greenplumn CErrorContext 代码
文件路径：/src/backend/gporca/libgpos/include/gpos/error/CErrorContext.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2008 - 2010 Greenplum, Inc.
/ Copyright (C) 2011 EMC Corp.
/
/ @filename:
/ CErrorContext.h
/
/ @doc:
/ Error context to record error message, stack, etc.
/---------------------------------------------------------------------------
#ifndef GPOS_CErrorContext_H
#define GPOS_CErrorContext_H
#include "gpos/common/CStackDescriptor.h"
#include "gpos/error/CException.h"
#include "gpos/error/CMiniDumper.h"
#include "gpos/error/CSerializable.h"
#include "gpos/error/IErrorContext.h"
#include "gpos/io/ioutils.h"
#include "gpos/string/CWStringStatic.h"
#define GPOS_ERROR_MESSAGE_BUFFER_SIZE (4 * 1024)
namespace gpos
{
/---------------------------------------------------------------------------
/ @class:
/ CErrorContext
/
/ @doc:
/ Context object, owned by Task
/
/---------------------------------------------------------------------------
class CErrorContext : public IErrorContext
{
private:
/ copy of original exception
CException m_exception;
/ exception severity
ULONG m_severity{CException::ExsevError};
/ flag to indicate if handled yet
BOOL m_pending{false};
/ flag to indicate if handled yet
BOOL m_rethrown{false};
/ flag to indicate that we are currently serializing this.
BOOL m_serializing{false};
/ error message buffer
WCHAR m_error_msg[GPOS_ERROR_MESSAGE_BUFFER_SIZE];
/ system error message buffer
CHAR m_system_error_msg[GPOS_ERROR_MESSAGE_BUFFER_SIZE];
/ string with static buffer allocation
CWStringStatic m_static_buffer;
/ stack descriptor to store error stack info
CStackDescriptor m_stack_descriptor;
/ list of objects to serialize on exception
CList<CSerializable> m_serializable_objects_list;
/ minidump handler
CMiniDumper *m_mini_dumper_handle;
public:
CErrorContext(const CErrorContext &) = delete;
/ ctor
explicit CErrorContext(CMiniDumper *mini_dumper_handle = nullptr);
/ dtor
~CErrorContext() override;
/ reset context, clear out handled error
void Reset() override;
/ record error context
void Record(CException &exc, VA_LIST) override;
/ accessors
CException
GetException() const override
{
return m_exception;
}
const WCHAR *
GetErrorMsg() const override
{
return m_error_msg;
}
CStackDescriptor *
GetStackDescriptor()
{
return &m_stack_descriptor;
}
CMiniDumper *
GetMiniDumper()
{
return m_mini_dumper_handle;
}
/ register minidump handler
void
Register(CMiniDumper *mini_dumper_handle)
{
GPOS_ASSERT(nullptr == m_mini_dumper_handle);
m_mini_dumper_handle = mini_dumper_handle;
}
/ unregister minidump handler
void
Unregister(
#ifdef GPOS_DEBUG
CMiniDumper *mini_dumper_handle
#endif / GPOS_DEBUG
)
{
GPOS_ASSERT(mini_dumper_handle == m_mini_dumper_handle);
m_mini_dumper_handle = nullptr;
}
/ register object to serialize
void
Register(CSerializable *serializable_obj)
{
m_serializable_objects_list.Append(serializable_obj);
}
/ unregister object to serialize
void
Unregister(CSerializable *serializable_obj)
{
m_serializable_objects_list.Remove(serializable_obj);
}
/ serialize registered objects
void Serialize();
/ copy necessary info for error propagation
void CopyPropErrCtxt(const IErrorContext *perrctxt) override;
/ severity accessor
ULONG
GetSeverity() const override
{
return m_severity;
}
/ set severity
void
SetSev(ULONG severity) override
{
m_severity = severity;
}
/ print error stack trace
void
AppendStackTrace() override
{
m_static_buffer.AppendFormat(GPOS_WSZ_LIT("\nStack trace:\n"));
m_stack_descriptor.AppendTrace(&m_static_buffer);
}
/ print errno message
void AppendErrnoMsg() override;
BOOL
IsPending() const override
{
return m_pending;
}
BOOL
IsRethrown() const override
{
return m_rethrown;
}
void
SetRethrow() override
{
m_rethrown = true;
}
}; / class CErrorContext
} / namespace gpos
#endif / !GPOS_CErrorContext_H
/ EOF
相关信息
相关文章
greenplumn CAutoExceptionStack 源码