From bbfe603e5ae42317a2b67d713d00882bea341c88 Mon Sep 17 00:00:00 2001
From: Jim Flynn <jim.flynn@arm.com>
Date: Mon, 20 Jul 2020 16:57:44 +0100
Subject: IVGCVSW-5166 Pull out the common and server side code into standalone
 libraries

Change-Id: I180f84c493a9b2be4b93b25d312ebdd9e71b1735
Signed-off-by: Jim Flynn <jim.flynn@arm.com>
---
 profiling/common/include/Logging.hpp | 182 +++++++++++++++++++++++++++++++++++
 1 file changed, 182 insertions(+)
 create mode 100644 profiling/common/include/Logging.hpp

(limited to 'profiling/common/include/Logging.hpp')

diff --git a/profiling/common/include/Logging.hpp b/profiling/common/include/Logging.hpp
new file mode 100644
index 0000000000..a31c2aaa7b
--- /dev/null
+++ b/profiling/common/include/Logging.hpp
@@ -0,0 +1,182 @@
+//
+// 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
+{
+
+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";
+    }
+}
+
+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& 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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