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//
// Copyright © 2020 Arm Ltd and Contributors. All rights reserved.
// SPDX-License-Identifier: MIT
//
#pragma once
#include <iostream>
#include <memory>
#include <sstream>
#include <vector>
namespace arm
{
namespace pipe
{
#if defined(__clang__) &&((__clang_major__>=3)||(__clang_major__==3 && __clang_minor__ >= 5))
# define ARM_PIPE_FALLTHROUGH [[clang::fallthrough]]
#elif defined(__GNUC__) && (__GNUC__ >= 7)
# define ARM_PIPE_FALLTHROUGH __attribute__((fallthrough))
#else
# define ARM_PIPE_FALLTHROUGH ((void)0)
#endif
enum class LogSeverity
{
Trace,
Debug,
Info,
Warning,
Error,
Fatal
};
inline std::string LevelToString(LogSeverity level)
{
switch(level)
{
case LogSeverity::Trace:
return "Trace";
case LogSeverity::Debug:
return "Debug";
case LogSeverity::Info:
return "Info";
case LogSeverity::Warning:
return "Warning";
case LogSeverity::Error:
return "Error";
case LogSeverity::Fatal:
return "Fatal";
default:
return "Log";
}
}
/// Configures the logging behaviour of the ARMNN library.
/// printToStandardOutput: Set to true if log messages should be printed to the standard output.
/// printToDebugOutput: Set to true if log messages be printed to a platform-specific debug output
/// (where supported).
/// severity: All log messages that are at this severity level or higher will be printed, others will be ignored.
void ConfigureLogging(bool printToStandardOutput, bool printToDebugOutput, LogSeverity severity);
class LogSink
{
public:
virtual ~LogSink(){};
virtual void Consume(const std::string&) = 0;
private:
};
class StandardOutputSink : public LogSink
{
public:
void Consume(const std::string& s) override
{
std::cout << s << std::endl;
}
};
struct ScopedRecord
{
ScopedRecord(const std::vector<std::shared_ptr<LogSink>>& sinks, LogSeverity level, bool enabled)
: m_LogSinks(sinks)
, m_Enabled(enabled)
{
if (enabled)
{
m_Os << LevelToString(level) << ": ";
}
}
~ScopedRecord()
{
if (m_Enabled)
{
for (auto sink : m_LogSinks)
{
if (sink)
{
sink->Consume(m_Os.str());
}
}
}
}
ScopedRecord(const ScopedRecord&) = delete;
ScopedRecord& operator=(const ScopedRecord&) = delete;
ScopedRecord& operator=(ScopedRecord&&) = delete;
ScopedRecord(ScopedRecord&& other) = default;
template<typename Streamable>
ScopedRecord& operator<<(const Streamable& s)
{
if (m_Enabled)
{
m_Os << s;
}
return (*this);
}
private:
const std::vector<std::shared_ptr<LogSink>>& m_LogSinks;
std::ostringstream m_Os;
bool m_Enabled;
};
template<LogSeverity Level>
class SimpleLogger
{
public:
SimpleLogger()
: m_Sinks{std::make_shared<StandardOutputSink>()}
, m_Enable(true)
{
}
static SimpleLogger<Level>& Get()
{
static SimpleLogger<Level> logger;
return logger;
}
void Enable(bool enable = true)
{
m_Enable = enable;
}
ScopedRecord StartNewRecord()
{
ScopedRecord record(m_Sinks, Level, m_Enable);
return record;
}
void RemoveAllSinks()
{
m_Sinks.clear();
}
void AddSink(std::shared_ptr<LogSink> sink)
{
m_Sinks.push_back(sink);
}
private:
std::vector<std::shared_ptr<LogSink>> m_Sinks;
bool m_Enable;
};
void SetLogFilter(LogSeverity level);
void SetAllLoggingSinks(bool standardOut, bool debugOut, bool coloured);
enum class BoostLogSeverityMapping
{
trace,
debug,
info,
warning,
error,
fatal
};
constexpr LogSeverity ConvertLogSeverity(BoostLogSeverityMapping severity)
{
return static_cast<LogSeverity>(severity);
}
#define ARM_PIPE_LOG(severity) \
arm::pipe::SimpleLogger<ConvertLogSeverity(arm::pipe::BoostLogSeverityMapping::severity)>::Get().StartNewRecord()
} // namespace pipe
} // namespace arm
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