f278b1ea36
Because the python environment may already be up and running by the time static initializers are run, specifically when gem5 is built as a library and loaded with dlopen, we can't rely on all of the objects declaring python initialization callbacks having been constructed by the time the code which would execute them runs. To address that problem, this change keeps track of whether the initialization has already happened when a callback is installed, and if so, runs the callback immediately. The original implementation also had users install callbacks by overriding a virtual function in the PythonInitFunc class, and then statically allocating an instance of that subclass so its constructor would be called at initialization time. Calling the function manually if initialization has already happened won't work in that case, because you can't call a virtual function from a constructor and get the behavior you'd want. Instead, this change makes the PythonInitFunc wrap the actual callback which is outside of the structure itself. Because the callback is not a virtual function of PythonInitFunc, we can call it in the constructor without issue. Also, the Callback type has to be a bare function pointer and not a std::function<...> because the argument it takes is a pybind11::module_ reference. Pybind11 sets the visibility of all of its code to hidden to improve binary size, but unfortunately that causes problems when accepting one as an argument in a publically accessible lambda in g++. clang doesn't raise a warning, but g++ does which breaks the build. We could potentially disable this warning, but accepting a function pointer instead works just as well, since captureless lambdas can be trivially converted into function pointers, and they don't seem to upset g++. Change-Id: I3fb321b577090df67c7be3be0e677c2c2055d446 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/54325 Maintainer: Gabe Black <gabe.black@gmail.com> Reviewed-by: Jason Lowe-Power <power.jg@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com>
76 lines
3.1 KiB
C++
76 lines
3.1 KiB
C++
/*
|
|
* Copyright 2019 Google, Inc.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are
|
|
* met: redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer;
|
|
* redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution;
|
|
* neither the name of the copyright holders nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include "pybind11/operators.h"
|
|
|
|
#include "systemc/core/python.hh"
|
|
#include "systemc/ext/core/sc_time.hh"
|
|
|
|
namespace
|
|
{
|
|
|
|
::sc_gem5::PythonInitFunc installScTime([](pybind11::module_ &systemc) {
|
|
pybind11::class_<sc_core::sc_time> sc_time(systemc, "sc_time");
|
|
sc_time
|
|
// Constructors (omitting nonstandard and deprecated)
|
|
.def(pybind11::init<>())
|
|
.def(pybind11::init<double, sc_core::sc_time_unit>())
|
|
.def(pybind11::init<const sc_core::sc_time &>())
|
|
|
|
// Converters.
|
|
.def("value", &sc_core::sc_time::value)
|
|
.def("to_double", &sc_core::sc_time::to_double)
|
|
.def("to_seconds", &sc_core::sc_time::to_seconds)
|
|
.def("to_string", &sc_core::sc_time::to_string)
|
|
.def("__str__", &sc_core::sc_time::to_string)
|
|
|
|
// Operators.
|
|
.def(pybind11::self == pybind11::self)
|
|
.def(pybind11::self != pybind11::self)
|
|
.def(pybind11::self < pybind11::self)
|
|
.def(pybind11::self <= pybind11::self)
|
|
.def(pybind11::self > pybind11::self)
|
|
.def(pybind11::self >= pybind11::self)
|
|
.def(pybind11::self += pybind11::self)
|
|
.def(pybind11::self -= pybind11::self)
|
|
.def(pybind11::self *= double())
|
|
.def(pybind11::self /= double())
|
|
;
|
|
|
|
pybind11::enum_<sc_core::sc_time_unit>(sc_time, "sc_time_unit")
|
|
.value("SC_FS", sc_core::SC_FS)
|
|
.value("SC_PS", sc_core::SC_PS)
|
|
.value("SC_NS", sc_core::SC_NS)
|
|
.value("SC_US", sc_core::SC_US)
|
|
.value("SC_MS", sc_core::SC_MS)
|
|
.value("SC_SEC", sc_core::SC_SEC)
|
|
.export_values()
|
|
;
|
|
});
|
|
|
|
} // anonymous namespace
|