[Quantlib-dev] [ quantlib-Patches-3578375 ] thread-safe session handling using tss

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Patches item #3578375, was opened at 2012-10-19 05:48
Message generated for change (Tracker Item Submitted) made by rglarix
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Riccardo Ghetta (rglarix)
Assigned to: Nobody/Anonymous (nobody)
Summary: thread-safe session handling using tss

Initial Comment:
QuantLib default session handling is thread safe only if you allocate all sessions beforehand, otherwise adding/removing a session id changes the map object potentially corrupting other thread iterators.
This patch uses boost::thread_specific_ptr to have a per-thread session id. Since the variable used is thread-private and inherently linked to the thread, no sessionId() method is needed.
The patch is enabled by defining QL_ENABLE_SESSIONS_TSS in config.hpp
Without the define QuantLib uses the old code.

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