stack_functions.cc | Explore in Territory

/*
 * Copyright (C) 2023 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.
 */

#include "src/trace_processor/perfetto_sql/intrinsics/functions/stack_functions.h"

#include <stdlib.h>
#include <cstdint>
#include <cstring>
#include <deque>
#include <iterator>
#include <optional>
#include <type_traits>
#include <vector>

#include "perfetto/base/logging.h"
#include "perfetto/base/status.h"
#include "perfetto/protozero/scattered_heap_buffer.h"
#include "perfetto/trace_processor/basic_types.h"
#include "perfetto/trace_processor/status.h"
#include "protos/perfetto/trace_processor/stack.pbzero.h"
#include "src/trace_processor/perfetto_sql/engine/perfetto_sql_engine.h"
#include "src/trace_processor/perfetto_sql/intrinsics/functions/sql_function.h"
#include "src/trace_processor/sqlite/sqlite_utils.h"
#include "src/trace_processor/storage/trace_storage.h"
#include "src/trace_processor/types/trace_processor_context.h"
#include "src/trace_processor/util/status_macros.h"

namespace perfetto {
namespace trace_processor {
namespace {

Stack;

util::Status SetBytesOutputValue(const std::vector<uint8_t>& src,
                                 SqlValue& out,
                                 SqlFunction::Destructors& destructors) { … }

// CAT_STACKS(root BLOB/STRING, level_1 BLOB/STRING, …, leaf BLOB/STRING)
// Creates a Stack by concatenating other Stacks. Also accepts strings for which
// it generates a fake Frame
struct CatStacksFunction : public SqlFunction { … };

// STACK_FROM_STACK_PROFILE_CALLSITE(callsite_id LONG, [annotate BOOLEAN])
// Creates a stack by taking a callsite_id (reference to the
// stack_profile_callsite table) and generating a list of frames (by walking the
// stack_profile_callsite table)
// Optionally annotates frames (annotate param has a default value of false)
//
// Important: Annotations might interfere with certain aggregations, as we
// will could have a frame that is annotated with different annotations. That
// will lead to multiple functions being generated (same name, line etc, but
// different annotation).
struct StackFromStackProfileCallsiteFunction : public SqlFunction { … };

// STACK_FROM_STACK_PROFILE_FRAME(frame_id LONG)
// Creates a stack with just the frame referenced by frame_id (reference to the
// stack_profile_frame table)
struct StackFromStackProfileFrameFunction : public SqlFunction { … };

}  // namespace

base::Status RegisterStackFunctions(PerfettoSqlEngine* engine,
                                    TraceProcessorContext* context) { … }

}  // namespace trace_processor
}  // namespace perfetto
chromium/third_party/perfetto/src/trace_processor/perfetto_sql/intrinsics/functions/stack_functions.cc
