Dean Michael Berris abe04e3295 [XRay][compiler-rt] XRay Buffer Queue ... This implements a simple buffer queue to manage a pre-allocated queue of fixed-sized buffers to hold XRay records. We need this to support Flight Data Recorder (FDR) mode. We also implement this as a sub-library first to allow for development before actually using it in an implementation. Some important properties of the buffer queue: - Thread-safe enqueueing/dequeueing of fixed-size buffers. - Pre-allocation of buffers at construction. This is a re-roll of the previous attempt to submit, because it caused failures in arm and aarch64. Reviewers: majnemer, echristo, rSerge Subscribers: tberghammer, danalbert, srhines, modocache, mehdi_amini, mgorny, llvm-commits Differential Revision: https://reviews.llvm.org/D26232 llvm-svn: 288775		2016-12-06 06:24:08 +00:00
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buffer_queue_test.cc	[XRay][compiler-rt] XRay Buffer Queue	2016-12-06 06:24:08 +00:00
CMakeLists.txt	[XRay][compiler-rt] XRay Buffer Queue	2016-12-06 06:24:08 +00:00
xray_unit_test_main.cc	[XRay][compiler-rt] XRay Buffer Queue	2016-12-06 06:24:08 +00:00