From f2c51bc81d2aa618b29ddbeaae5ac1c5308821f0 Mon Sep 17 00:00:00 2001
From: Alex Auvolat <alex.auvolat@ens.fr>
Date: Mon, 9 Feb 2015 17:39:41 +0100
Subject: Reorganize all.

---
 src/common/include/slab_alloc.h | 45 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 src/common/include/slab_alloc.h

(limited to 'src/common/include/slab_alloc.h')

diff --git a/src/common/include/slab_alloc.h b/src/common/include/slab_alloc.h
new file mode 100644
index 0000000..c8d5d6c
--- /dev/null
+++ b/src/common/include/slab_alloc.h
@@ -0,0 +1,45 @@
+#pragma once
+
+// Self-contained piece of library : a slab allocator...
+// Depends on page_alloc_fun_t and page_free_fun_t : a couple of functions
+// that can allocate/free multiples of one page at a time
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+
+
+#if defined(__linux__)
+//redefine necessary stuff
+#include <assert.h> 		// standard linux assert.h
+#define ASSERT assert
+#include <stdio.h> 
+#define dbg_printf printf
+#else
+#include <debug.h>
+#endif
+
+#define PAGE_SIZE 0x1000
+
+// expected format for the array of slab_type_t given to slab_create :
+// an array of slab_type descriptors, with last descriptor full of zeroes
+// and with obj_size increasing (strictly) in the array
+typedef struct slab_type {
+	const char *descr;
+	size_t obj_size;
+	size_t pages_per_cache;
+} slab_type_t;
+
+struct mem_allocator;
+typedef struct mem_allocator mem_allocator_t;
+
+typedef void* (*page_alloc_fun_t)(size_t bytes);
+typedef void (*page_free_fun_t)(void* ptr);
+
+mem_allocator_t* create_slab_allocator(const slab_type_t *types, page_alloc_fun_t af, page_free_fun_t ff);
+void destroy_slab_allocator(mem_allocator_t*);
+
+void* slab_alloc(mem_allocator_t* a, size_t sz);
+void slab_free(mem_allocator_t* a, void* ptr);
+
+/* vim: set ts=4 sw=4 tw=0 noet :*/
-- 
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