Rewrite the exchange allocator to work without an active scheduler. #4457

1 files changed, 0 insertions, 75 deletions

diff --git a/src/rt/rust_upcall.cpp b/src/rt/rust_upcall.cpp
index ea396146755..008b470fede 100644
--- a/src/rt/rust_upcall.cpp
+++ b/src/rt/rust_upcall.cpp
@@ -141,81 +141,6 @@ struct s_trace_args {
 };
 
 /**********************************************************************
- * Allocate an object in the exchange heap
- */
-
-struct s_exchange_malloc_args {
-    rust_task *task;
-    uintptr_t retval;
-    type_desc *td;
-    uintptr_t size;
-};
-
-extern "C" CDECL void
-upcall_s_exchange_malloc(s_exchange_malloc_args *args) {
-    rust_task *task = args->task;
-    LOG_UPCALL_ENTRY(task);
-
-    size_t total_size = get_box_size(args->size, args->td->align);
-    void *p = task->kernel->malloc(total_size, "exchange malloc");
-
-    rust_opaque_box *header = static_cast<rust_opaque_box*>(p);
-    header->ref_count = -1; // This is not ref counted
-    header->td = args->td;
-    header->prev = 0;
-    header->next = 0;
-
-    LOG(task, mem, "exchange malloced %p of size %" PRIuPTR,
-        header, args->size);
-
-    args->retval = (uintptr_t)header;
-}
-
-extern "C" CDECL uintptr_t
-upcall_exchange_malloc(type_desc *td, uintptr_t size) {
-    rust_task *task = rust_get_current_task();
-    s_exchange_malloc_args args = {task, 0, td, size};
-    UPCALL_SWITCH_STACK(task, &args, upcall_s_exchange_malloc);
-    return args.retval;
-}
-
-// FIXME (#2861): Alias used by libcore/rt.rs to avoid naming conflicts with
-// autogenerated wrappers for upcall_exchange_malloc. Remove this when we
-// fully move away away from the C upcall path.
-extern "C" CDECL uintptr_t
-rust_upcall_exchange_malloc(type_desc *td, uintptr_t size) {
-    return upcall_exchange_malloc(td, size);
-}
-
-struct s_exchange_free_args {
-    rust_task *task;
-    void *ptr;
-};
-
-extern "C" CDECL void
-upcall_s_exchange_free(s_exchange_free_args *args) {
-    rust_task *task = args->task;
-    LOG_UPCALL_ENTRY(task);
-    LOG(task, mem, "exchange freed %p", args->ptr);
-    task->kernel->free(args->ptr);
-}
-
-extern "C" CDECL void
-upcall_exchange_free(void *ptr) {
-    rust_task *task = rust_get_current_task();
-    s_exchange_free_args args = {task,ptr};
-    UPCALL_SWITCH_STACK(task, &args, upcall_s_exchange_free);
-}
-
-// FIXME (#2861): Alias used by libcore/rt.rs to avoid naming conflicts with
-// autogenerated wrappers for upcall_exchange_free. Remove this when we fully
-// move away away from the C upcall path.
-extern "C" CDECL void
-rust_upcall_exchange_free(void *ptr) {
-    return upcall_exchange_free(ptr);
-}
-
-/**********************************************************************
  * Allocate an object in the task-local heap.
  */