#define _TRACE_PARSER_HPP_
-#include <cassert>
-
#include <iostream>
-#include <map>
#include <list>
-#include <string>
-
-#include <zlib.h>
+#include "trace_file.hpp"
#include "trace_format.hpp"
#include "trace_model.hpp"
-#define TRACE_VERBOSE 0
+namespace Trace {
-namespace Trace {
+struct ParseBookmark
+{
+ File::Offset offset;
+ unsigned next_call_no;
+};
class Parser
{
protected:
- gzFile file;
+ File *file;
+
+ enum Mode {
+ FULL = 0,
+ SCAN,
+ SKIP
+ };
typedef std::list<Call *> CallList;
CallList calls;
- typedef std::vector<Call::Signature *> FunctionMap;
- FunctionMap functions;
+ // Helper template that extends a base signature structure, with additional
+ // parsing information.
+ template< class T >
+ struct SigState : public T {
+ // Offset in the file of where signature was defined. It is used when
+ // reparsing to determine whether the signature definition is to be
+ // expected next or not.
+ File::Offset offset;
+ };
+
+ typedef SigState<FunctionSig> FunctionSigState;
+ typedef SigState<StructSig> StructSigState;
+ typedef SigState<EnumSig> EnumSigState;
+ typedef SigState<BitmaskSig> BitmaskSigState;
+
+ typedef std::vector<FunctionSigState *> FunctionMap;
+ typedef std::vector<StructSigState *> StructMap;
+ typedef std::vector<EnumSigState *> EnumMap;
+ typedef std::vector<BitmaskSigState *> BitmaskMap;
- typedef std::vector<Struct::Signature *> StructMap;
+ FunctionMap functions;
StructMap structs;
-
- typedef std::vector<Enum::Signature *> EnumMap;
EnumMap enums;
-
- typedef std::vector<Bitmask::Signature *> BitmaskMap;
BitmaskMap bitmasks;
unsigned next_call_no;
public:
- static unsigned long long version;
-
- Parser() {
- file = NULL;
- next_call_no = 0;
- }
-
- ~Parser() {
- close();
- }
+ unsigned long long version;
- bool open(const char *filename) {
- file = gzopen(filename, "rb");
- if (!file) {
- return false;
- }
+ Parser();
- version = read_uint();
- if (version > TRACE_VERSION) {
- std::cerr << "error: unsupported format version" << version << "\n";
- return false;
- }
+ ~Parser();
- return true;
- }
+ bool open(const char *filename);
- void close(void) {
- if (file) {
- gzclose(file);
- file = NULL;
- }
- }
+ void close(void);
Call *parse_call(void) {
- do {
- int c = read_byte();
- switch(c) {
- case Trace::EVENT_ENTER:
- parse_enter();
- break;
- case Trace::EVENT_LEAVE:
- return parse_leave();
- case Trace::EVENT_MESSAGE:
- std::cerr << "message: " << read_string() << "\n";
- break;
- default:
- std::cerr << "error: unknown call detail " << c << "\n";
- assert(0);
- /* fallthrough */
- case -1:
- return NULL;
- }
- } while(true);
+ return parse_call(FULL);
}
- /**
- * Helper function to lookup an ID in a vector, resizing the vector if it doesn't fit.
- */
- template<class T>
- T *lookup(std::vector<T *> &map, size_t index) {
- if (index >= map.size()) {
- map.resize(index + 1);
- return NULL;
- } else {
- return map[index];
- }
+ bool supportsOffsets() const
+ {
+ return file->supportsOffsets();
}
- void parse_enter(void) {
- size_t id = read_uint();
-
- Call::Signature *sig = lookup(functions, id);
- if (!sig) {
- sig = new Call::Signature;
- sig->name = read_string();
- unsigned size = read_uint();
- for (unsigned i = 0; i < size; ++i) {
- sig->arg_names.push_back(read_string());
- }
- functions[id] = sig;
- }
- assert(sig);
-
- Call *call = new Call(sig);
- call->no = next_call_no++;
-
- parse_call_details(call);
-
- calls.push_back(call);
- }
+ void getBookmark(ParseBookmark &bookmark);
- Call *parse_leave(void) {
- unsigned call_no = read_uint();
+ void setBookmark(const ParseBookmark &bookmark);
- Call *call = NULL;
- for (CallList::iterator it = calls.begin(); it != calls.end(); ++it) {
- if ((*it)->no == call_no) {
- call = *it;
- calls.erase(it);
- break;
- }
- }
- assert(call);
- if (!call) {
- return NULL;
- }
- parse_call_details(call);
- return call;
+ int percentRead()
+ {
+ return file->percentRead();
}
- void parse_call_details(Call *call) {
- do {
- int c = read_byte();
- switch(c) {
- case Trace::CALL_END:
- return;
- case Trace::CALL_ARG:
- parse_arg(call);
- break;
- case Trace::CALL_RET:
- call->ret = parse_value();
- break;
- default:
- std::cerr << "error: unknown call detail " << c << "\n";
- assert(0);
- /* fallthrough */
- case -1:
- return;
- }
- } while(true);
+ Call *scan_call() {
+ return parse_call(SCAN);
}
- void parse_arg(Call *call) {
- unsigned index = read_uint();
- Value *value = parse_value();
- if (index >= call->args.size()) {
- call->args.resize(index + 1);
- }
- call->args[index] = value;
- }
-
- Value *parse_value(void) {
- int c;
- c = read_byte();
- switch(c) {
- case Trace::TYPE_NULL:
- return new Null;
- case Trace::TYPE_FALSE:
- return new Bool(false);
- case Trace::TYPE_TRUE:
- return new Bool(true);
- case Trace::TYPE_SINT:
- return parse_sint();
- case Trace::TYPE_UINT:
- return parse_uint();
- case Trace::TYPE_FLOAT:
- return parse_float();
- case Trace::TYPE_DOUBLE:
- return parse_double();
- case Trace::TYPE_STRING:
- return parse_string();
- case Trace::TYPE_ENUM:
- return parse_enum();
- case Trace::TYPE_BITMASK:
- return parse_bitmask();
- case Trace::TYPE_ARRAY:
- return parse_array();
- case Trace::TYPE_STRUCT:
- return parse_struct();
- case Trace::TYPE_BLOB:
- return parse_blob();
- case Trace::TYPE_OPAQUE:
- return parse_opaque();
- default:
- std::cerr << "error: unknown type " << c << "\n";
- assert(0);
- return NULL;
- }
- }
+protected:
+ Call *parse_call(Mode mode);
- Value *parse_sint() {
- return new SInt(-(signed long long)read_uint());
- }
+ FunctionSig *parse_function_sig(void);
+ StructSig *parse_struct_sig();
+ EnumSig *parse_enum_sig();
+ BitmaskSig *parse_bitmask_sig();
+
+ Call *parse_Call(Mode mode);
- Value *parse_uint() {
- return new UInt(read_uint());
- }
+ void parse_enter(Mode mode);
- Value *parse_float() {
- float value;
- gzread(file, &value, sizeof value);
- return new Float(value);
- }
+ Call *parse_leave(Mode mode);
- Value *parse_double() {
- double value;
- gzread(file, &value, sizeof value);
- return new Float(value);
- }
+ bool parse_call_details(Call *call, Mode mode);
- Value *parse_string() {
- return new String(read_string());
- }
+ void parse_arg(Call *call, Mode mode);
- Value *parse_enum() {
- size_t id = read_uint();
- Enum::Signature *sig = lookup(enums, id);
- if (!sig) {
- std::string name = read_string();
- Value *value = parse_value();
- sig = new Enum::Signature(name, value);
- enums[id] = sig;
+ Value *parse_value(void);
+ void scan_value(void);
+ inline Value *parse_value(Mode mode) {
+ if (mode == FULL) {
+ return parse_value();
+ } else {
+ scan_value();
+ return NULL;
}
- assert(sig);
- return new Enum(sig);
}
- Value *parse_bitmask() {
- size_t id = read_uint();
- Bitmask::Signature *sig = lookup(bitmasks, id);
- if (!sig) {
- size_t size = read_uint();
- sig = new Bitmask::Signature(size);
- for (Bitmask::Signature::iterator it = sig->begin(); it != sig->end(); ++it) {
- it->first = read_string();
- it->second = read_uint();
- assert(it->second);
- }
- bitmasks[id] = sig;
- }
- assert(sig);
+ Value *parse_sint();
+ void scan_sint();
- unsigned long long value = read_uint();
+ Value *parse_uint();
+ void scan_uint();
- return new Bitmask(sig, value);
- }
+ Value *parse_float();
+ void scan_float();
- Value *parse_array(void) {
- size_t len = read_uint();
- Array *array = new Array(len);
- for (size_t i = 0; i < len; ++i) {
- array->values[i] = parse_value();
- }
- return array;
- }
+ Value *parse_double();
+ void scan_double();
- Value *parse_blob(void) {
- size_t size = read_uint();
- Blob *blob = new Blob(size);
- if (size) {
- gzread(file, blob->buf, (unsigned)size);
- }
- return blob;
- }
+ Value *parse_string();
+ void scan_string();
- Value *parse_struct() {
- size_t id = read_uint();
-
- Struct::Signature *sig = lookup(structs, id);
- if (!sig) {
- sig = new Struct::Signature;
- sig->name = read_string();
- unsigned size = read_uint();
- for (unsigned i = 0; i < size; ++i) {
- sig->member_names.push_back(read_string());
- }
- structs[id] = sig;
- }
- assert(sig);
+ Value *parse_enum();
+ void scan_enum();
- Struct *value = new Struct(sig);
+ Value *parse_bitmask();
+ void scan_bitmask();
- for (size_t i = 0; i < sig->member_names.size(); ++i) {
- value->members[i] = parse_value();
- }
+ Value *parse_array(void);
+ void scan_array(void);
- return value;
- }
+ Value *parse_blob(void);
+ void scan_blob(void);
- Value *parse_opaque() {
- unsigned long long addr;
- addr = read_uint();
- return new Pointer(addr);
- }
+ Value *parse_struct();
+ void scan_struct();
- std::string read_string(void) {
- size_t len = read_uint();
- if (!len) {
- return std::string();
- }
- char * buf = new char[len];
- gzread(file, buf, (unsigned)len);
- std::string value(buf, len);
- delete [] buf;
-#if TRACE_VERBOSE
- std::cerr << "\tSTRING \"" << value << "\"\n";
-#endif
- return value;
- }
+ Value *parse_opaque();
+ void scan_opaque();
- unsigned long long read_uint(void) {
- unsigned long long value = 0;
- int c;
- unsigned shift = 0;
- do {
- c = gzgetc(file);
- if (c == -1) {
- break;
- }
- value |= (unsigned long long)(c & 0x7f) << shift;
- shift += 7;
- } while(c & 0x80);
-#if TRACE_VERBOSE
- std::cerr << "\tUINT " << value << "\n";
-#endif
- return value;
- }
-
- int read_byte(void) {
- int c = gzgetc(file);
-#if TRACE_VERBOSE
- if (c < 0)
- std::cerr << "\tEOF" << "\n";
- else
- std::cerr << "\tBYTE 0x" << std::hex << c << std::dec << "\n";
-#endif
- return c;
- }
-};
+ const char * read_string(void);
+ void skip_string(void);
+ unsigned long long read_uint(void);
+ void skip_uint(void);
-unsigned long long Trace::Parser::version = 0;
+ inline int read_byte(void);
+ inline void skip_byte(void);
+};
} /* namespace Trace */
projects / apitrace / blobdiff