[][src]Function core::arch::nvptx::malloc

pub unsafe extern "C" fn malloc(size: usize) -> *mut c_void
🔬 This is a nightly-only experimental API. (stdsimd #48556)
This is supported on target_arch="nvptx" or target_arch="nvptx64" only.

Allocate memory dynamically from a fixed-size heap in global memory.

The CUDA in-kernel malloc() function allocates at least size bytes from the device heap and returns a pointer to the allocated memory or NULL if insufficient memory exists to fulfill the request.

The returned pointer is guaranteed to be aligned to a 16-byte boundary.

The memory allocated by a given CUDA thread via malloc() remains allocated for the lifetime of the CUDA context, or until it is explicitly released by a call to free(). It can be used by any other CUDA threads even from subsequent kernel launches.

Sources: Programming Guide, PTX Interoperability.