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Fixed PySide image memory leak

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PySide has a known memory leak issue when using QImage. It does not handle the reference counter correctly. I manually adjusted the reference counter to the data as suggested in a bug report by Neil Whelchel. This bug report can be found at https://bugreports.qt.io/browse/PYSIDE-140
This commit is contained in:
Justin Engel 2017-04-11 10:32:43 -04:00 committed by GitHub
parent dd5a8bf9d1
commit c247aa3989
1 changed files with 2 additions and 0 deletions
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pyqtgraph/functions.py
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@ -1188,7 +1188,9 @@ def makeQImage(imgData, alpha=None, copy=True, transpose=True):
if USE_PYSIDE:
ch = ctypes.c_char.from_buffer(imgData, 0)
rcount = ctypes.c_long.from_address(id(ch)).value # Get the reference count of self.data.
img = QtGui.QImage(ch, imgData.shape[1], imgData.shape[0], imgFormat)
ctypes.c_long.from_address(id(ch)).value = rcount # This puts the refcount back where it belongs.
else:
#addr = ctypes.addressof(ctypes.c_char.from_buffer(imgData, 0))
## PyQt API for QImage changed between 4.9.3 and 4.9.6 (I don't know exactly which version it was)