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path: root/erts/emulator/hipe/hipe_bif1.c
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2011-04-05Merge branch 'ks/hipe-ppc64' into devHenrik Nord
* ks/hipe-ppc64: Enable HiPE by default when compiling for PPC64 Translate RTL to PPC code on PPC64 too Changes in ppc files for PPC64 Additions for the PPC64 backend Changes for the PPC64 backend Added loader for ppc64 New files for the 64-bit backends Cleanup tags OTP-9198
2011-03-11Update copyright yearsBjörn-Egil Dahlberg
2011-02-14Cleanup tagsKostis Sagonas
2010-08-27robustify hipe_bifs:get_hrvtime/0Mikael Pettersson
The HiPE runtime system has a hipe_bifs:get_hrvtime/0 BIF which mimics the non-standard gethrvtime() C API. It's possible to configure the implementation to use the "perfctr" Linux kernel extension for performance-monitoring counters, in which case get_hrvtime has very high precision and low overhead. Otherwise it uses the same code as runtime(statistics). This patch changes the get_hrvtime implementation to do a runtime check to see if perfctr is available, and to use the fallback code rather than returning a dummy value if perfctr is unavailable, which is common. The current dummy value return is a bug. It messes up the API and either breaks callers (they get badarg when trying to compute on the value) or forces them to implement checks and fallbacks themselves. Timing code in HiPE's test suites and benchmarks is known to be affected.
2009-11-20The R13B03 release.OTP_R13B03Erlang/OTP