diff --git a/zluda/src/impl/export_table.rs b/zluda/src/impl/export_table.rs
index bfae799..00df754 100644
--- a/zluda/src/impl/export_table.rs
+++ b/zluda/src/impl/export_table.rs
@@ -1,6 +1,5 @@
-use winapi::um::heapapi::{HeapAlloc, HeapFree};
-
 use crate::cuda::CUresult;
+use crate::r#impl::os;
 use crate::{
     cuda::{CUcontext, CUdevice, CUmodule, CUuuid},
     cuda_impl,
@@ -488,11 +487,8 @@ unsafe extern "system" fn heap_alloc(
         return CUresult::CUDA_ERROR_INVALID_VALUE;
     }
     let halloc = GlobalState::lock(|global_state| {
-        let halloc = HeapAlloc(
-            global_state.global_heap,
-            0,
-            mem::size_of::<HeapAllocRecord>(),
-        ) as *mut HeapAllocRecord;
+        let halloc = os::heap_alloc(global_state.global_heap, mem::size_of::<HeapAllocRecord>())
+            as *mut HeapAllocRecord;
         if halloc == ptr::null_mut() {
             return Err(CUresult::CUDA_ERROR_OUT_OF_MEMORY);
         }
@@ -520,7 +516,7 @@ unsafe extern "system" fn heap_free(halloc: *mut HeapAllocRecord, arg1: *mut usi
         *arg1 = (*halloc).arg2;
     }
     GlobalState::lock(|global_state| {
-        HeapFree(global_state.global_heap, 0, halloc as *mut _);
+        os::heap_free(global_state.global_heap, halloc as *mut _);
         ()
     })
     .encuda()
diff --git a/zluda/src/impl/mod.rs b/zluda/src/impl/mod.rs
index 48e9a24..55c047f 100644
--- a/zluda/src/impl/mod.rs
+++ b/zluda/src/impl/mod.rs
@@ -1,5 +1,3 @@
-use winapi::um::{heapapi::HeapCreate, winnt::HEAP_NO_SERIALIZE};
-
 use crate::{
     cuda::{CUctx_st, CUdevice, CUdeviceptr, CUfunc_st, CUmod_st, CUresult, CUstream_st},
     r#impl::device::Device,
@@ -22,6 +20,9 @@ pub mod export_table;
 pub mod function;
 pub mod memory;
 pub mod module;
+#[cfg_attr(windows, path = "os_win.rs")]
+#[cfg_attr(not(windows), path = "os_unix.rs")]
+pub(crate) mod os;
 pub mod stream;
 
 #[cfg(debug_assertions)]
@@ -304,7 +305,7 @@ pub fn init() -> Result<(), CUresult> {
         None => return Err(CUresult::CUDA_ERROR_UNKNOWN),
         Some(driver) => device::init(&driver)?,
     };
-    let global_heap = unsafe { HeapCreate(HEAP_NO_SERIALIZE, 0, 0) };
+    let global_heap = unsafe { os::heap_create() };
     if global_heap == ptr::null_mut() {
         return Err(CUresult::CUDA_ERROR_OUT_OF_MEMORY);
     }
diff --git a/zluda/src/impl/os_unix.rs b/zluda/src/impl/os_unix.rs
new file mode 100644
index 0000000..e11211d
--- /dev/null
+++ b/zluda/src/impl/os_unix.rs
@@ -0,0 +1,13 @@
+use std::ptr;
+
+unsafe fn heap_create() -> *mut c_void {
+    ptr::null_mut()
+}
+
+unsafe fn heap_alloc(heap: *mut c_void, bytes: usize) -> *mut c_void {
+    todo!()
+}
+
+unsafe fn heap_free(heap: *mut c_void, alloc: *mut c_void) {
+    todo!()
+}
diff --git a/zluda/src/impl/os_win.rs b/zluda/src/impl/os_win.rs
new file mode 100644
index 0000000..427920e
--- /dev/null
+++ b/zluda/src/impl/os_win.rs
@@ -0,0 +1,16 @@
+use std::ffi::c_void;
+
+use winapi::um::heapapi::{HeapAlloc, HeapFree};
+use winapi::um::{heapapi::HeapCreate, winnt::HEAP_NO_SERIALIZE};
+
+pub unsafe fn heap_create() -> *mut c_void {
+    HeapCreate(HEAP_NO_SERIALIZE, 0, 0)
+}
+
+pub unsafe fn heap_alloc(heap: *mut c_void, bytes: usize) -> *mut c_void {
+    HeapAlloc(heap, 0, bytes)
+}
+
+pub unsafe fn heap_free(heap: *mut c_void, alloc: *mut c_void) {
+    HeapFree(heap, 0, alloc);
+}