Hans Boehm 7f0b2601d3 Add heuristic data race detection to sp<> ... Force assignment to read the old pointer value twice, and check that it didn't change in the interim. Previous experience with Skia suggests that this has a high probability of correctly detecting a data race when it occurs, instead of potentially letting the count associated with the old pointer value get decremented twice, and corrupting the heap. This does increase the size of sp assignments, which seem to commonly get inlined. For the general case, we add a third comparison and function call. Some code reformatting to make this consistent with modern conventions and pass automated checks. Test: Booted aosp build. Ran libutils tests. Looked at generated code. Bug: 31227650 Change-Id: Id93a05c6bf10f01ee15ff1bb409611f2058f988f		2017-03-17 17:47:28 -07:00
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utils	Add heuristic data race detection to sp<>	2017-03-17 17:47:28 -07:00