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comparison src/share/vm/gc_implementation/shared/gcTraceTime.cpp @ 13400:86e6d691f2e1

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8028128: Add a type safe alternative for working with counter based data Reviewed-by: dholmes, egahlin
author mgronlun
date Sat, 23 Nov 2013 12:25:13 +0100
parents f2110083203d
children 0982ec23da03
comparison
equal deleted inserted replaced
13399:260ac69dc096 13400:86e6d691f2e1
29 #include "runtime/os.hpp" 29 #include "runtime/os.hpp"
30 #include "runtime/safepoint.hpp" 30 #include "runtime/safepoint.hpp"
31 #include "runtime/thread.inline.hpp" 31 #include "runtime/thread.inline.hpp"
32 #include "runtime/timer.hpp" 32 #include "runtime/timer.hpp"
33 #include "utilities/ostream.hpp" 33 #include "utilities/ostream.hpp"
34 #include "utilities/ticks.inline.hpp"
34 35
35 36
36 GCTraceTime::GCTraceTime(const char* title, bool doit, bool print_cr, GCTimer* timer) : 37 GCTraceTime::GCTraceTime(const char* title, bool doit, bool print_cr, GCTimer* timer) :
37 _title(title), _doit(doit), _print_cr(print_cr), _timer(timer) { 38 _title(title), _doit(doit), _print_cr(print_cr), _timer(timer), _start_counter() {
38 if (_doit || _timer != NULL) { 39 if (_doit || _timer != NULL) {
39 _start_counter = os::elapsed_counter(); 40 _start_counter.stamp();
40 } 41 }
41 42
42 if (_timer != NULL) { 43 if (_timer != NULL) {
43 assert(SafepointSynchronize::is_at_safepoint(), "Tracing currently only supported at safepoints"); 44 assert(SafepointSynchronize::is_at_safepoint(), "Tracing currently only supported at safepoints");
44 assert(Thread::current()->is_VM_thread(), "Tracing currently only supported from the VM thread"); 45 assert(Thread::current()->is_VM_thread(), "Tracing currently only supported from the VM thread");
55 gclog_or_tty->flush(); 56 gclog_or_tty->flush();
56 } 57 }
57 } 58 }
58 59
59 GCTraceTime::~GCTraceTime() { 60 GCTraceTime::~GCTraceTime() {
60 jlong stop_counter = 0; 61 Ticks stop_counter;
61 62
62 if (_doit || _timer != NULL) { 63 if (_doit || _timer != NULL) {
63 stop_counter = os::elapsed_counter(); 64 stop_counter.stamp();
64 } 65 }
65 66
66 if (_timer != NULL) { 67 if (_timer != NULL) {
67 _timer->register_gc_phase_end(stop_counter); 68 _timer->register_gc_phase_end(stop_counter);
68 } 69 }
69 70
70 if (_doit) { 71 if (_doit) {
71 double seconds = TimeHelper::counter_to_seconds(stop_counter - _start_counter); 72 const Tickspan duration = stop_counter - _start_counter;
73 double duration_in_seconds = TicksToTimeHelper::seconds(duration);
72 if (_print_cr) { 74 if (_print_cr) {
73 gclog_or_tty->print_cr(", %3.7f secs]", seconds); 75 gclog_or_tty->print_cr(", %3.7f secs]", duration_in_seconds);
74 } else { 76 } else {
75 gclog_or_tty->print(", %3.7f secs]", seconds); 77 gclog_or_tty->print(", %3.7f secs]", duration_in_seconds);
76 } 78 }
77 gclog_or_tty->flush(); 79 gclog_or_tty->flush();
78 } 80 }
79 } 81 }