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Memory conflict detection via mapping of the physical heap to control access permissions to the memory

  • US 8,180,986 B2
  • Filed: 09/17/2008
  • Issued: 05/15/2012
  • Est. Priority Date: 09/17/2008
  • Status: Active Grant
First Claim
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1. A method of detecting memory access conflicts, the method comprising:

  • creating a plurality of mappings in a virtual address space of a physical heap used by a process executed on a processor, each of the mappings having a plurality of memory regions and each memory region having an access permission, the creating the plurality of mappings comprises;

    creating a normal heap and a transactional heap both being mappings in the virtual address space of the physical heap and having different virtual address ranges from one another;

    using the normal heap when making non-transactional memory accesses to the physical heap; and

    using the transactional heap when making transactional memory accesses to the physical heap;

    controlling the access permissions of the memory regions in order to detect memory access conflicts; and

    carrying out a static analysis of the process to identify safe instructions where memory access conflicts are not expected and reducing the control of the access permissions in these cases.

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