Mercurial > hg > graal-compiler
diff src/share/vm/runtime/os.hpp @ 342:37f87013dfd8
6711316: Open source the Garbage-First garbage collector
Summary: First mercurial integration of the code for the Garbage-First garbage collector.
Reviewed-by: apetrusenko, iveresov, jmasa, sgoldman, tonyp, ysr
author | ysr |
---|---|
date | Thu, 05 Jun 2008 15:57:56 -0700 |
parents | fcbfc50865ab |
children | 1ee8caae33af |
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--- a/src/share/vm/runtime/os.hpp Wed Jun 04 13:51:09 2008 -0700 +++ b/src/share/vm/runtime/os.hpp Thu Jun 05 15:57:56 2008 -0700 @@ -105,6 +105,18 @@ static jlong elapsed_counter(); static jlong elapsed_frequency(); + // The "virtual time" of a thread is the amount of time a thread has + // actually run. The first function indicates whether the OS supports + // this functionality for the current thread, and if so: + // * the second enables vtime tracking (if that is required). + // * the third tells whether vtime is enabled. + // * the fourth returns the elapsed virtual time for the current + // thread. + static bool supports_vtime(); + static bool enable_vtime(); + static bool vtime_enabled(); + static double elapsedVTime(); + // Return current local time in a string (YYYY-MM-DD HH:MM:SS). // It is MT safe, but not async-safe, as reading time zone // information may require a lock on some platforms.