From 2052814783c6f8cacfa997ef5b29fa50b10ef068 Mon Sep 17 00:00:00 2001
From: overflowerror <mail@overflowerror.com>
Date: Fri, 10 Mar 2017 23:17:53 +0100
Subject: [PATCH] memory management stuff

---
 memory/Makefile  | 38 ++++++++++++++++++++++++++++++++++++++
 memory/example.c | 20 ++++++++++++++++++++
 memory/memory.c  | 39 +++++++++++++++++++++++++++++++++++++++
 memory/memory.h  | 14 ++++++++++++++
 4 files changed, 111 insertions(+)
 create mode 100644 memory/Makefile
 create mode 100644 memory/example.c
 create mode 100644 memory/memory.c
 create mode 100644 memory/memory.h

diff --git a/memory/Makefile b/memory/Makefile
new file mode 100644
index 0000000..445d1e7
--- /dev/null
+++ b/memory/Makefile
@@ -0,0 +1,38 @@
+#
+# Makefile for crap-libs/memory
+#
+# Author: overflowerror
+#
+
+CC = gcc
+DEFS = -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -B "../try/" -B "../oop/"
+CFLAGS = -Wall -Wextra -g -std=c99 -pedantic -DENDEBUG $(DEFS) -fPIC
+LDFLAGS = $(DEFS)
+LIBFLAGS = -shared $(DEFS)
+
+.PHONY: all clean
+
+all: example libmemory.so
+
+%.o: %.c
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+example: example.o memory.o ../try/libtry.so ../oop/liboop.so
+	$(CC) $(LDFLAGS) -o $@ $^
+
+libmemory.so: memory.o ../try/libtry.so ../oop/liboop.so
+	$(CC) $(LIBFLAGS) -o $@ $^
+
+memory.o: memory.c memory.h
+example.o: example.c memory.h 
+
+../try/libtry.so:
+	cd ../try/ && $(MAKE) libtry.so
+
+../oop/liboop.so:
+	cd ../oop/ && $(MAKE) liboop.so
+
+clean:
+	rm -f *.o example memory.so
+	cd ../try/ && $(MAKE) clean
+	cd ../oop/ && $(MAKE) clean
diff --git a/memory/example.c b/memory/example.c
new file mode 100644
index 0000000..69ec6c5
--- /dev/null
+++ b/memory/example.c
@@ -0,0 +1,20 @@
+#include "memory.h"
+
+#include <stdio.h>
+
+int main(void) {
+
+	const char* str = "Hallo Welt";
+	
+	char* tmp = clone_string(str);
+
+	printf("%s\n", tmp);
+
+	free(tmp);
+
+	tmp = allocate((size_t) 1 << 63);
+
+	free(tmp);
+
+	return 0; 
+}
diff --git a/memory/memory.c b/memory/memory.c
new file mode 100644
index 0000000..0e3107e
--- /dev/null
+++ b/memory/memory.c
@@ -0,0 +1,39 @@
+#include "memory.h"
+#include "../try/try.h"
+#include "../try/exceptions/exceptions.h"
+
+#include <errno.h>
+#include <string.h>
+
+void allocate_sub(size_t size, void** ptr) { throws(exception_t);
+	*ptr = malloc(size);
+	if (*ptr == NULL) {
+		throw(new exception(strerror(errno)));
+	}
+}
+
+void* allocate(size_t size) { throws(exception_t);
+	void* ptr;
+	s_(allocate_sub(size, &ptr));
+	return ptr;
+}
+
+void reallocate_sub(size_t size, void** ptr, void* old) { throws(exception_t);
+	*ptr = realloc(old, size);
+	if (*ptr == NULL) {
+		throw(new exception(strerror(errno)));
+	}
+}
+
+void* reallocate(void* old, size_t size) { throws(exception_t);
+	void* ptr;
+	s_(reallocate_sub(size, &ptr, old));
+	return ptr;
+}
+
+void* clone(const void* org, size_t size) { throws(exception_t);
+	void* ptr;
+	trycall allocate_sub(size, &ptr);
+	memcpy(ptr, org, size);
+	return ptr;
+}
diff --git a/memory/memory.h b/memory/memory.h
new file mode 100644
index 0000000..fd65769
--- /dev/null
+++ b/memory/memory.h
@@ -0,0 +1,14 @@
+#ifndef MEMORY_H
+#define MEMORY_H
+
+#include <stdlib.h>
+#include <string.h>
+
+#define clone_string(s) clone((void*) s, strlen(s) + 1)
+#define clone_obj(obj, class) clone((void*) obj, sizeof(class))
+
+void* allocate(size_t);
+void* reallocate(void*, size_t);
+void* clone(const void*, size_t);
+
+#endif