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_
38 #include "trace_format.hpp"
39 #include "trace_model.hpp"
42 #define TRACE_VERBOSE 0
53 typedef std::map<size_t, std::string> namemap;
56 typedef std::map<unsigned, Call *> callmap;
59 typedef std::map<size_t, Call::Signature *> FunctionMap;
60 FunctionMap functions;
62 typedef std::map<size_t, Enum *> EnumMap;
65 typedef std::map<size_t, Bitmask::Signature *> BitmaskMap;
68 unsigned next_call_no;
80 bool open(const char *filename) {
81 unsigned long long version;
83 file = gzopen(filename, "rb");
88 version = read_uint();
89 if (version != TRACE_VERSION) {
90 std::cerr << "error: unsupported format version" << version << "\n";
104 Call *parse_call(void) {
108 case Trace::EVENT_ENTER:
111 case Trace::EVENT_LEAVE:
112 return parse_leave();
113 case Trace::EVENT_MESSAGE:
114 std::cerr << "message: " << read_string() << "\n";
117 std::cerr << "error: unknown call detail " << c << "\n";
126 void parse_enter(void) {
127 size_t id = read_uint();
129 Call::Signature *sig;
130 FunctionMap::const_iterator it = functions.find(id);
131 if (it == functions.end()) {
132 sig = new Call::Signature;
133 sig->name = read_string();
134 unsigned size = read_uint();
135 for (unsigned i = 0; i < size; ++i) {
136 sig->arg_names.push_back(read_string());
144 Call *call = new Call(sig);
145 call->no = next_call_no++;
147 parse_call_details(call);
148 calls[call->no] = call;
151 Call *parse_leave(void) {
152 unsigned call_no = read_uint();
153 Call *call = calls[call_no];
158 parse_call_details(call);
162 void parse_call_details(Call *call) {
166 case Trace::CALL_END:
168 case Trace::CALL_ARG:
171 case Trace::CALL_RET:
172 call->ret = parse_value();
175 std::cerr << "error: unknown call detail " << c << "\n";
184 void parse_arg(Call *call) {
185 unsigned index = read_uint();
186 Value *value = parse_value();
187 if (index >= call->args.size()) {
188 call->args.resize(index + 1);
190 call->args[index] = value;
193 Value *parse_value(void) {
197 case Trace::TYPE_NULL:
199 case Trace::TYPE_FALSE:
200 return new Bool(false);
201 case Trace::TYPE_TRUE:
202 return new Bool(true);
203 case Trace::TYPE_SINT:
205 case Trace::TYPE_UINT:
207 case Trace::TYPE_FLOAT:
208 return parse_float();
209 case Trace::TYPE_DOUBLE:
210 return parse_double();
211 case Trace::TYPE_STRING:
212 return parse_string();
213 case Trace::TYPE_ENUM:
215 case Trace::TYPE_BITMASK:
216 return parse_bitmask();
217 case Trace::TYPE_ARRAY:
218 return parse_array();
219 case Trace::TYPE_STRUCT:
220 return parse_struct();
221 case Trace::TYPE_BLOB:
223 case Trace::TYPE_OPAQUE:
224 return parse_opaque();
226 std::cerr << "error: unknown type " << c << "\n";
232 Value *parse_sint() {
233 return new SInt(-(signed long long)read_uint());
236 Value *parse_uint() {
237 return new UInt(read_uint());
240 Value *parse_float() {
242 gzread(file, &value, sizeof value);
243 return new Float(value);
246 Value *parse_double() {
248 gzread(file, &value, sizeof value);
249 return new Float(value);
252 Value *parse_string() {
253 return new String(read_string());
256 Value *parse_enum() {
257 size_t id = read_uint();
259 EnumMap::const_iterator it = enums.find(id);
260 if (it == enums.end()) {
261 std::string name = read_string();
262 Value *value = parse_value();
263 sig = new Enum(name, value);
272 Value *parse_bitmask() {
273 size_t id = read_uint();
274 Bitmask::Signature *sig;
275 BitmaskMap::const_iterator it = bitmasks.find(id);
276 if (it == bitmasks.end()) {
277 size_t size = read_uint();
278 sig = new Bitmask::Signature(size);
279 for (Bitmask::Signature::iterator it = sig->begin(); it != sig->end(); ++it) {
280 it->first = read_string();
281 it->second = read_uint();
290 unsigned long long value = read_uint();
292 return new Bitmask(sig, value);
295 Value *parse_array(void) {
296 size_t len = read_uint();
297 Array *array = new Array(len);
298 for (size_t i = 0; i < len; ++i) {
299 array->values[i] = parse_value();
304 Value *parse_blob(void) {
305 size_t size = read_uint();
306 Blob *blob = new Blob(size);
308 gzread(file, blob->buf, size);
313 Value *parse_struct() {
314 size_t length = read_uint();
316 for (size_t i = 0; i < length; ++i) {
317 std::string name = read_name();
318 Value *value = parse_value();
319 std::cout << " " << name << " = " << value << "\n";
324 Value *parse_opaque() {
325 unsigned long long addr;
328 return new UInt(addr);
331 std::string read_name(void) {
333 size_t id = read_uint();
334 if (id >= names.size()) {
335 assert(id == names.size());
336 name = read_string();
343 std::cerr << "\tNAME " << id << " " << name << "\n";
348 std::string read_string(void) {
349 size_t len = read_uint();
351 return std::string();
353 char * buf = new char[len];
354 gzread(file, buf, len);
355 std::string value(buf, len);
358 std::cerr << "\tSTRING \"" << value << "\"\n";
363 unsigned long long read_uint(void) {
364 unsigned long long value = 0;
372 value |= (unsigned long long)(c & 0x7f) << shift;
376 std::cerr << "\tUINT " << value << "\n";
381 int read_byte(void) {
382 int c = gzgetc(file);
385 std::cerr << "\tEOF" << "\n";
387 std::cerr << "\tBYTE 0x" << std::hex << c << std::dec << "\n";
394 } /* namespace Trace */
396 #endif /* _TRACE_PARSER_HPP_ */