Accessing a collection of data items in a multithreaded environment
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United States of America Patent
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Jul 7, 2009
Grant Date -
May 13, 2004
app pub date -
Oct 30, 2003
filing date -
Nov 13, 1998
priority date (Note) -
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Abstract
Various techniques for manipulating data using access states of memory, access control fields of pointers and operations, and exception raising and exception trapping in a multithreaded computer system. In particular, the techniques include synchronization support for a thread blocked in a word, demand evalution of values, parallel access of multiple threads to a list, synchronized and unsynchronized access to a data buffer, use of fowarding to avoid checking for an end of a buffer, use of sentinel work to detect access past a data structure, concurrent access to a word of memory using different synchronization access modes, and use of trapping to detect access to restricted memory.
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