/* Simple garbage collection for the GNU compiler.
- Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
Free Software Foundation, Inc.
This file is part of GCC.
# define MAP_FAILED ((void *)-1)
#endif
-#ifdef ENABLE_VALGRIND_CHECKING
-# ifdef HAVE_VALGRIND_MEMCHECK_H
-# include <valgrind/memcheck.h>
-# elif defined HAVE_MEMCHECK_H
-# include <memcheck.h>
-# else
-# include <valgrind.h>
-# endif
-#else
-/* Avoid #ifdef:s when we can help it. */
-#define VALGRIND_DISCARD(x)
-#endif
-
/* When set, ggc_collect will do collection. */
bool ggc_force_collect;
+/* When true, protect the contents of the identifier hash table. */
+bool ggc_protect_identifiers = true;
+
/* Statistics about the allocation. */
static ggc_statistics *ggc_stats;
for (i = 0; i < rti->nelt; i++)
(*rti->cb)(*(void **)((char *)rti->base + rti->stride * i));
- ggc_mark_stringpool ();
+ if (ggc_protect_identifiers)
+ ggc_mark_stringpool ();
/* Now scan all hash tables that have objects which are to be deleted if
they are not already marked. */
if (*cti->base)
{
ggc_set_mark (*cti->base);
- htab_traverse_noresize (*cti->base, ggc_htab_delete, (void *) cti);
+ htab_traverse_noresize (*cti->base, ggc_htab_delete,
+ CONST_CAST (void *, (const void *)cti));
ggc_set_mark ((*cti->base)->entries);
}
+
+ if (! ggc_protect_identifiers)
+ ggc_purge_stringpool ();
}
/* Allocate a block of memory, then clear it. */
old_size as reachable, but that would lose tracking of writes
after the end of the object (by small offsets). Discard the
handle to avoid handle leak. */
- VALGRIND_DISCARD (VALGRIND_MAKE_NOACCESS ((char *) x + size,
- old_size - size));
- VALGRIND_DISCARD (VALGRIND_MAKE_READABLE (x, size));
+ VALGRIND_DISCARD (VALGRIND_MAKE_MEM_NOACCESS ((char *) x + size,
+ old_size - size));
+ VALGRIND_DISCARD (VALGRIND_MAKE_MEM_DEFINED (x, size));
return x;
}
individually allocated object, we'd access parts of the old object
that were marked invalid with the memcpy below. We lose a bit of the
initialization-tracking since some of it may be uninitialized. */
- VALGRIND_DISCARD (VALGRIND_MAKE_READABLE (x, old_size));
+ VALGRIND_DISCARD (VALGRIND_MAKE_MEM_DEFINED (x, old_size));
memcpy (r, x, old_size);
return 0;
}
- *slot = xcalloc (sizeof (struct ptr_data), 1);
+ *slot = XCNEW (struct ptr_data);
(*slot)->obj = obj;
(*slot)->note_ptr_fn = note_ptr_fn;
(*slot)->note_ptr_cookie = note_ptr_cookie;
if (note_ptr_fn == gt_pch_p_S)
- (*slot)->size = strlen (obj) + 1;
+ (*slot)->size = strlen ((const char *)obj) + 1;
else
(*slot)->size = ggc_get_size (obj);
(*slot)->type = type;
if (obj == NULL || obj == (void *) 1)
return;
- data = htab_find_with_hash (saving_htab, obj, POINTER_HASH (obj));
+ data = (struct ptr_data *)
+ htab_find_with_hash (saving_htab, obj, POINTER_HASH (obj));
gcc_assert (data && data->note_ptr_cookie == note_ptr_cookie);
data->reorder_fn = reorder_fn;
if (*ptr == NULL || *ptr == (void *)1)
return;
- result = htab_find_with_hash (saving_htab, *ptr, POINTER_HASH (*ptr));
+ result = (struct ptr_data *)
+ htab_find_with_hash (saving_htab, *ptr, POINTER_HASH (*ptr));
gcc_assert (result);
*ptr = result->new_addr;
}
}
else
{
- new_ptr = htab_find_with_hash (saving_htab, ptr,
- POINTER_HASH (ptr));
+ new_ptr = (struct ptr_data *)
+ htab_find_with_hash (saving_htab, ptr, POINTER_HASH (ptr));
if (fwrite (&new_ptr->new_addr, sizeof (void *), 1, state->f)
!= 1)
fatal_error ("can't write PCH file: %m");
if (this_object_size < state.ptrs[i]->size)
{
this_object_size = state.ptrs[i]->size;
- this_object = xrealloc (this_object, this_object_size);
+ this_object = XRESIZEVAR (char, this_object, this_object_size);
}
memcpy (this_object, state.ptrs[i]->obj, state.ptrs[i]->size);
if (state.ptrs[i]->reorder_fn != NULL)
if (ret == (void *) MAP_FAILED)
ret = NULL;
else
- munmap (ret, size);
+ munmap ((caddr_t) ret, size);
return ret;
}
if (size == 0)
return -1;
- addr = mmap (base, size, PROT_READ | PROT_WRITE, MAP_PRIVATE,
+ addr = mmap ((caddr_t) base, size, PROT_READ | PROT_WRITE, MAP_PRIVATE,
fd, offset);
return addr == base ? 1 : -1;
static hashval_t
hash_descriptor (const void *p)
{
- const struct loc_descriptor *const d = p;
+ const struct loc_descriptor *const d = (const struct loc_descriptor *) p;
return htab_hash_pointer (d->function) | d->line;
}
static int
eq_descriptor (const void *p1, const void *p2)
{
- const struct loc_descriptor *const d = p1;
- const struct loc_descriptor *const d2 = p2;
+ const struct loc_descriptor *const d = (const struct loc_descriptor *) p1;
+ const struct loc_descriptor *const d2 = (const struct loc_descriptor *) p2;
return (d->file == d2->file && d->line == d2->line
&& d->function == d2->function);
static hashval_t
hash_ptr (const void *p)
{
- const struct ptr_hash_entry *const d = p;
+ const struct ptr_hash_entry *const d = (const struct ptr_hash_entry *) p;
return htab_hash_pointer (d->ptr);
}
static int
eq_ptr (const void *p1, const void *p2)
{
- const struct ptr_hash_entry *const p = p1;
+ const struct ptr_hash_entry *const p = (const struct ptr_hash_entry *) p1;
return (p->ptr == p2);
}
slot = (struct loc_descriptor **) htab_find_slot (loc_hash, &loc, 1);
if (*slot)
return *slot;
- *slot = xcalloc (sizeof (**slot), 1);
+ *slot = XCNEW (struct loc_descriptor);
(*slot)->file = name;
(*slot)->line = line;
(*slot)->function = function;
static int
ggc_prune_ptr (void **slot, void *b ATTRIBUTE_UNUSED)
{
- struct ptr_hash_entry *p = *slot;
+ struct ptr_hash_entry *p = (struct ptr_hash_entry *) *slot;
if (!ggc_marked_p (p->ptr))
{
p->loc->collected += p->size;
{
PTR *slot = htab_find_slot_with_hash (ptr_hash, ptr, htab_hash_pointer (ptr),
NO_INSERT);
- struct ptr_hash_entry *p = *slot;
+ struct ptr_hash_entry *p = (struct ptr_hash_entry *) *slot;
p->loc->freed += p->size;
htab_clear_slot (ptr_hash, slot);
free (p);
static int
final_cmp_statistic (const void *loc1, const void *loc2)
{
- struct loc_descriptor *l1 = *(struct loc_descriptor **) loc1;
- struct loc_descriptor *l2 = *(struct loc_descriptor **) loc2;
+ const struct loc_descriptor *const l1 =
+ *(const struct loc_descriptor *const *) loc1;
+ const struct loc_descriptor *const l2 =
+ *(const struct loc_descriptor *const *) loc2;
long diff;
diff = ((long)(l1->allocated + l1->overhead - l1->freed) -
(l2->allocated + l2->overhead - l2->freed));
static int
cmp_statistic (const void *loc1, const void *loc2)
{
- struct loc_descriptor *l1 = *(struct loc_descriptor **) loc1;
- struct loc_descriptor *l2 = *(struct loc_descriptor **) loc2;
+ const struct loc_descriptor *const l1 =
+ *(const struct loc_descriptor *const *) loc1;
+ const struct loc_descriptor *const l2 =
+ *(const struct loc_descriptor *const *) loc2;
long diff;
diff = ((long)(l1->allocated + l1->overhead - l1->freed - l1->collected) -
ggc_force_collect = true;
ggc_collect ();
- loc_array = xcalloc (sizeof (*loc_array), loc_hash->n_elements);
+ loc_array = XCNEWVEC (struct loc_descriptor *, loc_hash->n_elements);
fprintf (stderr, "-------------------------------------------------------\n");
fprintf (stderr, "\n%-48s %10s %10s %10s %10s %10s\n",
"source location", "Garbage", "Freed", "Leak", "Overhead", "Times");
fprintf (stderr, "%-48s %10s %10s %10s %10s %10s\n",
"source location", "Garbage", "Freed", "Leak", "Overhead", "Times");
fprintf (stderr, "-------------------------------------------------------\n");
+ ggc_force_collect = false;
#endif
}