1 ##########################################################################
3 # Copyright 2008-2010 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
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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 ##########################################################################/
26 """Common trace code generation."""
35 def interface_wrap_name(interface):
36 return "Wrap" + interface.expr
38 class DumpDeclarator(stdapi.OnceVisitor):
39 '''Declare helper functions to dump complex types.'''
41 def visit_void(self, literal):
44 def visit_literal(self, literal):
47 def visit_string(self, string):
50 def visit_const(self, const):
51 self.visit(const.type)
53 def visit_struct(self, struct):
54 for type, name in struct.members:
56 print 'static void __traceStruct%s(const %s &value) {' % (struct.id, struct.expr)
57 print ' static const char * members[%u] = {' % (len(struct.members),)
58 for type, name, in struct.members:
59 print ' "%s",' % (name,)
61 print ' static const Trace::StructSig sig = {'
62 print ' %u, "%s", %u, members' % (int(struct.id), struct.name, len(struct.members))
64 print ' Trace::BeginStruct(&sig);'
65 for type, name in struct.members:
66 dump_instance(type, 'value.%s' % (name,))
67 print ' Trace::EndStruct();'
71 def visit_array(self, array):
72 self.visit(array.type)
74 def visit_blob(self, array):
77 def visit_enum(self, enum):
78 print 'static void __traceEnum%s(const %s value) {' % (enum.id, enum.expr)
81 value = enum.values[i]
82 print ' static const Trace::EnumSig sig%u = {%u, "%s", %s};' % (i, enum.vid + i, value, value)
83 print ' const Trace::EnumSig *sig;'
84 print ' switch(value) {'
86 value = enum.values[i]
87 print ' case %s:' % value
88 print ' sig = &sig%u;' % i
91 print ' Trace::LiteralSInt(value);'
94 print ' Trace::LiteralEnum(sig);'
98 def visit_bitmask(self, bitmask):
99 print 'static const Trace::BitmaskVal __bitmask%s_vals[] = {' % (bitmask.id)
100 for value in bitmask.values:
101 print ' {"%s", %s},' % (value, value)
104 print 'static const Trace::BitmaskSig __bitmask%s_sig = {' % (bitmask.id)
105 print ' %u, %u, __bitmask%s_vals' % (int(bitmask.id), len(bitmask.values), bitmask.id)
109 def visit_pointer(self, pointer):
110 self.visit(pointer.type)
112 def visit_handle(self, handle):
113 self.visit(handle.type)
115 def visit_alias(self, alias):
116 self.visit(alias.type)
118 def visit_opaque(self, opaque):
121 def visit_interface(self, interface):
122 print "class %s : public %s " % (interface_wrap_name(interface), interface.name)
125 print " %s(%s * pInstance);" % (interface_wrap_name(interface), interface.name)
126 print " virtual ~%s();" % interface_wrap_name(interface)
128 for method in interface.itermethods():
129 print " " + method.prototype() + ";"
132 print " %s * m_pInstance;" % (interface.name,)
137 class DumpImplementer(stdapi.Visitor):
138 '''Dump an instance.'''
140 def visit_literal(self, literal, instance):
141 print ' Trace::Literal%s(%s);' % (literal.format, instance)
143 def visit_string(self, string, instance):
144 if string.length is not None:
145 print ' Trace::LiteralString((const char *)%s, %s);' % (instance, string.length)
147 print ' Trace::LiteralString((const char *)%s);' % instance
149 def visit_const(self, const, instance):
150 self.visit(const.type, instance)
152 def visit_struct(self, struct, instance):
153 print ' __traceStruct%s(%s);' % (struct.id, instance)
155 def visit_array(self, array, instance):
156 print ' if(%s) {' % instance
157 index = '__i' + array.type.id
158 print ' Trace::BeginArray(%s);' % (array.length,)
159 print ' for (int %s = 0; %s < %s; ++%s) {' % (index, index, array.length, index)
160 print ' Trace::BeginElement();'
161 self.visit(array.type, '(%s)[%s]' % (instance, index))
162 print ' Trace::EndElement();'
164 print ' Trace::EndArray();'
167 print ' Trace::LiteralNull();'
169 def visit_blob(self, blob, instance):
170 print ' Trace::LiteralBlob(%s, %s);' % (instance, blob.size)
172 def visit_enum(self, enum, instance):
173 print ' __traceEnum%s(%s);' % (enum.id, instance)
175 def visit_bitmask(self, bitmask, instance):
176 print ' Trace::LiteralBitmask(__bitmask%s_sig, %s);' % (bitmask.id, instance)
178 def visit_pointer(self, pointer, instance):
179 print ' if(%s) {' % instance
180 print ' Trace::BeginArray(1);'
181 print ' Trace::BeginElement();'
182 dump_instance(pointer.type, "*" + instance)
183 print ' Trace::EndElement();'
184 print ' Trace::EndArray();'
187 print ' Trace::LiteralNull();'
189 def visit_handle(self, handle, instance):
190 self.visit(handle.type, instance)
192 def visit_alias(self, alias, instance):
193 self.visit(alias.type, instance)
195 def visit_opaque(self, opaque, instance):
196 print ' Trace::LiteralOpaque((const void *)%s);' % instance
198 def visit_interface(self, interface, instance):
199 print ' Trace::LiteralOpaque((const void *)&%s);' % instance
202 dump_instance = DumpImplementer().visit
206 class Wrapper(stdapi.Visitor):
207 '''Wrap an instance.'''
209 def visit_void(self, type, instance):
210 raise NotImplementedError
212 def visit_literal(self, type, instance):
215 def visit_string(self, type, instance):
218 def visit_const(self, type, instance):
221 def visit_struct(self, struct, instance):
222 for type, name in struct.members:
223 self.visit(type, "(%s).%s" % (instance, name))
225 def visit_array(self, array, instance):
226 # XXX: actually it is possible to return an array of pointers
229 def visit_blob(self, blob, instance):
232 def visit_enum(self, enum, instance):
235 def visit_bitmask(self, bitmask, instance):
238 def visit_pointer(self, pointer, instance):
239 self.visit(pointer.type, "*" + instance)
241 def visit_handle(self, handle, instance):
242 self.visit(handle.type, instance)
244 def visit_alias(self, alias, instance):
245 self.visit(alias.type, instance)
247 def visit_opaque(self, opaque, instance):
250 def visit_interface(self, interface, instance):
251 assert instance.startswith('*')
252 instance = instance[1:]
253 print " if(%s)" % instance
254 print " %s = new %s(%s);" % (instance, interface_wrap_name(interface), instance)
257 class Unwrapper(Wrapper):
259 def visit_interface(self, interface, instance):
260 assert instance.startswith('*')
261 instance = instance[1:]
262 print " if(%s)" % instance
263 print " %s = static_cast<%s *>(%s)->m_pInstance;" % (instance, interface_wrap_name(interface), instance)
266 wrap_instance = Wrapper().visit
267 unwrap_instance = Unwrapper().visit
272 def trace_api(self, api):
276 for header in api.headers:
281 types = api.all_types()
282 visitor = DumpDeclarator()
283 map(visitor.visit, types)
287 interfaces = [type for type in types if isinstance(type, stdapi.Interface)]
288 map(self.interface_wrap_impl, interfaces)
292 map(self.trace_function_decl, api.functions)
293 map(self.trace_function_impl, api.functions)
298 def header(self, api):
301 def footer(self, api):
304 def function_pointer_type(self, function):
305 return 'P' + function.name
307 def function_pointer_value(self, function):
308 return 'p' + function.name
310 def trace_function_decl(self, function):
311 ptype = self.function_pointer_type(function)
312 pvalue = self.function_pointer_value(function)
313 print 'typedef ' + function.prototype('* %s' % ptype) + ';'
314 print 'static %s %s = NULL;' % (ptype, pvalue)
317 def trace_function_fail(self, function):
318 if function.fail is not None:
319 if function.type is stdapi.Void:
320 assert function.fail == ''
323 assert function.fail != ''
324 print ' return %s;' % function.fail
326 print ' Trace::Abort();'
328 def get_function_address(self, function):
329 raise NotImplementedError
331 def _get_true_pointer(self, function):
332 ptype = self.function_pointer_type(function)
333 pvalue = self.function_pointer_value(function)
334 print ' if(!%s) {' % (pvalue,)
335 print ' %s = (%s)%s;' % (pvalue, ptype, self.get_function_address(function))
336 print ' if(!%s)' % (pvalue,)
337 self.trace_function_fail(function)
340 def trace_function_impl(self, function):
341 pvalue = self.function_pointer_value(function)
342 print 'extern "C" ' + function.prototype() + ' {'
344 print ' static const char * __args[%u] = {%s};' % (len(function.args), ', '.join(['"%s"' % arg.name for arg in function.args]))
346 print ' static const char ** __args = NULL;'
347 print ' static const Trace::FunctionSig __sig = {%u, "%s", %u, __args};' % (int(function.id), function.name, len(function.args))
348 if function.type is stdapi.Void:
351 print ' %s __result;' % function.type
352 result = '__result = '
353 self._get_true_pointer(function)
354 print ' unsigned __call = Trace::BeginEnter(__sig);'
355 for arg in function.args:
357 self.unwrap_arg(function, arg)
358 self.dump_arg(function, arg)
359 print ' Trace::EndEnter();'
360 print ' %s%s(%s);' % (result, pvalue, ', '.join([str(arg.name) for arg in function.args]))
361 print ' Trace::BeginLeave(__call);'
362 for arg in function.args:
364 self.dump_arg(function, arg)
365 self.wrap_arg(function, arg)
366 if function.type is not stdapi.Void:
367 self.dump_ret(function, "__result")
368 print ' Trace::EndLeave();'
369 if function.type is not stdapi.Void:
370 self.wrap_ret(function, "__result")
371 print ' return __result;'
375 def dump_arg(self, function, arg):
376 print ' Trace::BeginArg(%u);' % (arg.index,)
377 dump_instance(arg.type, arg.name)
378 print ' Trace::EndArg();'
380 def wrap_arg(self, function, arg):
381 wrap_instance(arg.type, arg.name)
383 def unwrap_arg(self, function, arg):
384 unwrap_instance(arg.type, arg.name)
386 def dump_ret(self, function, instance):
387 print ' Trace::BeginReturn();'
388 dump_instance(function.type, instance)
389 print ' Trace::EndReturn();'
391 def wrap_ret(self, function, instance):
392 wrap_instance(function.type, instance)
394 def unwrap_ret(self, function, instance):
395 unwrap_instance(function.type, instance)
397 def interface_wrap_impl(self, interface):
398 print '%s::%s(%s * pInstance) {' % (interface_wrap_name(interface), interface_wrap_name(interface), interface.name)
399 print ' m_pInstance = pInstance;'
402 print '%s::~%s() {' % (interface_wrap_name(interface), interface_wrap_name(interface))
405 for method in interface.itermethods():
406 self.trace_method(interface, method)
409 def trace_method(self, interface, method):
410 print method.prototype(interface_wrap_name(interface) + '::' + method.name) + ' {'
411 print ' static const char * __args[%u] = {%s};' % (len(method.args) + 1, ', '.join(['"this"'] + ['"%s"' % arg.name for arg in method.args]))
412 print ' static const Trace::FunctionSig __sig = {%u, "%s", %u, __args};' % (int(method.id), interface.name + '::' + method.name, len(method.args) + 1)
413 print ' unsigned __call = Trace::BeginEnter(__sig);'
414 print ' Trace::BeginArg(0);'
415 print ' Trace::LiteralOpaque((const void *)m_pInstance);'
416 print ' Trace::EndArg();'
417 for arg in method.args:
419 self.unwrap_arg(method, arg)
420 self.dump_arg(method, arg)
421 if method.type is stdapi.Void:
424 print ' %s __result;' % method.type
425 result = '__result = '
426 print ' Trace::EndEnter();'
427 print ' %sm_pInstance->%s(%s);' % (result, method.name, ', '.join([str(arg.name) for arg in method.args]))
428 print ' Trace::BeginLeave(__call);'
429 for arg in method.args:
431 self.dump_arg(method, arg)
432 self.wrap_arg(method, arg)
433 if method.type is not stdapi.Void:
434 print ' Trace::BeginReturn();'
435 dump_instance(method.type, "__result")
436 print ' Trace::EndReturn();'
437 wrap_instance(method.type, '__result')
438 print ' Trace::EndLeave();'
439 if method.name == 'QueryInterface':
440 print ' if (*ppvObj == m_pInstance)'
441 print ' *ppvObj = this;'
442 if method.name == 'Release':
443 assert method.type is not stdapi.Void
444 print ' if (!__result)'
445 print ' delete this;'
446 if method.type is not stdapi.Void:
447 print ' return __result;'
452 class DllTracer(Tracer):
454 def __init__(self, dllname):
455 self.dllname = dllname
457 def get_function_address(self, function):
458 return '__GetProcAddress("%s")' % (function.name,)
461 def header(self, api):
462 Tracer.header(self, api)
465 static HINSTANCE g_hDll = NULL;
468 __GetProcAddress(LPCSTR lpProcName)
471 char szDll[MAX_PATH] = {0};
473 if (!GetSystemDirectoryA(szDll, MAX_PATH)) {
477 strcat(szDll, "\\\\%s");
479 g_hDll = LoadLibraryA(szDll);
485 return GetProcAddress(g_hDll, lpProcName);