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comparison src/share/vm/runtime/os.hpp @ 342:37f87013dfd8

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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
comparison
equal deleted inserted replaced
189:0b27f3512f9e 342:37f87013dfd8
103 103
104 // Interface to the performance counter 104 // Interface to the performance counter
105 static jlong elapsed_counter(); 105 static jlong elapsed_counter();
106 static jlong elapsed_frequency(); 106 static jlong elapsed_frequency();
107 107
108 // The "virtual time" of a thread is the amount of time a thread has
109 // actually run. The first function indicates whether the OS supports
110 // this functionality for the current thread, and if so:
111 // * the second enables vtime tracking (if that is required).
112 // * the third tells whether vtime is enabled.
113 // * the fourth returns the elapsed virtual time for the current
114 // thread.
115 static bool supports_vtime();
116 static bool enable_vtime();
117 static bool vtime_enabled();
118 static double elapsedVTime();
119
108 // Return current local time in a string (YYYY-MM-DD HH:MM:SS). 120 // Return current local time in a string (YYYY-MM-DD HH:MM:SS).
109 // It is MT safe, but not async-safe, as reading time zone 121 // It is MT safe, but not async-safe, as reading time zone
110 // information may require a lock on some platforms. 122 // information may require a lock on some platforms.
111 static char* local_time_string(char *buf, size_t buflen); 123 static char* local_time_string(char *buf, size_t buflen);
112 // Fill in buffer with current local time as an ISO-8601 string. 124 // Fill in buffer with current local time as an ISO-8601 string.