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// Copyright 2021 The Pigweed Authors
//
// 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
//
// https://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.
#pragma once
#include <optional>
#include <string_view>
#include "pw_bytes/span.h"
#include "pw_function/function.h"
#include "pw_protobuf/encoder.h"
#include "pw_status/status.h"
#include "pw_thread_protos/thread.pwpb.h"
namespace pw::thread {
// Stack dump callback functions populate a thread's raw_backtrace or raw_stack
// field. This should encode either raw_backtrace or raw_stack to the provided
// Thread stream encoder.
using ProcessThreadStackCallback =
Function<Status(proto::pwpb::Thread::StreamEncoder&, ConstByteSpan)>;
struct StackContext {
std::string_view thread_name;
uintptr_t stack_low_addr;
uintptr_t stack_high_addr;
uintptr_t stack_pointer;
std::optional<uintptr_t> stack_pointer_est_peak;
};
// Takes the provided StackContext, and writes stack context to the provided
// Thread encoder. After stack context is captured, the thread_stack_callback is
// invoked to capture either the raw_stack or raw_backtrace to the same encoder.
//
// Captures the following proto fields:
// pw.thread.Thread:
// stack_start_pointer
// stack_end_pointer
// stack_pointer
Status SnapshotStack(const StackContext& stack,
proto::pwpb::Thread::StreamEncoder& encoder,
const ProcessThreadStackCallback& thread_stack_callback);
} // namespace pw::thread
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