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/*
* Copyright 2018 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.
*
* Authors: Gabe Black
*/
#ifndef __SYSTEMC_EXT_CORE_SC_PROCESS_HANDLE_HH__
#define __SYSTEMC_EXT_CORE_SC_PROCESS_HANDLE_HH__
#include <exception>
#include <vector>
namespace sc_gem5
{
class Process;
struct ProcessFuncWrapper
{
virtual void call() = 0;
virtual ~ProcessFuncWrapper() {}
};
template <typename T>
struct ProcessMemberFuncWrapper : public ProcessFuncWrapper
{
typedef void (T::*TFunc)();
T *t;
TFunc func;
ProcessMemberFuncWrapper(T *t, TFunc func) : t(t), func(func) {}
void call() override { (t->*func)(); }
};
struct ExceptionWrapperBase
{
virtual void throw_it() = 0;
};
template <typename T>
struct ExceptionWrapper : public ExceptionWrapperBase
{
const T &t;
ExceptionWrapper(const T &t) : t(t) {}
void throw_it() { throw t; }
};
void throw_it_wrapper(Process *p, ExceptionWrapperBase &exc, bool inc_kids);
} // namespace sc_gem5
namespace sc_core
{
class sc_event;
class sc_object;
enum sc_curr_proc_kind
{
SC_NO_PROC_,
SC_METHOD_PROC_,
SC_THREAD_PROC_,
SC_CTHREAD_PROC_
};
enum sc_descendent_inclusion_info
{
SC_NO_DESCENDANTS,
SC_INCLUDE_DESCENDANTS
};
class sc_unwind_exception : public std::exception
{
public:
virtual const char *what() const throw();
virtual bool is_reset() const;
// Nonstandard.
// These should be protected, but I think this is to enable catch by
// value.
public:
sc_unwind_exception(const sc_unwind_exception &);
virtual ~sc_unwind_exception() throw();
protected:
bool _isReset;
sc_unwind_exception();
};
// Deprecated
// An incomplete version of sc_process_b to satisfy the tests.
class sc_process_b
{
public:
const char *file;
int lineno;
const char *name();
const char *kind();
};
// Deprecated
sc_process_b *sc_get_curr_process_handle();
static inline sc_process_b *
sc_get_current_process_b()
{
return sc_get_curr_process_handle();
}
// Deprecated/nonstandard
struct sc_curr_proc_info
{
sc_process_b *process_handle;
sc_curr_proc_kind kind;
sc_curr_proc_info() : process_handle(NULL), kind(SC_NO_PROC_) {}
};
typedef const sc_curr_proc_info *sc_curr_proc_handle;
class sc_process_handle
{
private:
::sc_gem5::Process *_gem5_process;
public:
sc_process_handle();
sc_process_handle(const sc_process_handle &);
explicit sc_process_handle(sc_object *);
~sc_process_handle();
// These non-standard operators provide access to the data structure which
// actually tracks the process within gem5. By making them operators, we
// can minimize the symbols added to the class namespace.
operator ::sc_gem5::Process * () const { return _gem5_process; }
sc_process_handle &
operator = (::sc_gem5::Process *p)
{
_gem5_process = p;
return *this;
}
bool valid() const;
sc_process_handle &operator = (const sc_process_handle &);
bool operator == (const sc_process_handle &) const;
bool operator != (const sc_process_handle &) const;
bool operator < (const sc_process_handle &) const;
void swap(sc_process_handle &);
const char *name() const;
sc_curr_proc_kind proc_kind() const;
const std::vector<sc_object *> &get_child_objects() const;
const std::vector<sc_event *> &get_child_events() const;
sc_object *get_parent_object() const;
sc_object *get_process_object() const;
bool dynamic() const;
bool terminated() const;
const sc_event &terminated_event() const;
void suspend(sc_descendent_inclusion_info include_descendants=
SC_NO_DESCENDANTS);
void resume(sc_descendent_inclusion_info include_descendants=
SC_NO_DESCENDANTS);
void disable(sc_descendent_inclusion_info include_descendants=
SC_NO_DESCENDANTS);
void enable(sc_descendent_inclusion_info include_descendants=
SC_NO_DESCENDANTS);
void kill(sc_descendent_inclusion_info include_descendants=
SC_NO_DESCENDANTS);
void reset(sc_descendent_inclusion_info include_descendants=
SC_NO_DESCENDANTS);
bool is_unwinding();
const sc_event &reset_event() const;
void sync_reset_on(sc_descendent_inclusion_info include_descendants=
SC_NO_DESCENDANTS);
void sync_reset_off(sc_descendent_inclusion_info include_descendants=
SC_NO_DESCENDANTS);
template <typename T>
void
throw_it(const T &user_defined_exception,
sc_descendent_inclusion_info include_descendants=
SC_NO_DESCENDANTS)
{
::sc_gem5::ExceptionWrapper<T> exc(user_defined_exception);
::sc_gem5::throw_it_wrapper(_gem5_process, exc,
include_descendants == SC_INCLUDE_DESCENDANTS);
}
};
sc_process_handle sc_get_current_process_handle();
bool sc_is_unwinding();
// Nonstandard
// See Accellera's kernel/sim_context.cpp for an explanation of what this is
// supposed to do. It essentially selects what happens during certain
// undefined situations.
extern bool sc_allow_process_control_corners;
} // namespace sc_core
#endif //__SYSTEMC_EXT_CORE_SC_PROCESS_HANDLE_HH__
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