1 ##########################################################################
3 # Copyright 2010 VMware, Inc.
6 # Permission is hereby granted, free of charge, to any person obtaining a copy
7 # of this software and associated documentation files (the "Software"), to deal
8 # in the Software without restriction, including without limitation the rights
9 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 # copies of the Software, and to permit persons to whom the Software is
11 # furnished to do so, subject to the following conditions:
13 # The above copyright notice and this permission notice shall be included in
14 # all copies or substantial portions of the Software.
16 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 ##########################################################################/
27 """Generic retracing code generator."""
34 class ConstRemover(stdapi.Rebuilder):
36 def visit_const(self, const):
39 def visit_opaque(self, opaque):
41 if expr.startswith('const '):
43 return stdapi.Opaque(expr)
46 class ValueExtractor(stdapi.Visitor):
48 def visit_literal(self, literal, lvalue, rvalue):
49 if literal.format == 'Bool':
50 print ' %s = static_cast<bool>(%s);' % (lvalue, rvalue)
52 print ' %s = %s;' % (lvalue, rvalue)
54 def visit_const(self, const, lvalue, rvalue):
55 self.visit(const.type, lvalue, rvalue)
57 def visit_alias(self, alias, lvalue, rvalue):
58 self.visit(alias.type, lvalue, rvalue)
60 def visit_enum(self, enum, lvalue, rvalue):
61 print ' %s = %s;' % (lvalue, rvalue)
63 def visit_bitmask(self, bitmask, lvalue, rvalue):
64 self.visit(bitmask.type, lvalue, rvalue)
66 def visit_array(self, array, lvalue, rvalue):
67 print ' const Trace::Array *__a%s = dynamic_cast<const Trace::Array *>(&%s);' % (array.id, rvalue)
68 print ' if (__a%s) {' % (array.id)
69 length = '__a%s->values.size()' % array.id
70 print ' %s = new %s[%s];' % (lvalue, array.type, length)
71 index = '__j' + array.id
72 print ' for(size_t {i} = 0; {i} < {length}; ++{i}) {{'.format(i = index, length = length)
74 self.visit(array.type, '%s[%s]' % (lvalue, index), '*__a%s->values[%s]' % (array.id, index))
78 print ' %s = NULL;' % lvalue
81 def visit_pointer(self, pointer, lvalue, rvalue):
82 print ' const Trace::Array *__a%s = dynamic_cast<const Trace::Array *>(&%s);' % (pointer.id, rvalue)
83 print ' if (__a%s) {' % (pointer.id)
84 print ' %s = new %s;' % (lvalue, pointer.type)
86 self.visit(pointer.type, '%s[0]' % (lvalue,), '*__a%s->values[0]' % (pointer.id,))
89 print ' %s = NULL;' % lvalue
92 def visit_handle(self, handle, lvalue, rvalue):
93 self.visit(handle.type, lvalue, "__%s_map[%s]" %(handle.name, rvalue));
94 print ' if (verbosity >= 2)'
95 print ' std::cout << "%s " << static_cast<%s>(%s) << " <- " << %s << "\\n";' % (handle.name, handle.type, rvalue, lvalue)
97 def visit_blob(self, blob, lvalue, rvalue):
98 print ' %s = static_cast<%s>((%s).blob());' % (lvalue, blob, rvalue)
100 def visit_string(self, string, lvalue, rvalue):
101 print ' %s = (%s)((%s).string());' % (lvalue, string.expr, rvalue)
105 class ValueWrapper(stdapi.Visitor):
107 def visit_literal(self, literal, lvalue, rvalue):
110 def visit_alias(self, alias, lvalue, rvalue):
111 self.visit(alias.type, lvalue, rvalue)
113 def visit_enum(self, enum, lvalue, rvalue):
116 def visit_bitmask(self, bitmask, lvalue, rvalue):
119 def visit_array(self, array, lvalue, rvalue):
120 print ' const Trace::Array *__a%s = dynamic_cast<const Trace::Array *>(&%s);' % (array.id, rvalue)
121 print ' if (__a%s) {' % (array.id)
122 length = '__a%s->values.size()' % array.id
123 index = '__j' + array.id
124 print ' for(size_t {i} = 0; {i} < {length}; ++{i}) {{'.format(i = index, length = length)
126 self.visit(array.type, '%s[%s]' % (lvalue, index), '*__a%s->values[%s]' % (array.id, index))
131 def visit_pointer(self, pointer, lvalue, rvalue):
132 print ' const Trace::Array *__a%s = dynamic_cast<const Trace::Array *>(&%s);' % (pointer.id, rvalue)
133 print ' if (__a%s) {' % (pointer.id)
135 self.visit(pointer.type, '%s[0]' % (lvalue,), '*__a%s->values[0]' % (pointer.id,))
140 def visit_handle(self, handle, lvalue, rvalue):
141 if handle.range is None:
142 print " __{handle.name}_map[static_cast<{handle.type}>({rvalue})] = {lvalue};".format(**locals())
143 print ' if (verbosity >= 2)'
144 print ' std::cout << "{handle.name} " << static_cast<{handle.type}>({rvalue}) << " -> " << {lvalue} << "\\n";'.format(**locals())
146 i = '__h' + handle.id
147 print ' for({handle.type} {i} = 0; {i} < {handle.range}; ++{i}) {{'.format(**locals())
148 print ' __{handle.name}_map[static_cast<{handle.type}>({rvalue}) + {i}] = {lvalue} + {i};'.format(**locals())
149 print ' if (verbosity >= 2)'
150 print ' std::cout << "{handle.name} " << (static_cast<{handle.type}>({rvalue}) + {i}) << " -> " << ({lvalue} + {i}) << "\\n";'.format(**locals())
153 def visit_blob(self, blob, lvalue, rvalue):
156 def visit_string(self, string, lvalue, rvalue):
163 def retrace_function(self, function):
164 print 'static void retrace_%s(Trace::Call &call) {' % function.name
166 for arg in function.args:
167 arg_type = ConstRemover().visit(arg.type)
168 #print ' // %s -> %s' % (arg.type, arg_type)
169 print ' %s %s;' % (arg_type, arg.name)
170 rvalue = 'call.arg(%u)' % (arg.index,)
173 self.extract_arg(function, arg, arg_type, lvalue, rvalue)
174 except NotImplementedError:
176 print ' %s = 0; // FIXME' % arg.name
178 self.fail_function(function)
179 self.call_function(function)
180 for arg in function.args:
182 arg_type = ConstRemover().visit(arg.type)
183 rvalue = 'call.arg(%u)' % (arg.index,)
186 ValueWrapper().visit(arg_type, lvalue, rvalue)
187 except NotImplementedError:
188 print ' // FIXME: %s' % arg.name
189 if function.type is not stdapi.Void:
193 ValueWrapper().visit(function.type, lvalue, rvalue)
194 except NotImplementedError:
195 print ' // FIXME: result'
199 def fail_function(self, function):
200 print ' std::cerr << "warning: unsupported call %s\\n";' % function.name
203 def extract_arg(self, function, arg, arg_type, lvalue, rvalue):
204 ValueExtractor().visit(arg_type, lvalue, rvalue)
206 def call_function(self, function):
207 arg_names = ", ".join([arg.name for arg in function.args])
208 if function.type is not stdapi.Void:
209 print ' %s __result;' % (function.type)
210 print ' __result = %s(%s);' % (function.name, arg_names)
212 print ' %s(%s);' % (function.name, arg_names)
214 def filter_function(self, function):
217 def retrace_functions(self, functions):
218 functions = filter(self.filter_function, functions)
220 for function in functions:
221 if function.sideeffects:
222 self.retrace_function(function)
224 print 'static bool retrace_call(Trace::Call &call) {'
225 print ' const char *name = call.name().c_str();'
227 print ' if (verbosity >=1 ) {'
228 print ' std::cout << call;'
229 print ' std::cout.flush();'
233 func_dict = dict([(function.name, function) for function in functions])
235 def handle_case(function_name):
236 function = func_dict[function_name]
237 if function.sideeffects:
238 print ' retrace_%s(call);' % function.name
239 print ' return true;'
241 string_switch('name', func_dict.keys(), handle_case)
243 print ' std::cerr << "warning: unknown call " << call.name() << "\\n";'
244 print ' return false;'
249 def retrace_api(self, api):
251 print '#include "trace_parser.hpp"'
254 types = api.all_types()
255 handles = [type for type in types if isinstance(type, stdapi.Handle)]
257 for handle in handles:
258 if handle.name not in handle_names:
259 print 'static std::map<%s, %s> __%s_map;' % (handle.type, handle.type, handle.name)
260 handle_names.add(handle.name)
263 print 'unsigned verbosity = 0;'
266 self.retrace_functions(api.functions)