- Added the LOAD command to TextSimulation, and the classic question made to user on replacing an unsaved simulation
- Changed the way syntactically incorrect python policies are handled, we no more exit abruptly git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@829 3ecf2c5c-341e-0410-92b4-d18e462d057c
This commit is contained in:
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d72ce96508
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0138387a7f
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@ -167,6 +167,7 @@ src_backend_libbackend_la_SOURCES = \
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src/backend/holt_graph.cc \
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src/backend/invalid_plugin_exception.cc \
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src/backend/key_file.cc \
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src/backend/malformed_policy_exception.cc \
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src/backend/module.cc \
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src/backend/null_policy_exception.cc \
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src/backend/plugin_manager.cc \
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@ -210,6 +211,7 @@ pkginclude_HEADERS += \
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src/backend/holt_graph.hh \
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src/backend/invalid_plugin_exception.hh \
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src/backend/key_file.hh \
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src/backend/malformed_policy_exception.hh \
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src/backend/module.hh \
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src/backend/null_policy_exception.hh \
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src/backend/policy_parameters.hh \
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@ -32,7 +32,7 @@ using namespace std;
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// WARNING : this class needs extensive and above all
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// *strong* exception checking / handling!
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PythonCPUPolicy::PythonCPUPolicy(const char* name)
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PythonCPUPolicy::PythonCPUPolicy(const char* name) throw(MalformedPolicyException)
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: _upolicy_dict(NULL), _adapter(NULL), _name(name)
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{
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PyObject* pLoadmeStr = PyString_FromString(name);
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@ -42,8 +42,7 @@ PythonCPUPolicy::PythonCPUPolicy(const char* name)
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if( !pUserCPUPolicyModule )
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{
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PyErr_Print(); // Error in import
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// FIXME : don't exit abruptly, but fall back gracefully
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exit(-1);
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throw MalformedPolicyException("this message should be the stuff printed by PyErr_Print");
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}
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// Dictionary with defined ``symbols'' for .pyc file
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@ -30,12 +30,12 @@
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#include "cpu_policy.hh"
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#include "user_interrupt_exception.hh"
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#include "malformed_policy_exception.hh"
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namespace sgpem
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{
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class PythonCPUPolicy;
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class PythonCPUPolicyManager;
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class UserInterruptException;
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/** \brief A specialization of abstract class Policy
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@ -45,7 +45,7 @@ namespace sgpem
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class SG_DLLEXPORT PythonCPUPolicy : public CPUPolicy
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{
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public:
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PythonCPUPolicy(const char* name);
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PythonCPUPolicy(const char* name) throw(MalformedPolicyException);
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virtual ~PythonCPUPolicy();
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/**
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@ -122,23 +122,30 @@ PythonCPUPolicyManager::collect_policies()
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for(Glib::DirIterator file_it = dir.begin(); file_it != dir.end(); ++file_it)
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{
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cout << "\tChecking if " << *file_it << " is a Python script... ";
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cout << "\tChecking if " << *file_it << " is a valid Python script... ";
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Glib::PatternSpec dot_py("*.py");
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if(dot_py.match(*file_it))
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{
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cout << "yes\n";
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cout << "yes" << endl;
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//strip extension
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std::string policy_name = (*file_it).substr(0, (*file_it).size() - 3);
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PythonCPUPolicy *pypolicy = new PythonCPUPolicy(policy_name.c_str());
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try
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{
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PythonCPUPolicy *pypolicy = new PythonCPUPolicy(policy_name.c_str());
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_policies.push_back(pypolicy);
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_policies.push_back(pypolicy);
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}
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catch(MalformedPolicyException e)
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{
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// TODO do something here someday
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}
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}
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else
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cout << "no\n";
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cout << "no" << endl;
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}
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}
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}
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@ -0,0 +1,32 @@
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// src/backend/malformed_policy_exception.cc - Copyright 2005, 2006, University
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// of Padova, dept. of Pure and Applied
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// Mathematics
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//
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// This file is part of SGPEMv2.
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//
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// This is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// SGPEMv2 is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with SGPEMv2; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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// Warning! This exception will be thrown across different libraries.
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// It could be necessary to do dynamic type-checking when
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// catching it (with typeinfo).
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#include "malformed_policy_exception.hh"
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using namespace sgpem;
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MalformedPolicyException::MalformedPolicyException(const char* msg)
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: std::runtime_error(msg)
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{}
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MalformedPolicyException::~MalformedPolicyException() throw() {}
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@ -0,0 +1,46 @@
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// src/backend/malformed_policy_exception.hh - Copyright 2005, 2006, University
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// of Padova, dept. of Pure and Applied
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// Mathematics
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//
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// This file is part of SGPEMv2.
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//
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// This is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// SGPEMv2 is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with SGPEMv2; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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// Warning! This exception will be thrown across different libraries.
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// It could be necessary to do dynamic type-checking when
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// catching it (with typeinfo).
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#ifndef MALFORMED_POLICY_EXCEPTION
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#define MALFORMED_POLICY_EXCEPTION 1
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#include "config.h"
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#include <stdexcept>
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namespace sgpem
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{
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class MalformedPolicyException;
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class SG_DLLEXPORT MalformedPolicyException : public std::runtime_error
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{
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public:
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MalformedPolicyException(const char* msg = "");
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virtual ~MalformedPolicyException() throw ();
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private:
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};
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} //~ namespace sgpem
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#endif
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@ -91,7 +91,8 @@ namespace sgpem
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}
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TextSimulation::TextSimulation()
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TextSimulation::TextSimulation() :
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_saved(true)
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{
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}
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@ -116,6 +117,35 @@ TextSimulation::check_arguments_num(const Tokens& arguments, unsigned int num)
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return true;
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}
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bool
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TextSimulation::unsaved_ask_confirm() const
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{
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if(!_saved)
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{
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p_stderr(_("WARNING: Simulation was not recently saved. "
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"If you continue some changes to the simulation might be lost.\n"));
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for(bool bad_arg = true; bad_arg;)
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{
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p_stdout(_("Continue? [y/n] "));
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ustring buf = readline();
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Tokens tokens = tokenize(buf);
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if(tokens.size() == 1 && tokens[0].size() == 1)
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{
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if(tokens[0].lowercase() == _("n"))
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return false;
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else if(tokens[0].lowercase() == _("y"))
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bad_arg = false;
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}
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}
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}
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return true;
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}
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template <typename Container>
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void
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TextSimulation::show(const Container& entities)
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@ -459,7 +489,7 @@ TextSimulation::on_help(const Tokens& arguments)
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if(command.size() == 0)
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p_stdout(_("Avaiable commands:\nRUN\nSTOP\nPAUSE\n"
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"CONFIGURE-CPU-POLICY\nHELP\nGET\nSET\nSHOW\nADD\n"
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"REMOVE\nQUIT\n\n"
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"REMOVE\nSAVE\nLOAD\nQUIT\n\n"
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"HELP followed by a command name shows help about it.\n"
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"ex. `HELP RUN` shows help about the command RUN\n"));
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else if(command == "RUN")
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@ -520,6 +550,12 @@ TextSimulation::on_help(const Tokens& arguments)
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"numeric ids follow the same logic of the previous commands\n"
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"`REMOVE subrequest <process_id> <thread_id> <request_id> <subrequest_id>` where the "
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"numeric ids follow the same logic of the previous commands\n"));
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else if(command == "SAVE")
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p_stderr(_("-- SAVE COMMAND --\nSaves the simulation.\n\n"
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"Syntax: SAVE <filename>\n"));
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else if(command == "LOAD")
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p_stderr(_("-- LOAD COMMAND --\nLoads the simulation.\n\n"
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"Syntax: LOAD <filename>\n"));
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else if(command == "QUIT")
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p_stderr(_("-- QUIT COMMAND --\nGently closes the program.\n"));
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else
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@ -531,6 +567,9 @@ TextSimulation::on_quit(const Tokens& arguments)
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{
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check_arguments_num(arguments, 0);
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if(!unsaved_ask_confirm())
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return;
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p_stdout(_("\n\n*** Thank you for using SGPEM by Sirius Cybernetics Corporation ***\n\n"));
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// Is this ok? Really? Oh, sure, if it we always did it in this way, it is surely a Good Thing!
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@ -1303,11 +1342,53 @@ TextSimulation::on_save(const Tokens& arguments)
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vector<Serializer*> serializers =
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SerializersGatekeeper::get_instance().get_registered();
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// FIXME using the first serializer available, this
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// will need to be changed when multiple serializers will
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// be made available
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Serializer& serializer = *serializers.at(0);
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const History& history = Simulation::get_instance().get_history();
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serializer.save_snapshot(filename, history);
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_saved = true;
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}
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catch(out_of_range e)
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{
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p_stderr(_("ERROR: No registered serializer available\n"));
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}
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catch(SerializerError e)
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{
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string msg = _("ERROR: ");
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p_stderr(msg + e.what() + "\n");
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}
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}
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void
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TextSimulation::on_load(const Tokens& arguments)
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{
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if(!check_arguments_num(arguments, 1))
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return;
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ustring filename = arguments[0];
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if(!unsaved_ask_confirm())
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return;
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try
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{
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vector<Serializer*> serializers =
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SerializersGatekeeper::get_instance().get_registered();
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// FIXME using the first serializer available, this
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// will need to be changed when multiple serializers will
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// be made available
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Serializer& serializer = *serializers.at(0);
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History& history = Simulation::get_instance().get_history();
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serializer.restore_snapshot(filename, history);
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}
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catch(out_of_range e)
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{
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@ -1361,8 +1442,9 @@ TextSimulation::parse_command(TextSimulation& sim, const ustring& str)
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command_handlers["ADD"] = &TextSimulation::on_add;
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command_handlers["REMOVE"] = &TextSimulation::on_remove;
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command_handlers["SAVE"] = &TextSimulation::on_save;
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command_handlers["LOAD"] = &TextSimulation::on_load;
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command_handlers["QUIT"] = &TextSimulation::on_quit;
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Tokens arguments = tokenize(str);
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if(arguments.size() == 0)
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@ -1379,6 +1461,9 @@ TextSimulation::parse_command(TextSimulation& sim, const ustring& str)
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arguments.erase(arguments.begin());
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(sim.*(command_handlers[key]))(arguments);
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if(key == "ADD" || key == "REMOVE")
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sim._saved = false;
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}
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static ostream&
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@ -74,6 +74,7 @@ namespace sgpem
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virtual void update(const History& changed_history);
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bool check_arguments_num(const Tokens& arguments, unsigned int num);
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bool unsaved_ask_confirm() const;
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template <typename Container>
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void show(const Container& entities);
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template <typename T>
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@ -107,12 +108,15 @@ namespace sgpem
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void on_remove_request(const Tokens& arguments);
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void on_remove_subrequest(const Tokens& arguments);
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void on_save(const Tokens& arguments);
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void on_load(const Tokens& arguments);
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// FIXME This is a temporary replacement for the
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// to-be written I/O layer
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static void p_stdout(const Glib::ustring& str);
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static void p_stderr(const Glib::ustring& str);
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static Glib::ustring readline();
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bool _saved;
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};
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}
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