IHostMAlloc::Alloc Method

 

Requests that the host allocate the specified amount of memory from the heap.

HRESULT Alloc (
    [in] SIZE_T  cbSize, 
    [in] EMemoryCriticalLevel dwCriticalLevel, 
    [out] void** ppMem
);

cbSize

[in] The size, in bytes, of the current memory allocation request.

dwCriticalLevel

[in] One of the EMemoryCriticalLevel values, indicating the impact of an allocation failure.

ppMem

[out] A pointer to the allocated memory, or null if the request could not be completed.

HRESULT

Description

S_OK

Alloc 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. When a method returns E_FAIL, the CLR is no longer usable within the process. Subsequent calls to hosting methods return HOST_E_CLRNOTAVAILABLE.

E_OUTOFMEMORY

Not enough memory was available to complete the allocation request.

The CLR gets an interface pointer to an IHostMalloc instance by calling the IHostMemoryManager::CreateMalloc method.

Requirements

Platforms: See .NET Framework System Requirements.

Header: MSCorEE.h

Library: Included as a resource in MSCorEE.dll

.NET Framework Versions: Available since 2.0

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