From 8849d801b9d3767390e3e1ed6b562db738ac1bcb Mon Sep 17 00:00:00 2001
From: Thomas Vanbesien <tvanbesi@proton.me>
Date: Fri, 27 Feb 2026 11:04:07 +0100
Subject: Add show_alloc_mem and test_show, rename test to test_preload

Implement show_alloc_mem() to print all zones and allocations
by ascending address. Add test_show binary that links directly
against libft_malloc.so to exercise it.
---
 src/show_alloc_mem.c | 87 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 src/show_alloc_mem.c

(limited to 'src/show_alloc_mem.c')

diff --git a/src/show_alloc_mem.c b/src/show_alloc_mem.c
new file mode 100644
index 0000000..6fd5e37
--- /dev/null
+++ b/src/show_alloc_mem.c
@@ -0,0 +1,87 @@
+/**
+ * @file   show_alloc_mem.c
+ * @brief  Print every allocated zone and block to stdout.
+ */
+
+#include "libft.h"
+#include "malloc.h"
+#include "malloc_internal.h"
+
+static void
+_s_put_ptr (void *ptr)
+{
+  const char hex[] = "0123456789abcdef";
+  char buf[20];
+  unsigned long value;
+  int i;
+
+  value = (unsigned long)ptr;
+  i = (int)sizeof (buf);
+  while (value)
+    {
+      buf[--i] = hex[value % 16];
+      value /= 16;
+    }
+  buf[--i] = 'x';
+  buf[--i] = '0';
+  ft_putstr_fd (buf + i, 1);
+}
+
+static void
+_s_put_size (size_t n)
+{
+  if (n >= 10)
+    _s_put_size (n / 10);
+  ft_putchar_fd ('0' + (n % 10), 1);
+}
+
+static size_t
+_s_print_zone (char *label, t_zone *zone)
+{
+  t_chunk *chunk;
+  void *start;
+  void *end;
+  size_t total;
+
+  total = 0;
+  while (zone)
+    {
+      ft_putstr_fd (label, 1);
+      ft_putstr_fd (" : ", 1);
+      _s_put_ptr (zone);
+      ft_putchar_fd ('\n', 1);
+      chunk = (t_chunk *)((char *)zone + ALIGN (sizeof (t_zone)));
+      while (chunk)
+        {
+          if (!chunk->is_free)
+            {
+              start = (char *)chunk + ALIGN (sizeof (t_chunk));
+              end = (char *)start + chunk->size;
+              _s_put_ptr (start);
+              ft_putstr_fd (" - ", 1);
+              _s_put_ptr (end);
+              ft_putstr_fd (" : ", 1);
+              _s_put_size (chunk->size);
+              ft_putendl_fd (" bytes", 1);
+              total += chunk->size;
+            }
+          chunk = chunk->next;
+        }
+      zone = zone->next;
+    }
+  return (total);
+}
+
+void
+show_alloc_mem (void)
+{
+  size_t total;
+
+  total = 0;
+  total += _s_print_zone ("TINY", g_heap.tiny);
+  total += _s_print_zone ("SMALL", g_heap.small);
+  total += _s_print_zone ("LARGE", g_heap.large);
+  ft_putstr_fd ("Total : ", 1);
+  _s_put_size (total);
+  ft_putendl_fd (" bytes", 1);
+}
-- 
cgit v1.2.3