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author | Gabe Black <gabeblack@google.com> | 2018-09-01 17:15:24 -0700 |
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committer | Gabe Black <gabeblack@google.com> | 2018-10-03 00:45:39 +0000 |
commit | 4f3913eff992ec9622c81c93e551a1a197b68f60 (patch) | |
tree | c54993ecbaaab6e8fd23f8dc80036b52faabfbb9 /src/systemc/core/sc_time.cc | |
parent | 25c0c8320d6010785ea622866a71d2779ad339e6 (diff) | |
download | gem5-4f3913eff992ec9622c81c93e551a1a197b68f60.tar.xz |
systemc: Implement sc_(g|s)et_time_resolution.
Change-Id: If546bea633e777cdb2b14f47c0d9d50b044b99cf
Reviewed-on: https://gem5-review.googlesource.com/c/12461
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
Diffstat (limited to 'src/systemc/core/sc_time.cc')
-rw-r--r-- | src/systemc/core/sc_time.cc | 54 |
1 files changed, 50 insertions, 4 deletions
diff --git a/src/systemc/core/sc_time.cc b/src/systemc/core/sc_time.cc index 96877e89e..e0e8cf107 100644 --- a/src/systemc/core/sc_time.cc +++ b/src/systemc/core/sc_time.cc @@ -33,7 +33,9 @@ #include "base/types.hh" #include "python/pybind11/pybind.hh" #include "systemc/core/python.hh" +#include "systemc/ext/core/sc_main.hh" #include "systemc/ext/core/sc_time.hh" +#include "systemc/ext/utils/sc_report_handler.hh" namespace sc_core { @@ -98,6 +100,15 @@ fixTime() } void +setGlobalFrequency(Tick ticks_per_second) +{ + auto ticks = pybind11::module::import("m5.ticks"); + auto set_global_frequency = ticks.attr("setGlobalFrequency"); + set_global_frequency(ticks_per_second); + fixTime(); +} + +void set(::sc_core::sc_time *time, double d, ::sc_core::sc_time_unit tu) { // Only fix time once. @@ -358,16 +369,51 @@ operator << (std::ostream &os, const sc_time &t) const sc_time SC_ZERO_TIME; void -sc_set_time_resolution(double, sc_time_unit) +sc_set_time_resolution(double d, sc_time_unit tu) { - warn("%s not implemented.\n", __PRETTY_FUNCTION__); + if (d < 0.0) { + SC_REPORT_ERROR("(E514) set time resolution failed", + "value not positive"); + } + double dummy; + if (modf(log10(d), &dummy) != 0.0) { + SC_REPORT_ERROR("(E514) set time resolution failed", + "value not a power of ten"); + } + if (sc_is_running()) { + SC_REPORT_ERROR("(E514) set time resolution failed", + "simulation running"); + } + static bool specified = false; + if (specified) { + SC_REPORT_ERROR("(E514) set time resolution failed", + "already specified"); + } + // This won't detect the timescale being fixed outside of systemc, but + // it's at least some protection. + if (timeFixed) { + SC_REPORT_ERROR("(E514) set time resolution failed", + "sc_time object(s) constructed"); + } + + // Normalize d to seconds. + d *= TimeUnitScale[tu]; + if (d < TimeUnitScale[SC_FS]) { + SC_REPORT_ERROR("(E514) set time resolution failed", + "value smaller than 1 fs"); + } + // Change d from a period to a frequency. + d = 1 / d; + // Convert to integer ticks. + Tick ticks_per_second = static_cast<Tick>(d); + setGlobalFrequency(ticks_per_second); + specified = true; } sc_time sc_get_time_resolution() { - warn("%s not implemented.\n", __PRETTY_FUNCTION__); - return sc_time(); + return sc_time::from_value(1); } const sc_time & |