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::map<size_t, Call::Signature *> FunctionMap;
58 FunctionMap functions;
60 typedef std::map<size_t, Struct::Signature *> StructMap;
63 typedef std::map<size_t, Enum *> EnumMap;
66 typedef std::map<size_t, Bitmask::Signature *> BitmaskMap;
69 unsigned next_call_no;
81 bool open(const char *filename) {
82 unsigned long long version;
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";
127 void parse_enter(void) {
128 size_t id = read_uint();
130 Call::Signature *sig;
131 FunctionMap::const_iterator it = functions.find(id);
132 if (it == functions.end()) {
133 sig = new Call::Signature;
134 sig->name = read_string();
135 unsigned size = read_uint();
136 for (unsigned i = 0; i < size; ++i) {
137 sig->arg_names.push_back(read_string());
145 Call *call = new Call(sig);
146 call->no = next_call_no++;
148 parse_call_details(call);
150 calls.push_back(call);
153 Call *parse_leave(void) {
154 unsigned call_no = read_uint();
157 for (CallList::iterator it = calls.begin(); it != calls.end(); ++it) {
158 if ((*it)->no == call_no) {
168 parse_call_details(call);
172 void parse_call_details(Call *call) {
176 case Trace::CALL_END:
178 case Trace::CALL_ARG:
181 case Trace::CALL_RET:
182 call->ret = parse_value();
185 std::cerr << "error: unknown call detail " << c << "\n";
194 void parse_arg(Call *call) {
195 unsigned index = read_uint();
196 Value *value = parse_value();
197 if (index >= call->args.size()) {
198 call->args.resize(index + 1);
200 call->args[index] = value;
203 Value *parse_value(void) {
207 case Trace::TYPE_NULL:
209 case Trace::TYPE_FALSE:
210 return new Bool(false);
211 case Trace::TYPE_TRUE:
212 return new Bool(true);
213 case Trace::TYPE_SINT:
215 case Trace::TYPE_UINT:
217 case Trace::TYPE_FLOAT:
218 return parse_float();
219 case Trace::TYPE_DOUBLE:
220 return parse_double();
221 case Trace::TYPE_STRING:
222 return parse_string();
223 case Trace::TYPE_ENUM:
225 case Trace::TYPE_BITMASK:
226 return parse_bitmask();
227 case Trace::TYPE_ARRAY:
228 return parse_array();
229 case Trace::TYPE_STRUCT:
230 return parse_struct();
231 case Trace::TYPE_BLOB:
233 case Trace::TYPE_OPAQUE:
234 return parse_opaque();
236 std::cerr << "error: unknown type " << c << "\n";
242 Value *parse_sint() {
243 return new SInt(-(signed long long)read_uint());
246 Value *parse_uint() {
247 return new UInt(read_uint());
250 Value *parse_float() {
252 gzread(file, &value, sizeof value);
253 return new Float(value);
256 Value *parse_double() {
258 gzread(file, &value, sizeof value);
259 return new Float(value);
262 Value *parse_string() {
263 return new String(read_string());
266 Value *parse_enum() {
267 size_t id = read_uint();
269 EnumMap::const_iterator it = enums.find(id);
270 if (it == enums.end()) {
271 std::string name = read_string();
272 Value *value = parse_value();
273 sig = new Enum(name, value);
282 Value *parse_bitmask() {
283 size_t id = read_uint();
284 Bitmask::Signature *sig;
285 BitmaskMap::const_iterator it = bitmasks.find(id);
286 if (it == bitmasks.end()) {
287 size_t size = read_uint();
288 sig = new Bitmask::Signature(size);
289 for (Bitmask::Signature::iterator it = sig->begin(); it != sig->end(); ++it) {
290 it->first = read_string();
291 it->second = read_uint();
300 unsigned long long value = read_uint();
302 return new Bitmask(sig, value);
305 Value *parse_array(void) {
306 size_t len = read_uint();
307 Array *array = new Array(len);
308 for (size_t i = 0; i < len; ++i) {
309 array->values[i] = parse_value();
314 Value *parse_blob(void) {
315 size_t size = read_uint();
316 Blob *blob = new Blob(size);
318 gzread(file, blob->buf, size);
323 Value *parse_struct() {
324 size_t id = read_uint();
326 Struct::Signature *sig;
327 StructMap::const_iterator it = structs.find(id);
328 if (it == structs.end()) {
329 sig = new Struct::Signature;
330 sig->name = read_string();
331 unsigned size = read_uint();
332 for (unsigned i = 0; i < size; ++i) {
333 sig->member_names.push_back(read_string());
341 Struct *value = new Struct(sig);
343 for (size_t i = 0; i < sig->member_names.size(); ++i) {
344 value->members[i] = parse_value();
350 Value *parse_opaque() {
351 unsigned long long addr;
354 return new UInt(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, 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_ */