From 5d6ce1d2c3ae5af7bb32ae0ef9f8e44ba1024083 Mon Sep 17 00:00:00 2001
From: Abdelrahman <said.abdelrahman89@gmail.com>
Date: Sat, 7 Sep 2024 15:43:00 +0100
Subject: [PATCH] Restore libc Allocator implementation

---
 src/core/mem/libc/mem_libc.c | 49 ++++++++++++++++++++++++++++++++++++
 src/core/mem/libc/mem_libc.h | 15 +++++++++++
 2 files changed, 64 insertions(+)
 create mode 100644 src/core/mem/libc/mem_libc.c
 create mode 100644 src/core/mem/libc/mem_libc.h

diff --git a/src/core/mem/libc/mem_libc.c b/src/core/mem/libc/mem_libc.c
new file mode 100644
index 0000000..ad793d4
--- /dev/null
+++ b/src/core/mem/libc/mem_libc.c
@@ -0,0 +1,49 @@
+#include "mem_libc.h"
+#include "aliases.h"
+#include "mem_allocator.h"
+#include <stdlib.h>
+#include <string.h>
+
+internal inline void *mem_libc_alloc(u64 size, void *alloc_obj);
+internal inline void *mem_libc_alloc_aligned(u64 size, u64 alignment,
+                                             void *alloc_obj);
+internal inline void *mem_libc_realloc(void *ptr, u64 size, void *alloc_obj);
+internal inline void mem_libc_free(void **ptr, void *alloc_obj);
+
+Allocator wapp_mem_libc_allocator(void) {
+  return (Allocator){
+      .obj = NULL,
+      .alloc = mem_libc_alloc,
+      .alloc_aligned = mem_libc_alloc_aligned,
+      .realloc = mem_libc_realloc,
+      .realloc_aligned = NULL,
+      .free = mem_libc_free,
+  };
+}
+
+internal inline void *mem_libc_alloc(u64 size, void *alloc_obj) {
+  return calloc(1, size);
+}
+
+internal inline void *mem_libc_alloc_aligned(u64 size, u64 alignment,
+                                             void *alloc_obj) {
+  void *output = aligned_alloc(alignment, size);
+  if (output) {
+    memset(output, 0, size);
+  }
+
+  return output;
+}
+
+internal inline void *mem_libc_realloc(void *ptr, u64 size, void *alloc_obj) {
+  return realloc(ptr, size);
+}
+
+internal inline void mem_libc_free(void **ptr, void *alloc_obj) {
+  if (!ptr || !(*ptr)) {
+    return;
+  }
+
+  free(*ptr);
+  *ptr = NULL;
+}
diff --git a/src/core/mem/libc/mem_libc.h b/src/core/mem/libc/mem_libc.h
new file mode 100644
index 0000000..608821c
--- /dev/null
+++ b/src/core/mem/libc/mem_libc.h
@@ -0,0 +1,15 @@
+#ifndef MEM_LIBC_H
+#define MEM_LIBC_H
+
+#include "mem_allocator.h"
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
+Allocator wapp_mem_libc_allocator(void);
+
+#ifdef __cplusplus
+}
+#endif // __cplusplus
+
+#endif // !MEM_LIBC_H