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, Bitmask::Signature *> BitmaskMap;
65 unsigned next_call_no;
77 bool open(const char *filename) {
78 unsigned long long version;
80 file = gzopen(filename, "rb");
85 version = read_uint();
86 if (version != TRACE_VERSION) {
87 std::cerr << "error: unsupported format version" << version << "\n";
101 Call *parse_call(void) {
105 case Trace::EVENT_ENTER:
108 case Trace::EVENT_LEAVE:
109 return parse_leave();
110 case Trace::EVENT_MESSAGE:
111 std::cerr << "message: " << read_string() << "\n";
114 std::cerr << "error: unknown call detail " << c << "\n";
123 void parse_enter(void) {
124 size_t id = read_uint();
126 Call::Signature *sig;
127 FunctionMap::const_iterator it = functions.find(id);
128 if (it == functions.end()) {
129 sig = new Call::Signature;
130 sig->name = read_string();
131 unsigned size = read_uint();
132 for (unsigned i = 0; i < size; ++i) {
133 sig->arg_names.push_back(read_string());
141 Call *call = new Call(sig);
142 call->no = next_call_no++;
144 parse_call_details(call);
145 calls[call->no] = call;
148 Call *parse_leave(void) {
149 unsigned call_no = read_uint();
150 Call *call = calls[call_no];
155 parse_call_details(call);
159 void parse_call_details(Call *call) {
163 case Trace::CALL_END:
165 case Trace::CALL_ARG:
168 case Trace::CALL_RET:
169 call->ret = parse_value();
172 std::cerr << "error: unknown call detail " << c << "\n";
181 void parse_arg(Call *call) {
182 unsigned index = read_uint();
183 Value *value = parse_value();
184 if (index >= call->args.size()) {
185 call->args.resize(index + 1);
187 call->args[index] = value;
190 Value *parse_value(void) {
194 case Trace::TYPE_NULL:
196 case Trace::TYPE_FALSE:
197 return new Bool(false);
198 case Trace::TYPE_TRUE:
199 return new Bool(true);
200 case Trace::TYPE_SINT:
202 case Trace::TYPE_UINT:
204 case Trace::TYPE_FLOAT:
205 return parse_float();
206 case Trace::TYPE_DOUBLE:
207 return parse_double();
208 case Trace::TYPE_STRING:
209 return parse_string();
210 case Trace::TYPE_CONST:
211 return parse_const();
212 case Trace::TYPE_BITMASK:
213 return parse_bitmask();
214 case Trace::TYPE_ARRAY:
215 return parse_array();
216 case Trace::TYPE_STRUCT:
217 return parse_struct();
218 case Trace::TYPE_BLOB:
220 case Trace::TYPE_OPAQUE:
221 return parse_opaque();
223 std::cerr << "error: unknown type " << c << "\n";
229 Value *parse_sint() {
230 return new SInt(-(signed long long)read_uint());
233 Value *parse_uint() {
234 return new UInt(read_uint());
237 Value *parse_float() {
239 gzread(file, &value, sizeof value);
240 return new Float(value);
243 Value *parse_double() {
245 gzread(file, &value, sizeof value);
246 return new Float(value);
249 Value *parse_string() {
250 return new String(read_string());
253 Value *parse_const() {
254 std::string name = read_name();
255 Value *value = parse_value();
256 return new Const(name, value);
259 Value *parse_bitmask() {
260 size_t id = read_uint();
261 Bitmask::Signature *sig;
262 BitmaskMap::const_iterator it = bitmasks.find(id);
263 if (it == bitmasks.end()) {
264 size_t size = read_uint();
265 sig = new Bitmask::Signature(size);
266 for (Bitmask::Signature::iterator it = sig->begin(); it != sig->end(); ++it) {
267 it->first = read_string();
268 it->second = read_uint();
277 unsigned long long value = read_uint();
279 return new Bitmask(sig, value);
282 Value *parse_array(void) {
283 size_t len = read_uint();
284 Array *array = new Array(len);
285 for (size_t i = 0; i < len; ++i) {
286 array->values[i] = parse_value();
291 Value *parse_blob(void) {
292 size_t size = read_uint();
293 Blob *blob = new Blob(size);
295 gzread(file, blob->buf, size);
300 Value *parse_struct() {
301 size_t length = read_uint();
303 for (size_t i = 0; i < length; ++i) {
304 std::string name = read_name();
305 Value *value = parse_value();
306 std::cout << " " << name << " = " << value << "\n";
311 Value *parse_opaque() {
312 unsigned long long addr;
315 return new UInt(addr);
318 std::string read_name(void) {
320 size_t id = read_uint();
321 if (id >= names.size()) {
322 assert(id == names.size());
323 name = read_string();
330 std::cerr << "\tNAME " << id << " " << name << "\n";
335 std::string read_string(void) {
336 size_t len = read_uint();
338 return std::string();
340 char * buf = new char[len];
341 gzread(file, buf, len);
342 std::string value(buf, len);
345 std::cerr << "\tSTRING \"" << value << "\"\n";
350 unsigned long long read_uint(void) {
351 unsigned long long value = 0;
359 value |= (unsigned long long)(c & 0x7f) << shift;
363 std::cerr << "\tUINT " << value << "\n";
368 int read_byte(void) {
369 int c = gzgetc(file);
372 std::cerr << "\tEOF" << "\n";
374 std::cerr << "\tBYTE 0x" << std::hex << c << std::dec << "\n";
381 } /* namespace Trace */
383 #endif /* _TRACE_PARSER_HPP_ */