Trace uses imprecise timer in POSIX [CORE3970]

[firebird-issue-importer]

Submitted by: @dmitry-starodubov

Assigned to: @dmitry-starodubov

There is query_performance_counter/query_performance_frequency functions, used by trace:
#⁠if defined(WIN_NT)
...
#⁠elif defined(HAVE_CLOCK_GETTIME)
// Use high-resolution clock
struct timespec tp;
if (clock_gettime(CLOCK_REALTIME, &tp) != 0)
return 0;
return static_cast<SINT64>(tp.tv_sec) * BILLION + tp.tv_nsec;
#⁠else
// This is not safe because of possible wrapping and very imprecise
return clock();
#⁠endif

But HAVE_CLOCK_GETTIME marco is not defined in POSIX (at least in CentOS 6.2, Mandriva 2010.2, OpenSuSE 11.1).
So trace use imprecise timer although high-resolution clock is available in http://librt.so.

I suppose to add in http://configure.in something like this:

AC_CHECK_LIB(rt, clock_gettime, XE_APPEND(-lrt, LIBS); AC_DEFINE(HAVE_CLOCK_GETTIME, 1,
[Define this if clock_gettime works on the platform]))

Commits: 540390e

[firebird-issue-importer]

Modified by: @AlexPeshkoff

assignee: Alexander Peshkov [ alexpeshkoff ]

[firebird-issue-importer]

Modified by: @AlexPeshkoff

status: Open [ 1 ] => Resolved [ 5 ]

resolution: Fixed [ 1 ]

Fix Version: 2.5.3 [ 10461 ]

[firebird-issue-importer]

Modified by: @asfernandes

summary: Trace uses impresice timer in POSIX => Trace uses imprecise timer in POSIX

[firebird-issue-importer]

Modified by: @pcisar

status: Resolved [ 5 ] => Closed [ 6 ]

[firebird-issue-importer]

Modified by: @dyemanov

assignee: Alexander Peshkov [ alexpeshkoff ] => Dmitriy Starodubov [ dmitriy starodubov ]

[firebird-issue-importer]

Modified by: @pavel-zotov

status: Closed [ 6 ] => Closed [ 6 ]

QA Status: No test

[firebird-issue-importer]

Modified by: @pavel-zotov

status: Closed [ 6 ] => Closed [ 6 ]

QA Status: No test => Cannot be tested