saving current changes

docs/EuroSys/Paper/drawio/jemalloc_malloc_pseudo_code

@@ -0,0 +1,72 @@
+static void *
+os_pages_map(void *addr, size_t size, size_t alignment, bool *commit) {
+	assert(ALIGNMENT_ADDR2BASE(addr, os_page) == (vaddr_t)addr);
+	assert(ALIGNMENT_CEILING(size, os_page) == size);
+	assert(size != 0);
+	/* Non-NULL addresses don't work in CheriABI */
+	if (addr != NULL)
+		return (NULL);
+
+	if (os_overcommits) {
+		*commit = true;
+	}
+
+	void *ret;
+
+		ret = MALLOCCHERI(size);
+	
+	assert(ret != NULL);
+
+	if (addr != NULL && ret != addr) {
+		/*
+		 * We succeeded in mapping memory, but not in the right place.
+		 */
+		os_pages_unmap(ret, size);
+		ret = NULL;
+	}
+}
+
+
+void *
+pages_map(void *addr, size_t size, size_t alignment, bool *commit) {
+	assert(alignment >= PAGE);
+	assert(ALIGNMENT_ADDR2BASE(addr, alignment) == (vaddr_t)addr);
+
+		if (size & ~CHERI_REPRESENTABLE_ALIGNMENT_MASK(size))
+			abort();
+
+		...
+
+		void *ret = MALLOCCHERI(size); // replaced instead of mmap
+
+		return ret;
+	
+}
+
+static bool
+pages_commit_impl(void *addr, size_t size, bool commit) {
+	assert(PAGE_ADDR2BASE(addr) == addr);
+	assert(PAGE_CEILING(size) == size);
+	    
+        ...
+
+		void *result = MALLOCCHERI(size); // replaced instead of mmap
+		if (result != addr) {
+			/*
+			 * We succeeded in mapping memory, but not in the right
+			 * place.
+			 */
+			os_pages_unmap(result, size);
+			return true;
+		}
+		return false;
+	
+}
+
+static void
+os_pages_unmap(void *addr, size_t size) {
+	assert(ALIGNMENT_ADDR2BASE(addr, os_page) == (vaddr_t)addr);
+	assert(ALIGNMENT_CEILING(size, os_page) == size);
+    
+   FREECHERI(addr);
+}