Just had this issue, for me it was a corrupted workspace osgi cache. The solution was to run eclipse with the -clean parameter as
eclipse.exe -clean
After some time, eclipse required to clean up, the workspace selection dialog popped up and I could start eclipse normally again.
The -clean parameter is documented in the eclipse help
与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…
