Template Function thrust::free¶
Defined in File memory.h
Function Documentation¶
-
template<typename DerivedPolicy, typename Pointer>__host__ __device__ void thrust::free(const thrust::detail::execution_policy_base< DerivedPolicy > & system, Pointer ptr)
free
deallocates the storage previously allocated bythrust::malloc
.The following code snippet demonstrates how to use
free
to deallocate a range of memory previously allocated withthrust::malloc
.- Pre
ptr
shall have been returned by a previous call tothrust::malloc(system, n)
orthrust::malloc<T>(system, n)
for some typeT
.- Parameters
system
: The Thrust system with which the storage is associated.ptr
: A pointer previously returned bythrust::malloc
. Ifptr
is null,free
does nothing.
- Template Parameters
DerivedPolicy
: The name of the derived execution policy.
#include <thrust/memory.h> ... // allocate storage for 100 ints with thrust::malloc const int N = 100; thrust::device_system_tag device_sys; thrust::pointer<int,thrust::device_system_tag> ptr = thrust::malloc<int>(device_sys, N); // mainpulate memory ... // deallocate ptr with thrust::free thrust::free(device_sys, ptr);