Mercurial > hg > truffle
diff src/share/vm/utilities/globalDefinitions.hpp @ 4712:e7dead7e90af
7117303: VM uses non-monotonic time source and complains that it is non-monotonic
Summary: Replaces calls to os::javaTimeMillis(), which does not (and cannot) guarantee monotonicity, in GC code to an equivalent expression that uses os::javaTimeNanos(). os::javaTimeNanos is guaranteed monotonically non-decreasing if the underlying platform provides a monotonic time source. Changes in OS files are to make use of the newly defined constants in globalDefinitions.hpp.
Reviewed-by: dholmes, ysr
| author | johnc |
|---|---|
| date | Mon, 19 Dec 2011 10:02:05 -0800 |
| parents | 436b4a3231bf |
| children | 94ec88ca68e2 |
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--- a/src/share/vm/utilities/globalDefinitions.hpp Fri Dec 16 11:40:00 2011 -0800 +++ b/src/share/vm/utilities/globalDefinitions.hpp Mon Dec 19 10:02:05 2011 -0800 @@ -175,6 +175,9 @@ const int MICROUNITS = 1000000; // micro units per base unit const int NANOUNITS = 1000000000; // nano units per base unit +const jlong NANOSECS_PER_SEC = CONST64(1000000000); +const jint NANOSECS_PER_MILLISEC = 1000000; + inline const char* proper_unit_for_byte_size(size_t s) { if (s >= 10*M) { return "M";