Imported gcc-4.4.3

[msp430-gcc.git] / mpfr / tests / memory.c

diff --git a/mpfr/tests/memory.c b/mpfr/tests/memory.c
new file mode 100644 (file)
index 0000000..bd13bde
--- /dev/null
+++ b/mpfr/tests/memory.c
@@ -0,0 +1,193 @@
+/* Memory allocation used during tests.
+
+Copyright 2001, 2002, 2003, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+Contributed by the Arenaire and Cacao projects, INRIA.
+
+This file is part of the GNU MPFR Library.
+
+The GNU MPFR Library is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or (at your
+option) any later version.
+
+The GNU MPFR Library is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the GNU MPFR Library; see the file COPYING.LIB.  If not, write to
+the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+MA 02110-1301, USA. */
+
+/* Note: this file comes from GMP's tests/memory.c */
+
+#include <stdio.h>
+#include <stdlib.h>  /* for abort */
+#include <limits.h>
+
+#include "mpfr-test.h"
+
+/* Each block allocated is a separate malloc, for the benefit of a redzoning
+   malloc debugger during development or when bug hunting.
+
+   Sizes passed when reallocating or freeing are checked (the default
+   routines don't care about these).
+
+   Memory leaks are checked by requiring that all blocks have been freed
+   when tests_memory_end() is called.  Test programs must be sure to have
+   "clear"s for all temporary variables used.  */
+
+struct header {
+  void           *ptr;
+  size_t         size;
+  struct header  *next;
+};
+
+static struct header  *tests_memory_list;
+
+/* Return a pointer to a pointer to the found block (so it can be updated
+   when unlinking). */
+static struct header **
+tests_memory_find (void *ptr)
+{
+  struct header  **hp;
+
+  for (hp = &tests_memory_list; *hp != NULL; hp = &((*hp)->next))
+    if ((*hp)->ptr == ptr)
+      return hp;
+
+  return NULL;
+}
+
+/*
+static int
+tests_memory_valid (void *ptr)
+{
+  return (tests_memory_find (ptr) != NULL);
+}
+*/
+
+static void *
+tests_allocate (size_t size)
+{
+  struct header  *h;
+
+  if (size == 0)
+    {
+      printf ("tests_allocate(): attempt to allocate 0 bytes\n");
+      abort ();
+    }
+
+  h = (struct header *) __gmp_default_allocate (sizeof (*h));
+  h->next = tests_memory_list;
+  tests_memory_list = h;
+
+  h->size = size;
+  h->ptr = __gmp_default_allocate (size);
+  return h->ptr;
+}
+
+static void *
+tests_reallocate (void *ptr, size_t old_size, size_t new_size)
+{
+  struct header  **hp, *h;
+
+  if (new_size == 0)
+    {
+      printf ("tests_reallocate(): attempt to reallocate 0x%lX to 0 bytes\n",
+              (unsigned long) ptr);
+      abort ();
+    }
+
+  hp = tests_memory_find (ptr);
+  if (hp == NULL)
+    {
+      printf ("tests_reallocate(): attempt to reallocate bad pointer 0x%lX\n",
+              (unsigned long) ptr);
+      abort ();
+    }
+  h = *hp;
+
+  if (h->size != old_size)
+    {
+      /* Note: we should use the standard %zu to print sizes, but
+         this is not supported by old C implementations. */
+      printf ("tests_reallocate(): bad old size %lu, should be %lu\n",
+              (unsigned long) old_size, (unsigned long) h->size);
+      abort ();
+    }
+
+  h->size = new_size;
+  h->ptr = __gmp_default_reallocate (ptr, old_size, new_size);
+  return h->ptr;
+}
+
+static struct header **
+tests_free_find (void *ptr)
+{
+  struct header  **hp = tests_memory_find (ptr);
+  if (hp == NULL)
+    {
+      printf ("tests_free(): attempt to free bad pointer 0x%lX\n",
+              (unsigned long) ptr);
+      abort ();
+    }
+  return hp;
+}
+
+static void
+tests_free_nosize (void *ptr)
+{
+  struct header  **hp = tests_free_find (ptr);
+  struct header  *h = *hp;
+
+  *hp = h->next;  /* unlink */
+
+  __gmp_default_free (ptr, h->size);
+  __gmp_default_free (h, sizeof (*h));
+}
+
+static void
+tests_free (void *ptr, size_t size)
+{
+  struct header  **hp = tests_free_find (ptr);
+  struct header  *h = *hp;
+
+  if (h->size != size)
+    {
+      /* Note: we should use the standard %zu to print sizes, but
+         this is not supported by old C implementations. */
+      printf ("tests_free(): bad size %lu, should be %lu\n",
+              (unsigned long) size, (unsigned long) h->size);
+      abort ();
+    }
+
+  tests_free_nosize (ptr);
+}
+
+void
+tests_memory_start (void)
+{
+  tests_memory_list = NULL;
+  mp_set_memory_functions (tests_allocate, tests_reallocate, tests_free);
+}
+
+void
+tests_memory_end (void)
+{
+  if (tests_memory_list != NULL)
+    {
+      struct header  *h;
+      unsigned  count;
+
+      printf ("tests_memory_end(): not all memory freed\n");
+
+      count = 0;
+      for (h = tests_memory_list; h != NULL; h = h->next)
+        count++;
+
+      printf ("    %u blocks remaining\n", count);
+      abort ();
+    }
+}