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| -rw-r--r-- | README | 2 | ||||
| -rw-r--r-- | src/chain.h | 7 |
2 files changed, 8 insertions, 1 deletions
@@ -17,5 +17,5 @@ History pChase was originally written by Doug Pase, during the years 2007-2008. -In 2011, as part of a graduate project on advanced computer architecture, Tim Besard added a few features in order to benchmark the software prefetching capabilities of modern processor generations. +In 2011, as part of a graduate project on advanced computer architecture, Tim Besard added a few features in order to benchmark the software prefetching capabilities of modern processor generations. This included moving the benchmarking code to be generated by a x86 JIT compiler, allowing the benchmark to be parameterised without overhead within the hotpath. diff --git a/src/chain.h b/src/chain.h index d33fa2d..ee3d36a 100644 --- a/src/chain.h +++ b/src/chain.h @@ -23,6 +23,13 @@ // Struct definition // +/* + * Note that the Chain object should always be a Plain Old Data (POD) object, + * because it is used from within JIT-generated assembly code, so we need to + * be able to refer to its data members using the C macro offsetof. This is + * only possible in case of a POD object. + */ + struct Chain { Chain* next; }; |