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, Struct::Signature *> StructMap;
65 typedef std::map<size_t, Enum *> EnumMap;
68 typedef std::map<size_t, Bitmask::Signature *> BitmaskMap;
71 unsigned next_call_no;
83 bool open(const char *filename) {
84 unsigned long long version;
86 file = gzopen(filename, "rb");
91 version = read_uint();
92 if (version != TRACE_VERSION) {
93 std::cerr << "error: unsupported format version" << version << "\n";
107 Call *parse_call(void) {
111 case Trace::EVENT_ENTER:
114 case Trace::EVENT_LEAVE:
115 return parse_leave();
116 case Trace::EVENT_MESSAGE:
117 std::cerr << "message: " << read_string() << "\n";
120 std::cerr << "error: unknown call detail " << c << "\n";
129 void parse_enter(void) {
130 size_t id = read_uint();
132 Call::Signature *sig;
133 FunctionMap::const_iterator it = functions.find(id);
134 if (it == functions.end()) {
135 sig = new Call::Signature;
136 sig->name = read_string();
137 unsigned size = read_uint();
138 for (unsigned i = 0; i < size; ++i) {
139 sig->arg_names.push_back(read_string());
147 Call *call = new Call(sig);
148 call->no = next_call_no++;
150 parse_call_details(call);
151 calls[call->no] = call;
154 Call *parse_leave(void) {
155 unsigned call_no = read_uint();
156 Call *call = calls[call_no];
161 parse_call_details(call);
165 void parse_call_details(Call *call) {
169 case Trace::CALL_END:
171 case Trace::CALL_ARG:
174 case Trace::CALL_RET:
175 call->ret = parse_value();
178 std::cerr << "error: unknown call detail " << c << "\n";
187 void parse_arg(Call *call) {
188 unsigned index = read_uint();
189 Value *value = parse_value();
190 if (index >= call->args.size()) {
191 call->args.resize(index + 1);
193 call->args[index] = value;
196 Value *parse_value(void) {
200 case Trace::TYPE_NULL:
202 case Trace::TYPE_FALSE:
203 return new Bool(false);
204 case Trace::TYPE_TRUE:
205 return new Bool(true);
206 case Trace::TYPE_SINT:
208 case Trace::TYPE_UINT:
210 case Trace::TYPE_FLOAT:
211 return parse_float();
212 case Trace::TYPE_DOUBLE:
213 return parse_double();
214 case Trace::TYPE_STRING:
215 return parse_string();
216 case Trace::TYPE_ENUM:
218 case Trace::TYPE_BITMASK:
219 return parse_bitmask();
220 case Trace::TYPE_ARRAY:
221 return parse_array();
222 case Trace::TYPE_STRUCT:
223 return parse_struct();
224 case Trace::TYPE_BLOB:
226 case Trace::TYPE_OPAQUE:
227 return parse_opaque();
229 std::cerr << "error: unknown type " << c << "\n";
235 Value *parse_sint() {
236 return new SInt(-(signed long long)read_uint());
239 Value *parse_uint() {
240 return new UInt(read_uint());
243 Value *parse_float() {
245 gzread(file, &value, sizeof value);
246 return new Float(value);
249 Value *parse_double() {
251 gzread(file, &value, sizeof value);
252 return new Float(value);
255 Value *parse_string() {
256 return new String(read_string());
259 Value *parse_enum() {
260 size_t id = read_uint();
262 EnumMap::const_iterator it = enums.find(id);
263 if (it == enums.end()) {
264 std::string name = read_string();
265 Value *value = parse_value();
266 sig = new Enum(name, value);
275 Value *parse_bitmask() {
276 size_t id = read_uint();
277 Bitmask::Signature *sig;
278 BitmaskMap::const_iterator it = bitmasks.find(id);
279 if (it == bitmasks.end()) {
280 size_t size = read_uint();
281 sig = new Bitmask::Signature(size);
282 for (Bitmask::Signature::iterator it = sig->begin(); it != sig->end(); ++it) {
283 it->first = read_string();
284 it->second = read_uint();
293 unsigned long long value = read_uint();
295 return new Bitmask(sig, value);
298 Value *parse_array(void) {
299 size_t len = read_uint();
300 Array *array = new Array(len);
301 for (size_t i = 0; i < len; ++i) {
302 array->values[i] = parse_value();
307 Value *parse_blob(void) {
308 size_t size = read_uint();
309 Blob *blob = new Blob(size);
311 gzread(file, blob->buf, size);
316 Value *parse_struct() {
317 size_t id = read_uint();
319 Struct::Signature *sig;
320 StructMap::const_iterator it = structs.find(id);
321 if (it == structs.end()) {
322 sig = new Struct::Signature;
323 sig->name = read_string();
324 unsigned size = read_uint();
325 for (unsigned i = 0; i < size; ++i) {
326 sig->member_names.push_back(read_string());
334 Struct *value = new Struct(sig);
336 for (size_t i = 0; i < sig->member_names.size(); ++i) {
337 value->members[i] = parse_value();
343 Value *parse_opaque() {
344 unsigned long long addr;
347 return new UInt(addr);
350 std::string read_name(void) {
352 size_t id = read_uint();
353 if (id >= names.size()) {
354 assert(id == names.size());
355 name = read_string();
362 std::cerr << "\tNAME " << id << " " << name << "\n";
367 std::string read_string(void) {
368 size_t len = read_uint();
370 return std::string();
372 char * buf = new char[len];
373 gzread(file, buf, len);
374 std::string value(buf, len);
377 std::cerr << "\tSTRING \"" << value << "\"\n";
382 unsigned long long read_uint(void) {
383 unsigned long long value = 0;
391 value |= (unsigned long long)(c & 0x7f) << shift;
395 std::cerr << "\tUINT " << value << "\n";
400 int read_byte(void) {
401 int c = gzgetc(file);
404 std::cerr << "\tEOF" << "\n";
406 std::cerr << "\tBYTE 0x" << std::hex << c << std::dec << "\n";
413 } /* namespace Trace */
415 #endif /* _TRACE_PARSER_HPP_ */