1 files changed, 62 insertions, 0 deletions
diff --git a/src/core/memory.c b/src/core/memory.c
new file mode 100644
index 0000000..f19803e
--- /dev/null
+++ b/src/core/memory.c
@@ -0,0 +1,62 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <engine/logging.h>
+
+#include <engine/memory.h>
+
+memory* memory_new(usize max_size) {
+  memory* m = malloc(sizeof(memory));
+  m->data = malloc(max_size);
+  m->size = max_size;
+  m->pos = 0;
+  m->free = max_size;
+
+  memset(m->data, 0, max_size);
+
+  return m;
+}
+
+/* Returns a pointer to the allocated data */
+void* memory_allocate(memory* mem, usize size) {
+  void* data = NULL;
+
+  if (mem->pos + size <= mem->size) {
+    data = (void*)((usize)mem->data + mem->pos);
+    mem->pos += size;
+    mem->free -= size;
+  } else {
+    ERROR("Trying to allocate %lu in a %lu sized memory block", size,
+          mem->size);
+    ERROR("No more room!");
+    exit(EXIT_FAILURE);
+  }
+
+  return data;
+}
+
+memory memory_init(void* data, usize size) {
+  memory m = {0};
+  m.data = data;
+  m.size = size;
+  m.free = 0;
+  return m;
+}
+
+void memory_free(memory* mem, usize size) {
+  if (size > mem->pos) {
+    perror("Freeing too much memory!");
+    exit(EXIT_FAILURE);
+  } else {
+    mem->pos -= size;
+    mem->free += size;
+  }
+}
+
+void memory_clear(memory* mem) {
+  mem->pos = 0;
+  mem->free = mem->size;
+  /* Reset the memory? */
+  memset(mem->data, 0, mem->size);
+}