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// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "util/trace_logging/scoped_trace_operations.h"
#include "absl/types/optional.h"
#include "build/config/features.h"
#include "platform/api/logging.h"
#include "platform/api/trace_logging_platform.h"
#include "platform/base/trace_logging_activation.h"
#if defined(ENABLE_TRACE_LOGGING)
using openscreen::platform::kUnsetTraceId;
using openscreen::platform::TraceCategory;
using openscreen::platform::TraceId;
using openscreen::platform::TraceIdHierarchy;
namespace openscreen {
namespace internal {
// static
bool ScopedTraceOperation::TraceAsyncEnd(const uint32_t line,
const char* file,
TraceId id,
Error::Code e) {
auto end_time = platform::Clock::now();
auto* const current_platform = platform::GetTracingDestination();
if (current_platform == nullptr) {
return false;
}
current_platform->LogAsyncEnd(line, file, end_time, id, e);
return true;
}
ScopedTraceOperation::ScopedTraceOperation(TraceId trace_id,
TraceId parent_id,
TraceId root_id) {
if (traces_ == nullptr) {
// Create the stack if it doesnt' exist.
traces_ = new TraceStack();
// Create a new root node. This will re-call this constructor and add the
// root node to the stack before proceeding with the original node.
root_node_ = new TraceIdSetter(TraceIdHierarchy::Empty());
OSP_DCHECK(!traces_->empty());
}
// Setting trace id fields.
root_id_ = root_id != kUnsetTraceId ? root_id : traces_->top()->root_id_;
parent_id_ =
parent_id != kUnsetTraceId ? parent_id : traces_->top()->trace_id_;
trace_id_ =
trace_id != kUnsetTraceId ? trace_id : trace_id_counter_.fetch_add(1);
// Add this item to the stack.
traces_->push(this);
OSP_DCHECK(traces_->size() < 1024);
}
ScopedTraceOperation::~ScopedTraceOperation() {
OSP_CHECK(traces_ != nullptr && !traces_->empty());
OSP_CHECK_EQ(traces_->top(), this);
traces_->pop();
// If there's only one item left, it must be the root node. Deleting the root
// node will re-call this destructor and delete the traces_ stack.
if (traces_->size() == 1) {
OSP_CHECK_EQ(traces_->top(), root_node_);
delete root_node_;
root_node_ = nullptr;
} else if (traces_->empty()) {
delete traces_;
traces_ = nullptr;
}
}
// static
thread_local ScopedTraceOperation::TraceStack* ScopedTraceOperation::traces_ =
nullptr;
// static
thread_local ScopedTraceOperation* ScopedTraceOperation::root_node_ = nullptr;
// static
std::atomic<std::uint64_t> ScopedTraceOperation::trace_id_counter_{
uint64_t{0x01} << (sizeof(TraceId) * 8 - 1)};
TraceLoggerBase::TraceLoggerBase(TraceCategory::Value category,
const char* name,
const char* file,
uint32_t line,
TraceId current,
TraceId parent,
TraceId root)
: ScopedTraceOperation(current, parent, root),
start_time_(platform::Clock::now()),
result_(Error::Code::kNone),
name_(name),
file_name_(file),
line_number_(line),
category_(category) {}
TraceLoggerBase::TraceLoggerBase(TraceCategory::Value category,
const char* name,
const char* file,
uint32_t line,
TraceIdHierarchy ids)
: TraceLoggerBase(category,
name,
file,
line,
ids.current,
ids.parent,
ids.root) {}
SynchronousTraceLogger::~SynchronousTraceLogger() {
auto* const current_platform = platform::GetTracingDestination();
if (current_platform == nullptr) {
return;
}
auto end_time = platform::Clock::now();
current_platform->LogTrace(this->name_, this->line_number_, this->file_name_,
this->start_time_, end_time, this->to_hierarchy(),
this->result_);
}
AsynchronousTraceLogger::~AsynchronousTraceLogger() {
auto* const current_platform = platform::GetTracingDestination();
if (current_platform == nullptr) {
return;
}
current_platform->LogAsyncStart(this->name_, this->line_number_,
this->file_name_, this->start_time_,
this->to_hierarchy());
}
TraceIdSetter::~TraceIdSetter() = default;
} // namespace internal
} // namespace openscreen
#endif // defined(ENABLE_TRACE_LOGGING)
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