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 **************************************************************************/
26 #ifndef _TRACE_PARSER_HPP_
27 #define _TRACE_PARSER_HPP_
39 #include "trace_format.hpp"
40 #include "trace_model.hpp"
43 #define TRACE_VERBOSE 0
54 typedef std::list<Call *> CallList;
57 typedef std::vector<Call::Signature *> FunctionMap;
58 FunctionMap functions;
60 typedef std::vector<Struct::Signature *> StructMap;
63 typedef std::vector<Enum::Signature *> EnumMap;
66 typedef std::vector<Bitmask::Signature *> BitmaskMap;
69 unsigned next_call_no;
72 static unsigned long long version;
83 bool open(const char *filename) {
84 file = gzopen(filename, "rb");
89 version = read_uint();
90 if (version > TRACE_VERSION) {
91 std::cerr << "error: unsupported format version" << version << "\n";
105 Call *parse_call(void) {
109 case Trace::EVENT_ENTER:
112 case Trace::EVENT_LEAVE:
113 return parse_leave();
114 case Trace::EVENT_MESSAGE:
115 std::cerr << "message: " << read_string() << "\n";
118 std::cerr << "error: unknown call detail " << c << "\n";
128 * Helper function to lookup an ID in a vector, resizing the vector if it doesn't fit.
131 T *lookup(std::vector<T *> &map, size_t index) {
132 if (index >= map.size()) {
133 map.resize(index + 1);
140 void parse_enter(void) {
141 size_t id = read_uint();
143 Call::Signature *sig = lookup(functions, id);
145 sig = new Call::Signature;
146 sig->name = read_string();
147 unsigned size = read_uint();
148 for (unsigned i = 0; i < size; ++i) {
149 sig->arg_names.push_back(read_string());
155 Call *call = new Call(sig);
156 call->no = next_call_no++;
158 parse_call_details(call);
160 calls.push_back(call);
163 Call *parse_leave(void) {
164 unsigned call_no = read_uint();
167 for (CallList::iterator it = calls.begin(); it != calls.end(); ++it) {
168 if ((*it)->no == call_no) {
178 parse_call_details(call);
182 void parse_call_details(Call *call) {
186 case Trace::CALL_END:
188 case Trace::CALL_ARG:
191 case Trace::CALL_RET:
192 call->ret = parse_value();
195 std::cerr << "error: unknown call detail " << c << "\n";
204 void parse_arg(Call *call) {
205 unsigned index = read_uint();
206 Value *value = parse_value();
207 if (index >= call->args.size()) {
208 call->args.resize(index + 1);
210 call->args[index] = value;
213 Value *parse_value(void) {
217 case Trace::TYPE_NULL:
219 case Trace::TYPE_FALSE:
220 return new Bool(false);
221 case Trace::TYPE_TRUE:
222 return new Bool(true);
223 case Trace::TYPE_SINT:
225 case Trace::TYPE_UINT:
227 case Trace::TYPE_FLOAT:
228 return parse_float();
229 case Trace::TYPE_DOUBLE:
230 return parse_double();
231 case Trace::TYPE_STRING:
232 return parse_string();
233 case Trace::TYPE_ENUM:
235 case Trace::TYPE_BITMASK:
236 return parse_bitmask();
237 case Trace::TYPE_ARRAY:
238 return parse_array();
239 case Trace::TYPE_STRUCT:
240 return parse_struct();
241 case Trace::TYPE_BLOB:
243 case Trace::TYPE_OPAQUE:
244 return parse_opaque();
246 std::cerr << "error: unknown type " << c << "\n";
252 Value *parse_sint() {
253 return new SInt(-(signed long long)read_uint());
256 Value *parse_uint() {
257 return new UInt(read_uint());
260 Value *parse_float() {
262 gzread(file, &value, sizeof value);
263 return new Float(value);
266 Value *parse_double() {
268 gzread(file, &value, sizeof value);
269 return new Float(value);
272 Value *parse_string() {
273 return new String(read_string());
276 Value *parse_enum() {
277 size_t id = read_uint();
278 Enum::Signature *sig = lookup(enums, id);
280 std::string name = read_string();
281 Value *value = parse_value();
282 sig = new Enum::Signature(name, value);
286 return new Enum(sig);
289 Value *parse_bitmask() {
290 size_t id = read_uint();
291 Bitmask::Signature *sig = lookup(bitmasks, id);
293 size_t size = read_uint();
294 sig = new Bitmask::Signature(size);
295 for (Bitmask::Signature::iterator it = sig->begin(); it != sig->end(); ++it) {
296 it->first = read_string();
297 it->second = read_uint();
304 unsigned long long value = read_uint();
306 return new Bitmask(sig, value);
309 Value *parse_array(void) {
310 size_t len = read_uint();
311 Array *array = new Array(len);
312 for (size_t i = 0; i < len; ++i) {
313 array->values[i] = parse_value();
318 Value *parse_blob(void) {
319 size_t size = read_uint();
320 Blob *blob = new Blob(size);
322 gzread(file, blob->buf, (unsigned)size);
327 Value *parse_struct() {
328 size_t id = read_uint();
330 Struct::Signature *sig = lookup(structs, id);
332 sig = new Struct::Signature;
333 sig->name = read_string();
334 unsigned size = read_uint();
335 for (unsigned i = 0; i < size; ++i) {
336 sig->member_names.push_back(read_string());
342 Struct *value = new Struct(sig);
344 for (size_t i = 0; i < sig->member_names.size(); ++i) {
345 value->members[i] = parse_value();
351 Value *parse_opaque() {
352 unsigned long long addr;
354 return new Pointer(addr);
357 std::string read_string(void) {
358 size_t len = read_uint();
360 return std::string();
362 char * buf = new char[len];
363 gzread(file, buf, (unsigned)len);
364 std::string value(buf, len);
367 std::cerr << "\tSTRING \"" << value << "\"\n";
372 unsigned long long read_uint(void) {
373 unsigned long long value = 0;
381 value |= (unsigned long long)(c & 0x7f) << shift;
385 std::cerr << "\tUINT " << value << "\n";
390 int read_byte(void) {
391 int c = gzgetc(file);
394 std::cerr << "\tEOF" << "\n";
396 std::cerr << "\tBYTE 0x" << std::hex << c << std::dec << "\n";
403 } /* namespace Trace */
405 #endif /* _TRACE_PARSER_HPP_ */