Lots of changes around memory managment in the Runtime. Added memory regions and fixed race caused by calling rust_srv::malloc() from multiple threads when sending messages.

1 files changed, 37 insertions, 0 deletions

diff --git a/src/rt/memory_region.h b/src/rt/memory_region.h
new file mode 100644
index 00000000..3411d867
--- /dev/null
+++ b/src/rt/memory_region.h
@@ -0,0 +1,37 @@
+/*
+ * The Rust runtime uses memory regions to provide a primitive level of
+ * memory management and isolation between tasks, and domains.
+ *
+ * TODO: Implement a custom lock-free malloc / free instead of relying solely
+ *       on the standard malloc / free.
+ */
+
+#ifndef MEMORY_REGION_H
+#define MEMORY_REGION_H
+
+#include "sync/spin_lock.h"
+
+class rust_srv;
+
+class memory_region {
+private:
+    rust_srv *_srv;
+    memory_region *_parent;
+    size_t _live_allocations;
+    array_list<void *> _allocation_list;
+    const bool _synchronized;
+    spin_lock _lock;
+public:
+    enum memory_region_type {
+        LOCAL = 0x1, SYNCHRONIZED = 0x2
+    };
+    memory_region(rust_srv *srv, bool synchronized);
+    memory_region(memory_region *parent);
+    void *malloc(size_t size);
+    void *calloc(size_t size);
+    void *realloc(void *mem, size_t size);
+    void free(void *mem);
+    virtual ~memory_region();
+};
+
+#endif /* MEMORY_REGION_H */