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| author | Tom Ritter <tom@mozilla.com> | 2018-02-20 12:18:30 -0600 |
|---|---|---|
| committer | wolfbeast <mcwerewolf@gmail.com> | 2018-03-14 11:27:26 +0100 |
| commit | a32b7f7c4e4e31669e0787e6321d74e4db71e514 (patch) | |
| tree | e83acb2eb895162f010e7ff9ee2d39548c4d90b4 /dom/performance/Performance.cpp | |
| parent | bd819cc43653220abdbfe040ba5c721e9861241c (diff) | |
| download | UXP-a32b7f7c4e4e31669e0787e6321d74e4db71e514.tar UXP-a32b7f7c4e4e31669e0787e6321d74e4db71e514.tar.gz UXP-a32b7f7c4e4e31669e0787e6321d74e4db71e514.tar.lz UXP-a32b7f7c4e4e31669e0787e6321d74e4db71e514.tar.xz UXP-a32b7f7c4e4e31669e0787e6321d74e4db71e514.zip | |
Bug 1430173 - Reduce the precision of all explicit clocks to 2ms. r=baku, a=RyanVM
Backport to ESR where we don't have the ResistFingerprinting component.
MozReview-Commit-ID: 9bjycHjR3SF
--HG--
extra : transplant_source : %EA%03%21%0A%E9%3F%8E%CD%7C%D79f%96%85%96%00%5D%7F%95X
Diffstat (limited to 'dom/performance/Performance.cpp')
| -rwxr-xr-x[-rw-r--r--] | dom/performance/Performance.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/dom/performance/Performance.cpp b/dom/performance/Performance.cpp index 17273c55d..8dc239b05 100644..100755 --- a/dom/performance/Performance.cpp +++ b/dom/performance/Performance.cpp @@ -21,6 +21,7 @@ #include "mozilla/dom/PerformanceObserverBinding.h" #include "mozilla/IntegerPrintfMacros.h" #include "mozilla/Preferences.h" +#include "mozilla/TimerClamping.h" #include "WorkerPrivate.h" #include "WorkerRunnable.h" @@ -228,9 +229,9 @@ Performance::ClearResourceTimings() DOMHighResTimeStamp Performance::RoundTime(double aTime) const { - // Round down to the nearest 20us, because if the timer is too accurate people + // Round down to the nearest 2ms, because if the timer is too accurate people // can do nasty timing attacks with it. - const double maxResolutionMs = 0.020; + const double maxResolutionMs = 2; return floor(aTime / maxResolutionMs) * maxResolutionMs; } |