Added Initial Implementation of memory and allocation function

Signed-off-by: Marc Pervaz Boocha <mboocha@sudomsg.xyz>

On branch main
Your branch is up to date with 'origin/main'.

Changes to be committed:
      new file:   include/alloc.h
      new file:   include/calt.h
      new file:   include/mem.h
      new file:   include/meson.build
      new file:   meson.build
      new file:   meson_options.txt
      new file:   src/alloc/alloc.c
      new file:   src/alloc/calloc.c
      new file:   src/alloc/free.c
      new file:   src/alloc/malloc.c
      new file:   src/alloc/memdup.c
      new file:   src/alloc/meson.build
      new file:   src/alloc/realloc.c
      new file:   src/mem/memccpy.c
      new file:   src/mem/memchr.c
      new file:   src/mem/memcmp.c
      new file:   src/mem/memcpy.c
      new file:   src/mem/memhash.c
      new file:   src/mem/memlen.c
      new file:   src/mem/memmem.c
      new file:   src/mem/memmove.c
      new file:   src/mem/memrchr.c
      new file:   src/mem/memrev.c
      new file:   src/mem/memset.c
      new file:   src/mem/memswap.c
      new file:   src/mem/memzero.c
      new file:   src/mem/meson.build
      new file:   src/meson.build
      new file:   test/alloc/meson.build
      new file:   test/mem/memset.c
      new file:   test/mem/memzero.c
      new file:   test/mem/meson.build
      new file:   test/meson.build

1 files changed, 35 insertions, 0 deletions

diff --git a/include/alloc.h b/include/alloc.h
new file mode 100644
index 0000000..bc8c3d8
--- /dev/null
+++ b/include/alloc.h
@@ -0,0 +1,35 @@
+#pragma once
+#ifndef CALT_ALLOC_H
+#define CALT_ALLOC_H
+#include <stddef.h>
+
+struct calt_alloc {
+	void *(*malloc)(size_t);
+	void *(*calloc)(size_t);
+	void *(*realloc)(void *, size_t);
+	void (*free)(void *);
+};
+
+extern struct calt_alloc calt_get_alloc(void);
+extern void calt_use_custom_alloc(struct calt_alloc allocator);
+
+inline void *calt_malloc(size_t size) {
+	if (size) {
+		struct calt_alloc alloc = calt_get_alloc();
+		return alloc.malloc ? alloc.malloc(size) : NULL;
+	} else {
+		return NULL;
+	}
+}
+
+inline void calt_free(void *ptr) {
+	if (ptr) {
+		calt_get_alloc().free(ptr);
+	}
+}
+
+extern void *calt_calloc(size_t size);
+extern void *calt_realloc(void *ptr, size_t size);
+extern void *calt_memdup(void const *restrict src, size_t len);
+
+#endif