[PATCH] D40679: [sanitizer] Introduce a vDSO aware time function, and use it in the allocator [redo]
Aleksey Shlyapnikov via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Fri Dec 1 10:24:08 PST 2017
alekseyshl added inline comments.
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Comment at: lib/sanitizer_common/sanitizer_linux_libcdep.cc:672
+extern "C" SANITIZER_WEAK_ATTRIBUTE void *__vdso_clock_gettime;
+bool CanUseVDSO() {
+ return !SANITIZER_FREEBSD && !SANITIZER_NETBSD &&
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This name is a bit too generic, can we change it to something like CanUseLibcClockGetTime()?
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Comment at: lib/sanitizer_common/sanitizer_linux_libcdep.cc:690
+ } else {
+ internal_clock_gettime(CLOCK_MONOTONIC, &ts);
+ }
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Does it mean that our allocator is going to be slow on BSD? Should we turn release to OS off by default there then?
https://reviews.llvm.org/D40679
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