/* Simple garbage collection for the GNU compiler.
- Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004
+ Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
/* Generic garbage collection (GC) functions and data, not specific to
any particular GC implementation. */
#include "params.h"
#include "hosthooks.h"
#include "hosthooks-def.h"
+#include "plugin.h"
+#include "vec.h"
+#include "timevar.h"
#ifdef HAVE_SYS_RESOURCE_H
# include <sys/resource.h>
# include <sys/mman.h>
# ifdef HAVE_MINCORE
/* This is on Solaris. */
-# include <sys/types.h>
+# include <sys/types.h>
# endif
#endif
# 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;
return 1;
}
+
+/* This extra vector of dynamically registered root_tab-s is used by
+ ggc_mark_roots and gives the ability to dynamically add new GGC root
+ tables, for instance from some plugins; this vector is on the heap
+ since it is used by GGC internally. */
+typedef const struct ggc_root_tab *const_ggc_root_tab_t;
+DEF_VEC_P(const_ggc_root_tab_t);
+DEF_VEC_ALLOC_P(const_ggc_root_tab_t, heap);
+static VEC(const_ggc_root_tab_t, heap) *extra_root_vec;
+
+/* Dynamically register a new GGC root table RT. This is useful for
+ plugins. */
+
+void
+ggc_register_root_tab (const struct ggc_root_tab* rt)
+{
+ if (rt)
+ VEC_safe_push (const_ggc_root_tab_t, heap, extra_root_vec, rt);
+}
+
+/* This extra vector of dynamically registered cache_tab-s is used by
+ ggc_mark_roots and gives the ability to dynamically add new GGC cache
+ tables, for instance from some plugins; this vector is on the heap
+ since it is used by GGC internally. */
+typedef const struct ggc_cache_tab *const_ggc_cache_tab_t;
+DEF_VEC_P(const_ggc_cache_tab_t);
+DEF_VEC_ALLOC_P(const_ggc_cache_tab_t, heap);
+static VEC(const_ggc_cache_tab_t, heap) *extra_cache_vec;
+
+/* Dynamically register a new GGC cache table CT. This is useful for
+ plugins. */
+
+void
+ggc_register_cache_tab (const struct ggc_cache_tab* ct)
+{
+ if (ct)
+ VEC_safe_push (const_ggc_cache_tab_t, heap, extra_cache_vec, ct);
+}
+
+/* Scan a hash table that has objects which are to be deleted if they are not
+ already marked. */
+
+static void
+ggc_scan_cache_tab (const_ggc_cache_tab_t ctp)
+{
+ const struct ggc_cache_tab *cti;
+
+ for (cti = ctp; cti->base != NULL; cti++)
+ if (*cti->base)
+ {
+ ggc_set_mark (*cti->base);
+ htab_traverse_noresize (*cti->base, ggc_htab_delete,
+ CONST_CAST (void *, (const void *)cti));
+ ggc_set_mark ((*cti->base)->entries);
+ }
+}
+
/* Iterate through all registered roots and mark each element. */
void
{
const struct ggc_root_tab *const *rt;
const struct ggc_root_tab *rti;
+ const_ggc_root_tab_t rtp;
const struct ggc_cache_tab *const *ct;
- const struct ggc_cache_tab *cti;
+ const_ggc_cache_tab_t ctp;
size_t i;
for (rt = gt_ggc_deletable_rtab; *rt; rt++)
for (rt = gt_ggc_rtab; *rt; rt++)
for (rti = *rt; rti->base != NULL; rti++)
for (i = 0; i < rti->nelt; i++)
- (*rti->cb)(*(void **)((char *)rti->base + rti->stride * i));
+ (*rti->cb) (*(void **)((char *)rti->base + rti->stride * i));
+
+ for (i = 0; VEC_iterate (const_ggc_root_tab_t, extra_root_vec, i, rtp); i++)
+ {
+ for (rti = rtp; rti->base != NULL; rti++)
+ 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. */
for (ct = gt_ggc_cache_rtab; *ct; ct++)
- for (cti = *ct; cti->base != NULL; cti++)
- if (*cti->base)
- {
- ggc_set_mark (*cti->base);
- htab_traverse_noresize (*cti->base, ggc_htab_delete, (void *) cti);
- ggc_set_mark ((*cti->base)->entries);
- }
+ ggc_scan_cache_tab (*ct);
+
+ for (i = 0; VEC_iterate (const_ggc_cache_tab_t, extra_cache_vec, i, ctp); i++)
+ ggc_scan_cache_tab (ctp);
+
+ if (! ggc_protect_identifiers)
+ ggc_purge_stringpool ();
+
+ /* Some plugins may call ggc_set_mark from here. */
+ invoke_plugin_callbacks (PLUGIN_GGC_MARKING, NULL);
}
/* 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);
void *
ggc_splay_alloc (int sz, void *nl)
{
- if (nl != NULL)
- abort ();
+ gcc_assert (!nl);
return ggc_alloc (sz);
}
void
ggc_splay_dont_free (void * x ATTRIBUTE_UNUSED, void *nl)
{
- if (nl != NULL)
- abort ();
+ gcc_assert (!nl);
}
/* Print statistics that are independent of the collector in use. */
gt_handle_reorder reorder_fn;
size_t size;
void *new_addr;
+ enum gt_types_enum type;
};
#define POINTER_HASH(x) (hashval_t)((long)x >> 3)
int
gt_pch_note_object (void *obj, void *note_ptr_cookie,
- gt_note_pointers note_ptr_fn)
+ gt_note_pointers note_ptr_fn,
+ enum gt_types_enum type)
{
struct ptr_data **slot;
INSERT);
if (*slot != NULL)
{
- if ((*slot)->note_ptr_fn != note_ptr_fn
- || (*slot)->note_ptr_cookie != note_ptr_cookie)
- abort ();
+ gcc_assert ((*slot)->note_ptr_fn == note_ptr_fn
+ && (*slot)->note_ptr_cookie == note_ptr_cookie);
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;
return 1;
}
if (obj == NULL || obj == (void *) 1)
return;
- data = htab_find_with_hash (saving_htab, obj, POINTER_HASH (obj));
- if (data == NULL
- || data->note_ptr_cookie != note_ptr_cookie)
- abort ();
+ 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;
}
static hashval_t
saving_htab_hash (const void *p)
{
- return POINTER_HASH (((struct ptr_data *)p)->obj);
+ return POINTER_HASH (((const struct ptr_data *)p)->obj);
}
static int
saving_htab_eq (const void *p1, const void *p2)
{
- return ((struct ptr_data *)p1)->obj == p2;
+ return ((const struct ptr_data *)p1)->obj == p2;
}
/* Handy state for the traversal functions. */
struct ptr_data *d = (struct ptr_data *)*slot;
struct traversal_state *state = (struct traversal_state *)state_p;
- ggc_pch_count_object (state->d, d->obj, d->size, d->note_ptr_fn == gt_pch_p_S);
+ ggc_pch_count_object (state->d, d->obj, d->size,
+ d->note_ptr_fn == gt_pch_p_S,
+ d->type);
state->count++;
return 1;
}
struct ptr_data *d = (struct ptr_data *)*slot;
struct traversal_state *state = (struct traversal_state *)state_p;
- d->new_addr = ggc_pch_alloc_object (state->d, d->obj, d->size, d->note_ptr_fn == gt_pch_p_S);
+ d->new_addr = ggc_pch_alloc_object (state->d, d->obj, d->size,
+ d->note_ptr_fn == gt_pch_p_S,
+ d->type);
state->ptrs[state->ptrs_i++] = d;
return 1;
}
static int
compare_ptr_data (const void *p1_p, const void *p2_p)
{
- struct ptr_data *p1 = *(struct ptr_data *const *)p1_p;
- struct ptr_data *p2 = *(struct ptr_data *const *)p2_p;
+ const struct ptr_data *const p1 = *(const struct ptr_data *const *)p1_p;
+ const struct ptr_data *const p2 = *(const struct ptr_data *const *)p2_p;
return (((size_t)p1->new_addr > (size_t)p2->new_addr)
- ((size_t)p1->new_addr < (size_t)p2->new_addr));
}
if (*ptr == NULL || *ptr == (void *)1)
return;
- result = htab_find_with_hash (saving_htab, *ptr, POINTER_HASH (*ptr));
- if (result == NULL)
- abort ();
+ 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");
gt_pch_save_stringpool ();
+ timevar_push (TV_PCH_PTR_REALLOC);
saving_htab = htab_create (50000, saving_htab_hash, saving_htab_eq, free);
for (rt = gt_ggc_rtab; *rt; rt++)
/* Try to arrange things so that no relocation is necessary, but
don't try very hard. On most platforms, this will always work,
- and on the rest it's a lot of work to do better.
+ and on the rest it's a lot of work to do better.
(The extra work goes in HOST_HOOKS_GT_PCH_GET_ADDRESS and
HOST_HOOKS_GT_PCH_USE_ADDRESS.) */
mmi.preferred_base = host_hooks.gt_pch_get_address (mmi.size, fileno (f));
-
+
ggc_pch_this_base (state.d, mmi.preferred_base);
- state.ptrs = xmalloc (state.count * sizeof (*state.ptrs));
+ state.ptrs = XNEWVEC (struct ptr_data *, state.count);
state.ptrs_i = 0;
+
htab_traverse (saving_htab, call_alloc, &state);
+ timevar_pop (TV_PCH_PTR_REALLOC);
+
+ timevar_push (TV_PCH_PTR_SORT);
qsort (state.ptrs, state.count, sizeof (*state.ptrs), compare_ptr_data);
+ timevar_pop (TV_PCH_PTR_SORT);
/* Write out all the scalar variables. */
for (rt = gt_pch_scalar_rtab; *rt; rt++)
write_pch_globals (gt_ggc_rtab, &state);
write_pch_globals (gt_pch_cache_rtab, &state);
- ggc_pch_prepare_write (state.d, state.f);
-
/* Pad the PCH file so that the mmapped area starts on an allocation
granularity (usually page) boundary. */
{
&& fseek (state.f, mmi.offset, SEEK_SET) != 0)
fatal_error ("can't write padding to PCH file: %m");
+ ggc_pch_prepare_write (state.d, state.f);
+
/* Actually write out the objects. */
for (i = 0; i < state.count; i++)
{
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;
}
/* Default version of HOST_HOOKS_GT_PCH_USE_ADDRESS when mmap is present.
- Map SIZE bytes of FD+OFFSET at BASE. Return 1 if we succeeded at
+ Map SIZE bytes of FD+OFFSET at BASE. Return 1 if we succeeded at
mapping the data at BASE, -1 if we couldn't.
This version assumes that the kernel honors the START operand of mmap
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;
}
#endif /* HAVE_MMAP_FILE */
-/* Modify the bound based on rlimits. Keep the smallest number found. */
+/* Modify the bound based on rlimits. */
static double
ggc_rlimit_bound (double limit)
{
#if defined(HAVE_GETRLIMIT)
struct rlimit rlim;
-# ifdef RLIMIT_RSS
- if (getrlimit (RLIMIT_RSS, &rlim) == 0
+# if defined (RLIMIT_AS)
+ /* RLIMIT_AS is what POSIX says is the limit on mmap. Presumably
+ any OS which has RLIMIT_AS also has a working mmap that GCC will use. */
+ if (getrlimit (RLIMIT_AS, &rlim) == 0
&& rlim.rlim_cur != (rlim_t) RLIM_INFINITY
&& rlim.rlim_cur < limit)
limit = rlim.rlim_cur;
-# endif
-# ifdef RLIMIT_DATA
+# elif defined (RLIMIT_DATA)
+ /* ... but some older OSs bound mmap based on RLIMIT_DATA, or we
+ might be on an OS that has a broken mmap. (Others don't bound
+ mmap at all, apparently.) */
if (getrlimit (RLIMIT_DATA, &rlim) == 0
&& rlim.rlim_cur != (rlim_t) RLIM_INFINITY
- && rlim.rlim_cur < limit)
+ && rlim.rlim_cur < limit
+ /* Darwin has this horribly bogus default setting of
+ RLIMIT_DATA, to 6144Kb. No-one notices because RLIMIT_DATA
+ appears to be ignored. Ignore such silliness. If a limit
+ this small was actually effective for mmap, GCC wouldn't even
+ start up. */
+ && rlim.rlim_cur >= 8 * 1024 * 1024)
limit = rlim.rlim_cur;
-# endif
-# ifdef RLIMIT_AS
- if (getrlimit (RLIMIT_AS, &rlim) == 0
- && rlim.rlim_cur != (rlim_t) RLIM_INFINITY
- && rlim.rlim_cur < limit)
- limit = rlim.rlim_cur;
-# endif
+# endif /* RLIMIT_AS or RLIMIT_DATA */
#endif /* HAVE_GETRLIMIT */
return limit;
int
ggc_min_heapsize_heuristic (void)
{
- double min_heap_kbytes = physmem_total();
-
- /* Adjust for rlimits. */
- min_heap_kbytes = ggc_rlimit_bound (min_heap_kbytes);
+ double phys_kbytes = physmem_total();
+ double limit_kbytes = ggc_rlimit_bound (phys_kbytes * 2);
- min_heap_kbytes /= 1024; /* Convert to Kbytes. */
+ phys_kbytes /= 1024; /* Convert to Kbytes. */
+ limit_kbytes /= 1024;
/* The heuristic is RAM/8, with a lower bound of 4M and an upper
bound of 128M (when RAM >= 1GB). */
- min_heap_kbytes /= 8;
- min_heap_kbytes = MAX (min_heap_kbytes, 4 * 1024);
- min_heap_kbytes = MIN (min_heap_kbytes, 128 * 1024);
+ phys_kbytes /= 8;
+
+#if defined(HAVE_GETRLIMIT) && defined (RLIMIT_RSS)
+ /* Try not to overrun the RSS limit while doing garbage collection.
+ The RSS limit is only advisory, so no margin is subtracted. */
+ {
+ struct rlimit rlim;
+ if (getrlimit (RLIMIT_RSS, &rlim) == 0
+ && rlim.rlim_cur != (rlim_t) RLIM_INFINITY)
+ phys_kbytes = MIN (phys_kbytes, rlim.rlim_cur / 1024);
+ }
+# endif
+
+ /* Don't blindly run over our data limit; do GC at least when the
+ *next* GC would be within 20Mb of the limit or within a quarter of
+ the limit, whichever is larger. If GCC does hit the data limit,
+ compilation will fail, so this tries to be conservative. */
+ limit_kbytes = MAX (0, limit_kbytes - MAX (limit_kbytes / 4, 20 * 1024));
+ limit_kbytes = (limit_kbytes * 100) / (110 + ggc_min_expand_heuristic());
+ phys_kbytes = MIN (phys_kbytes, limit_kbytes);
- return min_heap_kbytes;
+ phys_kbytes = MAX (phys_kbytes, 4 * 1024);
+ phys_kbytes = MIN (phys_kbytes, 128 * 1024);
+
+ return phys_kbytes;
}
void
int times;
size_t allocated;
size_t overhead;
+ size_t freed;
+ size_t collected;
};
/* Hashtable used for statistics. */
static hashval_t
hash_descriptor (const void *p)
{
- const struct loc_descriptor *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 *d = p1;
- const struct loc_descriptor *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);
}
+/* Hashtable converting address of allocated field to loc descriptor. */
+static htab_t ptr_hash;
+struct ptr_hash_entry
+{
+ void *ptr;
+ struct loc_descriptor *loc;
+ size_t size;
+};
+
+/* Hash table helpers functions. */
+static hashval_t
+hash_ptr (const void *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 = (const struct ptr_hash_entry *) p1;
+
+ return (p->ptr == p2);
+}
+
/* Return descriptor for given call site, create new one if needed. */
static struct loc_descriptor *
loc_descriptor (const char *name, int line, const char *function)
if (!loc_hash)
loc_hash = htab_create (10, hash_descriptor, eq_descriptor, NULL);
- slot = (struct loc_descriptor **) htab_find_slot (loc_hash, &loc, 1);
+ slot = (struct loc_descriptor **) htab_find_slot (loc_hash, &loc, INSERT);
if (*slot)
return *slot;
- *slot = xcalloc (sizeof (**slot), 1);
+ *slot = XCNEW (struct loc_descriptor);
(*slot)->file = name;
(*slot)->line = line;
(*slot)->function = function;
/* Record ALLOCATED and OVERHEAD bytes to descriptor NAME:LINE (FUNCTION). */
void
-ggc_record_overhead (size_t allocated, size_t overhead,
+ggc_record_overhead (size_t allocated, size_t overhead, void *ptr,
const char *name, int line, const char *function)
{
struct loc_descriptor *loc = loc_descriptor (name, line, function);
+ struct ptr_hash_entry *p = XNEW (struct ptr_hash_entry);
+ PTR *slot;
+
+ p->ptr = ptr;
+ p->loc = loc;
+ p->size = allocated + overhead;
+ if (!ptr_hash)
+ ptr_hash = htab_create (10, hash_ptr, eq_ptr, NULL);
+ slot = htab_find_slot_with_hash (ptr_hash, ptr, htab_hash_pointer (ptr), INSERT);
+ gcc_assert (!*slot);
+ *slot = p;
loc->times++;
loc->allocated+=allocated;
loc->overhead+=overhead;
}
+/* Helper function for prune_overhead_list. See if SLOT is still marked and
+ remove it from hashtable if it is not. */
+static int
+ggc_prune_ptr (void **slot, void *b ATTRIBUTE_UNUSED)
+{
+ struct ptr_hash_entry *p = (struct ptr_hash_entry *) *slot;
+ if (!ggc_marked_p (p->ptr))
+ {
+ p->loc->collected += p->size;
+ htab_clear_slot (ptr_hash, slot);
+ free (p);
+ }
+ return 1;
+}
+
+/* After live values has been marked, walk all recorded pointers and see if
+ they are still live. */
+void
+ggc_prune_overhead_list (void)
+{
+ htab_traverse (ptr_hash, ggc_prune_ptr, NULL);
+}
+
+/* Notice that the pointer has been freed. */
+void
+ggc_free_overhead (void *ptr)
+{
+ PTR *slot = htab_find_slot_with_hash (ptr_hash, ptr, htab_hash_pointer (ptr),
+ NO_INSERT);
+ struct ptr_hash_entry *p = (struct ptr_hash_entry *) *slot;
+ p->loc->freed += p->size;
+ htab_clear_slot (ptr_hash, slot);
+ free (p);
+}
+
+/* Helper for qsort; sort descriptors by amount of memory consumed. */
+static int
+final_cmp_statistic (const void *loc1, const void *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));
+ return diff > 0 ? 1 : diff < 0 ? -1 : 0;
+}
+
/* Helper for qsort; sort descriptors by amount of memory consumed. */
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;
- return (l1->allocated + l1->overhead) - (l2->allocated + l2->overhead);
+ 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) -
+ (l2->allocated + l2->overhead - l2->freed - l2->collected));
+ if (diff)
+ return diff > 0 ? 1 : diff < 0 ? -1 : 0;
+ diff = ((long)(l1->allocated + l1->overhead - l1->freed) -
+ (l2->allocated + l2->overhead - l2->freed));
+ return diff > 0 ? 1 : diff < 0 ? -1 : 0;
}
/* Collect array of the descriptors from hashtable. */
-struct loc_descriptor **loc_array;
+static struct loc_descriptor **loc_array;
static int
add_statistics (void **slot, void *b)
{
/* Dump per-site memory statistics. */
#endif
-void dump_ggc_loc_statistics (void)
+void
+dump_ggc_loc_statistics (bool final ATTRIBUTE_UNUSED)
{
#ifdef GATHER_STATISTICS
int nentries = 0;
char s[4096];
- size_t count, size, overhead;
+ size_t collected = 0, freed = 0, allocated = 0, overhead = 0, times = 0;
int i;
- loc_array = xcalloc (sizeof (*loc_array), loc_hash->n_elements);
+ ggc_force_collect = true;
+ ggc_collect ();
+
+ loc_array = XCNEWVEC (struct loc_descriptor *, loc_hash->n_elements);
fprintf (stderr, "-------------------------------------------------------\n");
- fprintf (stderr, "\n%-60s %10s %10s %10s\n",
- "source location", "Times", "Allocated", "Overhead");
+ fprintf (stderr, "\n%-48s %10s %10s %10s %10s %10s\n",
+ "source location", "Garbage", "Freed", "Leak", "Overhead", "Times");
fprintf (stderr, "-------------------------------------------------------\n");
- count = 0;
- size = 0;
- overhead = 0;
htab_traverse (loc_hash, add_statistics, &nentries);
- qsort (loc_array, nentries, sizeof (*loc_array), cmp_statistic);
+ qsort (loc_array, nentries, sizeof (*loc_array),
+ final ? final_cmp_statistic : cmp_statistic);
for (i = 0; i < nentries; i++)
{
struct loc_descriptor *d = loc_array[i];
- size += d->allocated;
- count += d->times;
+ allocated += d->allocated;
+ times += d->times;
+ freed += d->freed;
+ collected += d->collected;
overhead += d->overhead;
}
for (i = 0; i < nentries; i++)
while ((s2 = strstr (s1, "gcc/")))
s1 = s2 + 4;
sprintf (s, "%s:%i (%s)", s1, d->line, d->function);
- fprintf (stderr, "%-60s %10i %10li %10li:%.3f%%\n", s,
- d->times, (long)d->allocated, (long)d->overhead,
- (d->allocated + d->overhead) *100.0 / (size + overhead));
+ s[48] = 0;
+ fprintf (stderr, "%-48s %10li:%4.1f%% %10li:%4.1f%% %10li:%4.1f%% %10li:%4.1f%% %10li\n", s,
+ (long)d->collected,
+ (d->collected) * 100.0 / collected,
+ (long)d->freed,
+ (d->freed) * 100.0 / freed,
+ (long)(d->allocated + d->overhead - d->freed - d->collected),
+ (d->allocated + d->overhead - d->freed - d->collected) * 100.0
+ / (allocated + overhead - freed - collected),
+ (long)d->overhead,
+ d->overhead * 100.0 / overhead,
+ (long)d->times);
}
}
- fprintf (stderr, "%-60s %10ld %10ld %10ld\n",
- "Total", (long)count, (long)size, (long)overhead);
+ fprintf (stderr, "%-48s %10ld %10ld %10ld %10ld %10ld\n",
+ "Total", (long)collected, (long)freed,
+ (long)(allocated + overhead - freed - collected), (long)overhead,
+ (long)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
}
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