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/*
* Copyright (C) 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef SRC_TRACE_PROCESSOR_IMPORTERS_SYSTRACE_SYSTRACE_PARSER_H_
#define SRC_TRACE_PROCESSOR_IMPORTERS_SYSTRACE_SYSTRACE_PARSER_H_
#include <ostream>
#include "src/trace_processor/trace_processor_context.h"
#include "perfetto/base/logging.h"
#include "perfetto/ext/base/string_utils.h"
#include "perfetto/ext/base/string_view.h"
#include "src/trace_processor/trace_storage.h"
namespace perfetto {
namespace trace_processor {
namespace systrace_utils {
// Visible for unittesting.
enum class SystraceParseResult { kFailure = 0, kUnsupported, kSuccess };
// Visible for unittesting.
struct SystraceTracePoint {
SystraceTracePoint() {}
static SystraceTracePoint B(uint32_t tgid, base::StringView name) {
return SystraceTracePoint('B', tgid, std::move(name), 0);
}
static SystraceTracePoint E(uint32_t tgid) {
return SystraceTracePoint('E', tgid, {}, 0);
}
static SystraceTracePoint C(uint32_t tgid,
base::StringView name,
double value) {
return SystraceTracePoint('C', tgid, std::move(name), value);
}
static SystraceTracePoint S(uint32_t tgid,
base::StringView name,
double value) {
return SystraceTracePoint('S', tgid, std::move(name), value);
}
static SystraceTracePoint F(uint32_t tgid,
base::StringView name,
double value) {
return SystraceTracePoint('F', tgid, std::move(name), value);
}
SystraceTracePoint(char p, uint32_t tg, base::StringView n, double v)
: phase(p), tgid(tg), name(std::move(n)), value(v) {}
// Phase can be one of B, E, C, S, F.
char phase = '\0';
uint32_t tgid = 0;
// For phase = 'B' and phase = 'C' only.
base::StringView name;
// For phase = 'C' only.
double value = 0;
// Visible for unittesting.
friend std::ostream& operator<<(std::ostream& os,
const SystraceTracePoint& point) {
return os << "SystraceTracePoint{'" << point.phase << "', " << point.tgid
<< ", \"" << point.name.ToStdString() << "\", " << point.value
<< "}";
}
};
// We have to handle trace_marker events of a few different types:
// 1. some random text
// 2. B|1636|pokeUserActivity
// 3. E|1636
// 4. C|1636|wq:monitor|0
// 5. S|1636|frame_capture|123
// 6. F|1636|frame_capture|456
// Visible for unittesting.
inline SystraceParseResult ParseSystraceTracePoint(base::StringView str,
SystraceTracePoint* out) {
const char* s = str.data();
size_t len = str.size();
*out = {};
constexpr const char* kClockSyncPrefix = "trace_event_clock_sync:";
if (len >= strlen(kClockSyncPrefix) &&
strncmp(kClockSyncPrefix, s, strlen(kClockSyncPrefix)) == 0)
return SystraceParseResult::kUnsupported;
if (len < 2)
return SystraceParseResult::kFailure;
// If str matches '[BEC]\|[0-9]+[\|\n]?' set tgid_length to the length of
// the number. Otherwise return kFailure.
if (s[1] != '|' && s[1] != '\n')
return SystraceParseResult::kFailure;
char ph = s[0];
if (ph != 'B' && ph != 'E' && ph != 'C' && ph != 'S' && ph != 'F')
return SystraceParseResult::kFailure;
size_t tgid_length = 0;
for (size_t i = 2; i < len; i++) {
if (s[i] == '|' || s[i] == '\n') {
break;
}
if (s[i] < '0' || s[i] > '9')
return SystraceParseResult::kFailure;
tgid_length++;
}
std::string tgid_str(s + 2, tgid_length);
out->tgid = base::StringToUInt32(tgid_str).value_or(0);
out->phase = ph;
switch (ph) {
case 'B': {
size_t name_index = 2 + tgid_length + 1;
out->name = base::StringView(
s + name_index, len - name_index - (s[len - 1] == '\n' ? 1 : 0));
if (out->name.size() == 0)
return SystraceParseResult::kFailure;
return SystraceParseResult::kSuccess;
}
case 'E': {
return SystraceParseResult::kSuccess;
}
case 'S':
case 'F':
case 'C': {
size_t name_index = 2 + tgid_length + 1;
base::Optional<size_t> name_length;
for (size_t i = name_index; i < len; i++) {
if (s[i] == '|') {
name_length = i - name_index;
break;
}
}
if (!name_length.has_value())
return SystraceParseResult::kFailure;
out->name = base::StringView(s + name_index, name_length.value());
size_t value_index = name_index + name_length.value() + 1;
size_t value_len = len - value_index;
if (value_len == 0)
return SystraceParseResult::kFailure;
if (*(s + value_index + value_len - 1) == '\n')
value_len--;
std::string value_str(s + value_index, value_len);
base::Optional<double> maybe_value = base::StringToDouble(value_str);
if (!maybe_value.has_value()) {
return SystraceParseResult::kFailure;
}
out->value = maybe_value.value();
return SystraceParseResult::kSuccess;
}
default:
return SystraceParseResult::kFailure;
}
}
// Visible for unittesting.
inline bool operator==(const SystraceTracePoint& x,
const SystraceTracePoint& y) {
return std::tie(x.phase, x.tgid, x.name, x.value) ==
std::tie(y.phase, y.tgid, y.name, y.value);
}
} // namespace systrace_utils
class SystraceParser : public Destructible {
public:
static SystraceParser* GetOrCreate(TraceProcessorContext* context) {
if (!context->systrace_parser) {
context->systrace_parser.reset(new SystraceParser(context));
}
return static_cast<SystraceParser*>(context->systrace_parser.get());
}
~SystraceParser() override;
void ParsePrintEvent(int64_t ts, uint32_t pid, base::StringView event);
void ParseSdeTracingMarkWrite(int64_t ts,
uint32_t pid,
char trace_type,
bool trace_begin,
base::StringView trace_name,
uint32_t tgid,
int64_t value);
void ParseZeroEvent(int64_t ts,
uint32_t pid,
int32_t flag,
base::StringView name,
uint32_t tgid,
int64_t value);
private:
explicit SystraceParser(TraceProcessorContext*);
void ParseSystracePoint(int64_t ts,
uint32_t pid,
systrace_utils::SystraceTracePoint event);
TraceProcessorContext* const context_;
const StringId lmk_id_;
};
} // namespace trace_processor
} // namespace perfetto
#endif // SRC_TRACE_PROCESSOR_IMPORTERS_SYSTRACE_SYSTRACE_PARSER_H_
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