 app/scodoc/sco_pdf.py | 39 +++++++++++++++++++++++++++++----------
 1 file changed, 29 insertions(+), 10 deletions(-)

diff --git a/app/scodoc/sco_pdf.py b/app/scodoc/sco_pdf.py
index 574fb839..bed6ff31 100755
--- a/app/scodoc/sco_pdf.py
+++ b/app/scodoc/sco_pdf.py
@@ -30,13 +30,17 @@
     reportlab n'est pas réentrante: il ne faut qu'une seule opération PDF au même moment.
     Tout accès à ReportLab doit donc être précédé d'un PDFLOCK.acquire()
     et terminé par un PDFLOCK.release()
+
+    En ScoDoc 9, ce n'est pas nécessaire car on est multiptocessus / monothread.
 """
 import io
-import time
-import re
 import os
-import unicodedata
+import queue
+import re
+import threading
+import time
 import traceback
+import unicodedata
 
 import reportlab
 from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer, Frame, PageBreak
@@ -63,7 +67,6 @@ from app.scodoc.sco_utils import (
 from app.scodoc.notes_log import log
 from app.scodoc.sco_exceptions import ScoGenError
 import sco_version
-import six
 
 PAGE_HEIGHT = defaultPageSize[1]
 PAGE_WIDTH = defaultPageSize[0]
@@ -337,14 +340,14 @@ import threading, time, six.moves.queue, six.moves._thread
 
 class PDFLock(object):
     def __init__(self, timeout=15):
-        self.Q = six.moves.queue.Queue(1)
+        self.Q = queue.Queue(1)
         self.timeout = timeout
         self.current_thread = None
         self.nref = 0
 
     def release(self):
         "Release lock. Raise Empty if not acquired first"
-        if self.current_thread == six.moves._thread.get_ident():
+        if self.current_thread == threading.get_ident():
             self.nref -= 1
             if self.nref == 0:
                 log("PDFLock: release from %s" % self.current_thread)
@@ -356,16 +359,32 @@ class PDFLock(object):
 
     def acquire(self):
         "Acquire lock. Raise ScoGenError if can't lock after timeout."
-        if self.current_thread == six.moves._thread.get_ident():
+        if self.current_thread == threading.get_ident():
             self.nref += 1
             return  # deja lock pour ce thread
         try:
             self.Q.put(1, True, self.timeout)
-        except six.moves.queue.Full:
+        except queue.Full:
             raise ScoGenError(msg="Traitement PDF occupé: ré-essayez")
-        self.current_thread = six.moves._thread.get_ident()
+        self.current_thread = threading.get_ident()
         self.nref = 1
         log("PDFLock: granted to %s" % self.current_thread)
 
 
-PDFLOCK = PDFLock()
+class FakeLock:
+    "Pour ScoDoc 9: pas de verrou"
+
+    def __init__(self, timeout=15):
+        self.timeout = timeout
+        self.current_thread = threading.get_ident()
+
+    def acquire(self):
+        assert threading.get_ident() == self.current_thread
+        pass
+
+    def release(self):
+        assert threading.get_ident() == self.current_thread
+        pass
+
+
+PDFLOCK = FakeLock()