folly::SingletonVault::ScopedExpunger Struct Reference

#include <Singleton.h>

Public Member Functions
	ScopedExpunger (SingletonVault *v)
	~ScopedExpunger ()
void	expunge ()

Public Attributes
SingletonVault *	vault

Detailed Description

Clears all singletons in the given vault at ctor and dtor times. Useful for unit-tests that need to clear the world.

This need can arise when a unit-test needs to swap out an object used by a singleton for a test-double, but the singleton needing its dependency to be swapped has a type or a tag local to some other translation unit and unavailable in the current translation unit.

Other, better approaches to this need are "plz 2 refactor" ....

Definition at line 393 of file Singleton.h.

Constructor & Destructor Documentation

folly::SingletonVault::ScopedExpunger::ScopedExpunger ( SingletonVault *  v )

inlineexplicit

Definition at line 395 of file Singleton.h.

                                               : vault(v) {
      expunge();
    }

folly::SingletonVault::ScopedExpunger::~ScopedExpunger ( )

inline

Definition at line 398 of file Singleton.h.

                      {
      expunge();
    }

Member Function Documentation

void folly::SingletonVault::ScopedExpunger::expunge ( )

inline

Definition at line 401 of file Singleton.h.

References folly::SingletonVault::destroyInstances(), and folly::SingletonVault::reenableInstances().

                   {
      vault->destroyInstances();
      vault->reenableInstances();
    }

Member Data Documentation

SingletonVault* folly::SingletonVault::ScopedExpunger::vault

Definition at line 394 of file Singleton.h.

---

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

• proxygen/folly/folly/Singleton.h