Tidy up the sync dir, remove dead or mis-designed code in favour of OS primitives, switch rust_kernel to use a lock/signal pair and wait rather than spin.

1 files changed, 0 insertions, 56 deletions

diff --git a/src/rt/sync/interrupt_transparent_queue.cpp b/src/rt/sync/interrupt_transparent_queue.cpp
deleted file mode 100644
index 064b25f1..00000000
--- a/src/rt/sync/interrupt_transparent_queue.cpp
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * Interrupt transparent queue, Schoen et. al, "On Interrupt-Transparent
- * Synchronization in an Embedded Object-Oriented Operating System", 2000.
- * enqueue() is allowed to interrupt enqueue() and dequeue(), however,
- * dequeue() is not allowed to interrupt itself.
- */
-
-#include "../globals.h"
-#include "interrupt_transparent_queue.h"
-
-interrupt_transparent_queue_node::interrupt_transparent_queue_node() :
-    next(NULL) {
-
-}
-
-interrupt_transparent_queue::interrupt_transparent_queue() : _tail(this) {
-
-}
-
-void
-interrupt_transparent_queue::enqueue(interrupt_transparent_queue_node *item) {
-    lock.lock();
-    item->next = (interrupt_transparent_queue_node *) NULL;
-    interrupt_transparent_queue_node *last = _tail;
-    _tail = item;
-    while (last->next) {
-        last = last->next;
-    }
-    last->next = item;
-    lock.unlock();
-}
-
-interrupt_transparent_queue_node *
-interrupt_transparent_queue::dequeue() {
-    lock.lock();
-    interrupt_transparent_queue_node *item = next;
-    if (item && !(next = item->next)) {
-        _tail = (interrupt_transparent_queue_node *) this;
-        if (item->next) {
-            interrupt_transparent_queue_node *lost = item->next;
-            interrupt_transparent_queue_node *help;
-            do {
-                help = lost->next;
-                enqueue(lost);
-            } while ((lost = help) !=
-                     (interrupt_transparent_queue_node *) NULL);
-        }
-    }
-    lock.unlock();
-    return item;
-}
-
-bool
-interrupt_transparent_queue::is_empty() {
-    return next == NULL;
-}