ICLRGCManager::Collect Method

Forces a garbage collection for the specified generation.


HRESULT Collect (  
    [in] LONG Generation  


[in] The generation to collect. A value of -1 forces a collection of all generations.

Return Value

HRESULT Description
S_OK Collect returned successfully.
HOST_E_CLRNOTAVAILABLE The common language runtime (CLR) has not been loaded into a process, or the CLR is in a state in which it cannot run managed code or process the call successfully.
HOST_E_TIMEOUT The call timed out.
HOST_E_NOT_OWNER The caller does not own the lock.
HOST_E_ABANDONED An event was canceled while a blocked thread or fiber was waiting on it.
E_FAIL An unknown catastrophic failure occurred. After a method returns E_FAIL, the CLR is no longer usable within the process. Subsequent calls to hosting methods return HOST_E_CLRNOTAVAILABLE.


The Collect method forces the CLR's garbage collector to perform a collection regardless of its current state.


Platforms: See System Requirements.

Header: MSCorEE.h

Library: Included as a resource in MSCorEE.dll

.NET Framework Versions: Available since 2.0

See Also

Automatic Memory Management
Garbage Collection
ICLRControl Interface
ICLRGCManager Interface
CLR Hosting Interfaces
Hosting Interfaces