linux-packaging-mono/mono/sgen/sgen-pinning-stats.c
Xamarin Public Jenkins (auto-signing) 966bba02bb Imported Upstream version 5.2.0.175
Former-commit-id: bb0468d0f257ff100aa895eb5fe583fb5dfbf900
2017-06-07 13:16:24 +00:00

251 lines
6.7 KiB
C

/**
* \file
* Copyright 2001-2003 Ximian, Inc
* Copyright 2003-2010 Novell, Inc.
* Copyright 2011 Xamarin Inc (http://www.xamarin.com)
*
* Licensed under the MIT license. See LICENSE file in the project root for full license information.
*/
#include "config.h"
#ifdef HAVE_SGEN_GC
#include <string.h>
#include "mono/sgen/sgen-gc.h"
#include "mono/sgen/sgen-pinning.h"
#include "mono/sgen/sgen-hash-table.h"
#include "mono/sgen/sgen-client.h"
typedef struct _PinStatAddress PinStatAddress;
struct _PinStatAddress {
char *addr;
int pin_types;
PinStatAddress *left;
PinStatAddress *right;
};
typedef struct {
size_t num_pins [PIN_TYPE_MAX];
} PinnedClassEntry;
typedef struct {
gulong num_remsets;
} GlobalRemsetClassEntry;
static gboolean do_pin_stats = FALSE;
static PinStatAddress *pin_stat_addresses = NULL;
static size_t pinned_byte_counts [PIN_TYPE_MAX];
static size_t pinned_bytes_in_generation [GENERATION_MAX];
static int pinned_objects_in_generation [GENERATION_MAX];
static SgenPointerQueue pinned_objects = SGEN_POINTER_QUEUE_INIT (INTERNAL_MEM_STATISTICS);
static SgenHashTable pinned_class_hash_table = SGEN_HASH_TABLE_INIT (INTERNAL_MEM_STATISTICS, INTERNAL_MEM_STAT_PINNED_CLASS, sizeof (PinnedClassEntry), g_str_hash, g_str_equal);
static SgenHashTable global_remset_class_hash_table = SGEN_HASH_TABLE_INIT (INTERNAL_MEM_STATISTICS, INTERNAL_MEM_STAT_REMSET_CLASS, sizeof (GlobalRemsetClassEntry), g_str_hash, g_str_equal);
void
sgen_pin_stats_enable (void)
{
do_pin_stats = TRUE;
}
static void
pin_stats_tree_free (PinStatAddress *node)
{
if (!node)
return;
pin_stats_tree_free (node->left);
pin_stats_tree_free (node->right);
sgen_free_internal_dynamic (node, sizeof (PinStatAddress), INTERNAL_MEM_STATISTICS);
}
void
sgen_pin_stats_reset (void)
{
int i;
pin_stats_tree_free (pin_stat_addresses);
pin_stat_addresses = NULL;
for (i = 0; i < PIN_TYPE_MAX; ++i)
pinned_byte_counts [i] = 0;
for (i = 0; i < GENERATION_MAX; ++i) {
pinned_bytes_in_generation [i] = 0;
pinned_objects_in_generation [i] = 0;
}
sgen_pointer_queue_clear (&pinned_objects);
sgen_hash_table_clean (&pinned_class_hash_table);
sgen_hash_table_clean (&global_remset_class_hash_table);
}
void
sgen_pin_stats_register_address (char *addr, int pin_type)
{
PinStatAddress **node_ptr = &pin_stat_addresses;
PinStatAddress *node;
int pin_type_bit = 1 << pin_type;
if (!do_pin_stats)
return;
while (*node_ptr) {
node = *node_ptr;
if (addr == node->addr) {
node->pin_types |= pin_type_bit;
return;
}
if (addr < node->addr)
node_ptr = &node->left;
else
node_ptr = &node->right;
}
node = (PinStatAddress *)sgen_alloc_internal_dynamic (sizeof (PinStatAddress), INTERNAL_MEM_STATISTICS, TRUE);
node->addr = addr;
node->pin_types = pin_type_bit;
node->left = node->right = NULL;
*node_ptr = node;
}
static void
pin_stats_count_object_from_tree (GCObject *object, size_t size, PinStatAddress *node, int *pin_types)
{
char *obj = (char*)object;
if (!node)
return;
if (node->addr >= obj && node->addr < obj + size) {
int i;
for (i = 0; i < PIN_TYPE_MAX; ++i) {
int pin_bit = 1 << i;
if (!(*pin_types & pin_bit) && (node->pin_types & pin_bit)) {
pinned_byte_counts [i] += size;
*pin_types |= pin_bit;
}
}
}
if (obj < node->addr)
pin_stats_count_object_from_tree (object, size, node->left, pin_types);
if (obj + size - 1 > node->addr)
pin_stats_count_object_from_tree (object, size, node->right, pin_types);
}
static gpointer
lookup_vtable_entry (SgenHashTable *hash_table, GCVTable vtable, gpointer empty_entry)
{
char *name = g_strdup_printf ("%s.%s", sgen_client_vtable_get_namespace (vtable), sgen_client_vtable_get_name (vtable));
gpointer entry = sgen_hash_table_lookup (hash_table, name);
if (entry) {
g_free (name);
} else {
sgen_hash_table_replace (hash_table, name, empty_entry, NULL);
entry = sgen_hash_table_lookup (hash_table, name);
}
return entry;
}
static void
register_vtable (GCVTable vtable, int pin_types)
{
PinnedClassEntry empty_entry;
PinnedClassEntry *entry;
int i;
memset (&empty_entry, 0, sizeof (PinnedClassEntry));
entry = (PinnedClassEntry *)lookup_vtable_entry (&pinned_class_hash_table, vtable, &empty_entry);
for (i = 0; i < PIN_TYPE_MAX; ++i) {
if (pin_types & (1 << i))
++entry->num_pins [i];
}
}
void
sgen_pin_stats_register_object (GCObject *obj, int generation)
{
int pin_types = 0;
size_t size = 0;
if (binary_protocol_is_enabled ()) {
size = sgen_safe_object_get_size (obj);
pinned_bytes_in_generation [generation] += size;
++pinned_objects_in_generation [generation];
}
if (!do_pin_stats)
return;
if (!size)
size = sgen_safe_object_get_size (obj);
pin_stats_count_object_from_tree (obj, size, pin_stat_addresses, &pin_types);
sgen_pointer_queue_add (&pinned_objects, obj);
if (pin_types)
register_vtable (SGEN_LOAD_VTABLE (obj), pin_types);
}
void
sgen_pin_stats_register_global_remset (GCObject *obj)
{
GlobalRemsetClassEntry empty_entry;
GlobalRemsetClassEntry *entry;
if (!do_pin_stats)
return;
memset (&empty_entry, 0, sizeof (GlobalRemsetClassEntry));
entry = (GlobalRemsetClassEntry *)lookup_vtable_entry (&global_remset_class_hash_table, SGEN_LOAD_VTABLE (obj), &empty_entry);
++entry->num_remsets;
}
void
sgen_pin_stats_report (void)
{
char *name;
PinnedClassEntry *pinned_entry;
GlobalRemsetClassEntry *remset_entry;
binary_protocol_pin_stats (pinned_objects_in_generation [GENERATION_NURSERY], pinned_bytes_in_generation [GENERATION_NURSERY],
pinned_objects_in_generation [GENERATION_OLD], pinned_bytes_in_generation [GENERATION_OLD]);
if (!do_pin_stats)
return;
mono_gc_printf (gc_debug_file, "\n%-50s %10s %10s %10s\n", "Class", "Stack", "Static", "Other");
SGEN_HASH_TABLE_FOREACH (&pinned_class_hash_table, char *, name, PinnedClassEntry *, pinned_entry) {
int i;
mono_gc_printf (gc_debug_file, "%-50s", name);
for (i = 0; i < PIN_TYPE_MAX; ++i)
mono_gc_printf (gc_debug_file, " %10ld", pinned_entry->num_pins [i]);
mono_gc_printf (gc_debug_file, "\n");
} SGEN_HASH_TABLE_FOREACH_END;
mono_gc_printf (gc_debug_file, "\n%-50s %10s\n", "Class", "#Remsets");
SGEN_HASH_TABLE_FOREACH (&global_remset_class_hash_table, char *, name, GlobalRemsetClassEntry *, remset_entry) {
mono_gc_printf (gc_debug_file, "%-50s %10ld\n", name, remset_entry->num_remsets);
} SGEN_HASH_TABLE_FOREACH_END;
mono_gc_printf (gc_debug_file, "\nTotal bytes pinned from stack: %ld static: %ld other: %ld\n",
pinned_byte_counts [PIN_TYPE_STACK],
pinned_byte_counts [PIN_TYPE_STATIC_DATA],
pinned_byte_counts [PIN_TYPE_OTHER]);
}
size_t
sgen_pin_stats_get_pinned_byte_count (int pin_type)
{
return pinned_byte_counts [pin_type];
}
SgenPointerQueue*
sgen_pin_stats_get_object_list (void)
{
return &pinned_objects;
}
#endif /* HAVE_SGEN_GC */