Add malloc monitoring to get a sense of RAM use

[yaffs2.git] / direct / test-framework / yaffs_osglue.c

diff --git a/direct/test-framework/yaffs_osglue.c b/direct/test-framework/yaffs_osglue.c
index 6f0afabd054435a95d5903505aad489546d91268..2cc18bbdcb6bdec25eafef419df5caac894ed42a 100644 (file)
--- a/direct/test-framework/yaffs_osglue.c
+++ b/direct/test-framework/yaffs_osglue.c
@@ -1,8 +1,7 @@
 /*
  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2011 Aleph One Ltd.
- *   for Toby Churchill Ltd and Brightstar Engineering
+ * Copyright (C) 2002-2018 Aleph One Ltd.
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
  *
@@ -166,6 +165,48 @@ u32 yaffsfs_CurrentTime(void)
  * Functions to allocate and free memory.
  */
 
+
+static unsigned malloc_high_water;
+static unsigned malloc_currently_allocated;
+
+#ifdef CONFIG_YAFFS_MONITOR_MALLOC
+
+#include <malloc.h>
+static void yaffsfs_malloc_add(void *ptr)
+{
+       unsigned this_size = malloc_usable_size(ptr);
+       malloc_currently_allocated += this_size;
+
+       if (malloc_currently_allocated > malloc_high_water)
+               malloc_high_water = malloc_currently_allocated;
+}
+
+static void yaffsfs_malloc_remove(void *ptr)
+{
+       unsigned this_size = malloc_usable_size(ptr);
+       malloc_currently_allocated -= this_size;
+}
+#else
+static void yaffsfs_malloc_add(void *ptr)
+{
+       (void)ptr;
+}
+
+static void yaffsfs_malloc_remove(void *ptr)
+{
+       (void)ptr;
+}
+#endif
+
+void yaffsfs_get_malloc_values(unsigned *current, unsigned *high_water)
+{
+       if (current)
+               *current = malloc_currently_allocated;
+       if(high_water)
+               *high_water = malloc_high_water;
+}
+
+
 #ifdef CONFIG_YAFFS_TEST_MALLOC
 
 static int yaffs_kill_alloc = 0;
@@ -183,6 +224,7 @@ void *yaffsfs_malloc(size_t size)
        this = malloc(size);
        if(this)
                total_malloced += size;
+       yaffsfs_malloc_add(this);
        return this;
 }
 
@@ -190,13 +232,19 @@ void *yaffsfs_malloc(size_t size)
 
 void *yaffsfs_malloc(size_t size)
 {
-       return malloc(size);
+       void *this = malloc(size);
+       yaffsfs_malloc_add(this);
+       return this;
 }
 
 #endif
 
+
+
+
 void yaffsfs_free(void *ptr)
 {
+       yaffsfs_malloc_remove(ptr);
        free(ptr);
 }