errno_scope Class Reference
[Error Library]

#include <stlsoft/error/errno_scope.hpp>

List of all members.

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Detailed Description

A scoping class that scopes the thread's last error.

  DWORD   err = errno;
  { stlsoft::errno_scope  scope; // Scope the error while we change it

    // Some code that changes (or may change) the last error
    . . .

    errno = ENOMEM; // ... we just do this for pedagogical purposes

  } // End of scope - error value replaced to former value

  assert(errno == err);

Public Types
typedef errno_scope	class_type
Public Member Functions
Operations
	errno_scope () throw ()
	Remembers the current value of errno.
	errno_scope (int errno_) throw ()
	Remembers the given value as the value of errno.
	~errno_scope () throw ()
	Replaces the remembered value of errno.
Operations
	operator int () const
	The remembered value of errno.

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Constructor & Destructor Documentation

errno_scope

(

)

throw () [inline]

Remembers the current value of errno.

errno_scope

(

int

errno_

)

throw () [inline, explicit]

Remembers the given value as the value of errno.

~errno_scope

(

)

throw () [inline]

Replaces the remembered value of errno.

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Member Function Documentation

operator int

(

)

const [inline]

The remembered value of errno.

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The documentation for this class was generated from the following file:

• stlsoft/error/errno_scope.hpp