Fix crash in OpenCV::ReadImageAsync#679
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Fix occasional segfault when running examples/readimage.js
roehling
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Apr 30, 2021
| cv::Mat mbuf(len, 1, CV_64FC1, buf); | ||
| outputmat = cv::imdecode(mbuf, flags); | ||
| success = 1; | ||
| free(buf); |
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This will leak memory if an exception is thrown earlier
| memcpy(buf_new, buf, len); | ||
| Nan::Callback *callback = new Nan::Callback(cb.As<Function>()); | ||
| Nan::AsyncQueueWorker(new AsyncImDecodeWorker(callback, buf, len, flags)); | ||
| Nan::AsyncQueueWorker(new AsyncImDecodeWorker(callback, buf_new, len, flags)); |
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Instead of copying the buffer to mitigate premature garbage collection, it would be better to pass the object itself and make sure that it won't be garbage collected until AsyncImDecodeWorker has completed.
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Okay but i don't know how to do that.
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Fix occasional segfault when running examples/readimage.js