mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-29 19:12:03 +00:00
b79ead9c84
* Replicate poco into base/poco/ * De-register poco submodule * Build poco from ClickHouse * Exclude poco from stylecheck * Exclude poco from whitespace check * Exclude poco from typo check * Remove x bit from sources/headers (the style check complained) * Exclude poco from duplicate include check * Fix fasttest * Remove contrib/poco-cmake/* * Simplify poco build descriptions * Remove poco stuff not used by ClickHouse * Glob poco sources * Exclude poco from clang-tidy
182 lines
4.3 KiB
C++
182 lines
4.3 KiB
C++
//
|
|
// NestedDiagnosticContext.h
|
|
//
|
|
// Library: Foundation
|
|
// Package: Core
|
|
// Module: NestedDiagnosticContext
|
|
//
|
|
// Definition of the NestedDiagnosticContext class.
|
|
//
|
|
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
|
|
// and Contributors.
|
|
//
|
|
// SPDX-License-Identifier: BSL-1.0
|
|
//
|
|
|
|
|
|
#ifndef Foundation_NestedDiagnosticContext_INCLUDED
|
|
#define Foundation_NestedDiagnosticContext_INCLUDED
|
|
|
|
|
|
#include "Poco/Foundation.h"
|
|
#include <vector>
|
|
#include <ostream>
|
|
|
|
|
|
namespace Poco {
|
|
|
|
|
|
class NDCScope;
|
|
|
|
|
|
class Foundation_API NestedDiagnosticContext
|
|
/// This class implements a Nested Diagnostic Context (NDC),
|
|
/// as described in Neil Harrison's article "Patterns for Logging
|
|
/// Diagnostic Messages" in "Pattern Languages of Program Design 3"
|
|
/// (Addison-Wesley).
|
|
///
|
|
/// A NDC maintains a stack of context information, consisting of
|
|
/// an informational string (e.g., a method name), as well as an
|
|
/// optional source code line number and file name.
|
|
/// NDCs are especially useful for tagging log messages with
|
|
/// context information which is very helpful in a multithreaded
|
|
/// server scenario.
|
|
/// Every thread has its own private NDC, which is automatically
|
|
/// created when needed and destroyed when the thread terminates.
|
|
///
|
|
/// The NDCScope (or NDC::Scope) class can be used to automatically
|
|
/// push information at the beginning of a scope, and to pop it
|
|
/// at the end.
|
|
/// The poco_ndc(info) macro augments the information with a
|
|
/// source code line number and file name.
|
|
{
|
|
public:
|
|
typedef NDCScope Scope;
|
|
|
|
NestedDiagnosticContext();
|
|
/// Creates the NestedDiagnosticContext.
|
|
|
|
NestedDiagnosticContext(const NestedDiagnosticContext& ctx);
|
|
/// Copy constructor.
|
|
|
|
~NestedDiagnosticContext();
|
|
/// Destroys the NestedDiagnosticContext.
|
|
|
|
NestedDiagnosticContext& operator = (const NestedDiagnosticContext& ctx);
|
|
/// Assignment operator.
|
|
|
|
void push(const std::string& info);
|
|
/// Pushes a context (without line number and filename) onto the stack.
|
|
|
|
void push(const std::string& info, int line, const char* filename);
|
|
/// Pushes a context (including line number and filename)
|
|
/// onto the stack. Filename must be a static string, such as the
|
|
/// one produced by the __FILE__ preprocessor macro.
|
|
|
|
void pop();
|
|
/// Pops the top-most context off the stack.
|
|
|
|
int depth() const;
|
|
/// Returns the depth (number of contexts) of the stack.
|
|
|
|
std::string toString() const;
|
|
/// Returns the stack as a string with entries
|
|
/// delimited by colons. The string does not contain
|
|
/// line numbers and filenames.
|
|
|
|
void dump(std::ostream& ostr) const;
|
|
/// Dumps the stack (including line number and filenames)
|
|
/// to the given stream. The entries are delimited by
|
|
/// a newline.
|
|
|
|
void dump(std::ostream& ostr, const std::string& delimiter) const;
|
|
/// Dumps the stack (including line number and filenames)
|
|
/// to the given stream.
|
|
|
|
void clear();
|
|
/// Clears the NDC stack.
|
|
|
|
static NestedDiagnosticContext& current();
|
|
/// Returns the current thread's NDC.
|
|
|
|
private:
|
|
struct Context
|
|
{
|
|
std::string info;
|
|
const char* file;
|
|
int line;
|
|
};
|
|
typedef std::vector<Context> Stack;
|
|
|
|
Stack _stack;
|
|
};
|
|
|
|
|
|
typedef NestedDiagnosticContext NDC;
|
|
|
|
|
|
class Foundation_API NDCScope
|
|
/// This class can be used to automatically push a context onto
|
|
/// the NDC stack at the beginning of a scope, and to pop
|
|
/// the context at the end of the scope.
|
|
{
|
|
public:
|
|
NDCScope(const std::string& info);
|
|
/// Pushes a context on the stack.
|
|
|
|
NDCScope(const std::string& info, int line, const char* filename);
|
|
/// Pushes a context on the stack.
|
|
|
|
~NDCScope();
|
|
/// Pops the top-most context off the stack.
|
|
};
|
|
|
|
|
|
//
|
|
// inlines
|
|
//
|
|
inline NDCScope::NDCScope(const std::string& info)
|
|
{
|
|
NestedDiagnosticContext::current().push(info);
|
|
}
|
|
|
|
|
|
inline NDCScope::NDCScope(const std::string& info, int line, const char* filename)
|
|
{
|
|
NestedDiagnosticContext::current().push(info, line, filename);
|
|
}
|
|
|
|
|
|
inline NDCScope::~NDCScope()
|
|
{
|
|
try
|
|
{
|
|
NestedDiagnosticContext::current().pop();
|
|
}
|
|
catch (...)
|
|
{
|
|
poco_unexpected();
|
|
}
|
|
}
|
|
|
|
|
|
//
|
|
// helper macros
|
|
//
|
|
#define poco_ndc(func) \
|
|
Poco::NDCScope _theNdcScope(#func, __LINE__, __FILE__)
|
|
|
|
|
|
#if defined(_DEBUG)
|
|
#define poco_ndc_dbg(func) \
|
|
Poco::NDCScope _theNdcScope(#func, __LINE__, __FILE__)
|
|
#else
|
|
#define poco_ndc_dbg(func)
|
|
#endif
|
|
|
|
|
|
} // namespace Poco
|
|
|
|
|
|
#endif // Foundation_NestedDiagnosticContext_INCLUDED
|