dbusiface-memstats: Implement the Memstats D-Bus interface.

src/Makefile.am

@@ -1281,6 +1281,7 @@ module_dbus_protocol_la_SOURCES = \
 		modules/dbus/iface-client.c modules/dbus/iface-client.h \
 		modules/dbus/iface-core.c modules/dbus/iface-core.h \
 		modules/dbus/iface-device.c modules/dbus/iface-device.h \
+		modules/dbus/iface-memstats.c modules/dbus/iface-memstats.h \
 		modules/dbus/iface-module.c modules/dbus/iface-module.h \
 		modules/dbus/iface-sample.c modules/dbus/iface-sample.h \
 		modules/dbus/iface-stream.c modules/dbus/iface-stream.h \

src/modules/dbus/iface-core.c

@@ -41,6 +41,7 @@
 #include "iface-card.h"
 #include "iface-client.h"
 #include "iface-device.h"
+#include "iface-memstats.h"
 #include "iface-module.h"
 #include "iface-sample.h"
 #include "iface-stream.h"
@@ -114,6 +115,8 @@ struct pa_dbusiface_core {
 
     pa_hook_slot *extension_registered_slot;
     pa_hook_slot *extension_unregistered_slot;
+
+    pa_dbusiface_memstats *memstats;
 };
 
 enum property_handler_index {
@@ -1940,6 +1943,7 @@ pa_dbusiface_core *pa_dbusiface_core_new(pa_core *core) {
     c->fallback_source = pa_namereg_get_default_source(core);
     c->extension_registered_slot = pa_dbus_protocol_hook_connect(c->dbus_protocol, PA_DBUS_PROTOCOL_HOOK_EXTENSION_REGISTERED, PA_HOOK_NORMAL, extension_registered_cb, c);
     c->extension_unregistered_slot = pa_dbus_protocol_hook_connect(c->dbus_protocol, PA_DBUS_PROTOCOL_HOOK_EXTENSION_UNREGISTERED, PA_HOOK_NORMAL, extension_unregistered_cb, c);
+    c->memstats = pa_dbusiface_memstats_new(core, OBJECT_PATH);
 
     for (card = pa_idxset_first(core->cards, &idx); card; card = pa_idxset_next(core->cards, &idx))
         pa_hashmap_put(c->cards, PA_UINT32_TO_PTR(idx), pa_dbusiface_card_new(card, OBJECT_PATH));
@@ -2042,6 +2046,7 @@ void pa_dbusiface_core_free(pa_dbusiface_core *c) {
     pa_hashmap_free(c->clients, free_client_cb, NULL);
     pa_hook_slot_free(c->extension_registered_slot);
     pa_hook_slot_free(c->extension_unregistered_slot);
+    pa_dbusiface_memstats_free(c->memstats);
 
     pa_dbus_protocol_unref(c->dbus_protocol);
     pa_core_unref(c->core);

src/modules/dbus/iface-memstats.c

@@ -0,0 +1,231 @@
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2009 Tanu Kaskinen
+
+  PulseAudio 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.
+
+  PulseAudio 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
+  General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with PulseAudio; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <dbus/dbus.h>
+
+#include <pulsecore/core-scache.h>
+#include <pulsecore/core-util.h>
+#include <pulsecore/dbus-util.h>
+#include <pulsecore/protocol-dbus.h>
+
+#include "iface-memstats.h"
+
+#define OBJECT_NAME "memstats"
+
+static void handle_get_current_memblocks(DBusConnection *conn, DBusMessage *msg, void *userdata);
+static void handle_get_current_memblocks_size(DBusConnection *conn, DBusMessage *msg, void *userdata);
+static void handle_get_accumulated_memblocks(DBusConnection *conn, DBusMessage *msg, void *userdata);
+static void handle_get_accumulated_memblocks_size(DBusConnection *conn, DBusMessage *msg, void *userdata);
+static void handle_get_sample_cache_size(DBusConnection *conn, DBusMessage *msg, void *userdata);
+
+static void handle_get_all(DBusConnection *conn, DBusMessage *msg, void *userdata);
+
+struct pa_dbusiface_memstats {
+    pa_core *core;
+    char *path;
+    pa_dbus_protocol *dbus_protocol;
+};
+
+enum property_handler_index {
+    PROPERTY_HANDLER_CURRENT_MEMBLOCKS,
+    PROPERTY_HANDLER_CURRENT_MEMBLOCKS_SIZE,
+    PROPERTY_HANDLER_ACCUMULATED_MEMBLOCKS,
+    PROPERTY_HANDLER_ACCUMULATED_MEMBLOCKS_SIZE,
+    PROPERTY_HANDLER_SAMPLE_CACHE_SIZE,
+    PROPERTY_HANDLER_MAX
+};
+
+static pa_dbus_property_handler property_handlers[PROPERTY_HANDLER_MAX] = {
+    [PROPERTY_HANDLER_CURRENT_MEMBLOCKS]          = { .property_name = "CurrentMemblocks",         .type = "u", .get_cb = handle_get_current_memblocks,          .set_cb = NULL },
+    [PROPERTY_HANDLER_CURRENT_MEMBLOCKS_SIZE]     = { .property_name = "CurrentMemblocksSize",     .type = "u", .get_cb = handle_get_current_memblocks_size,     .set_cb = NULL },
+    [PROPERTY_HANDLER_ACCUMULATED_MEMBLOCKS]      = { .property_name = "AccumulatedMemblocks",     .type = "u", .get_cb = handle_get_accumulated_memblocks,      .set_cb = NULL },
+    [PROPERTY_HANDLER_ACCUMULATED_MEMBLOCKS_SIZE] = { .property_name = "AccumulatedMemblocksSize", .type = "u", .get_cb = handle_get_accumulated_memblocks_size, .set_cb = NULL },
+    [PROPERTY_HANDLER_SAMPLE_CACHE_SIZE]          = { .property_name = "SampleCacheSize",          .type = "u", .get_cb = handle_get_sample_cache_size,          .set_cb = NULL }
+};
+
+static pa_dbus_interface_info memstats_interface_info = {
+    .name = PA_DBUSIFACE_MEMSTATS_INTERFACE,
+    .method_handlers = NULL,
+    .n_method_handlers = 0,
+    .property_handlers = property_handlers,
+    .n_property_handlers = PROPERTY_HANDLER_MAX,
+    .get_all_properties_cb = handle_get_all,
+    .signals = NULL,
+    .n_signals = 0
+};
+
+static void handle_get_current_memblocks(DBusConnection *conn, DBusMessage *msg, void *userdata) {
+    pa_dbusiface_memstats *m = userdata;
+    const pa_mempool_stat *stat;
+    dbus_uint32_t current_memblocks;
+
+    pa_assert(conn);
+    pa_assert(msg);
+    pa_assert(m);
+
+    stat = pa_mempool_get_stat(m->core->mempool);
+
+    current_memblocks = pa_atomic_load(&stat->n_allocated);
+
+    pa_dbus_send_basic_variant_reply(conn, msg, DBUS_TYPE_UINT32, &current_memblocks);
+}
+
+static void handle_get_current_memblocks_size(DBusConnection *conn, DBusMessage *msg, void *userdata) {
+    pa_dbusiface_memstats *m = userdata;
+    const pa_mempool_stat *stat;
+    dbus_uint32_t current_memblocks_size;
+
+    pa_assert(conn);
+    pa_assert(msg);
+    pa_assert(m);
+
+    stat = pa_mempool_get_stat(m->core->mempool);
+
+    current_memblocks_size = pa_atomic_load(&stat->allocated_size);
+
+    pa_dbus_send_basic_variant_reply(conn, msg, DBUS_TYPE_UINT32, &current_memblocks_size);
+}
+
+static void handle_get_accumulated_memblocks(DBusConnection *conn, DBusMessage *msg, void *userdata) {
+    pa_dbusiface_memstats *m = userdata;
+    const pa_mempool_stat *stat;
+    dbus_uint32_t accumulated_memblocks;
+
+    pa_assert(conn);
+    pa_assert(msg);
+    pa_assert(m);
+
+    stat = pa_mempool_get_stat(m->core->mempool);
+
+    accumulated_memblocks = pa_atomic_load(&stat->n_accumulated);
+
+    pa_dbus_send_basic_variant_reply(conn, msg, DBUS_TYPE_UINT32, &accumulated_memblocks);
+}
+
+static void handle_get_accumulated_memblocks_size(DBusConnection *conn, DBusMessage *msg, void *userdata) {
+    pa_dbusiface_memstats *m = userdata;
+    const pa_mempool_stat *stat;
+    dbus_uint32_t accumulated_memblocks_size;
+
+    pa_assert(conn);
+    pa_assert(msg);
+    pa_assert(m);
+
+    stat = pa_mempool_get_stat(m->core->mempool);
+
+    accumulated_memblocks_size = pa_atomic_load(&stat->accumulated_size);
+
+    pa_dbus_send_basic_variant_reply(conn, msg, DBUS_TYPE_UINT32, &accumulated_memblocks_size);
+}
+
+static void handle_get_sample_cache_size(DBusConnection *conn, DBusMessage *msg, void *userdata) {
+    pa_dbusiface_memstats *m = userdata;
+    dbus_uint32_t sample_cache_size;
+
+    pa_assert(conn);
+    pa_assert(msg);
+    pa_assert(m);
+
+    sample_cache_size = pa_scache_total_size(m->core);
+
+    pa_dbus_send_basic_variant_reply(conn, msg, DBUS_TYPE_UINT32, &sample_cache_size);
+}
+
+static void handle_get_all(DBusConnection *conn, DBusMessage *msg, void *userdata) {
+    pa_dbusiface_memstats *m = userdata;
+    const pa_mempool_stat *stat;
+    dbus_uint32_t current_memblocks;
+    dbus_uint32_t current_memblocks_size;
+    dbus_uint32_t accumulated_memblocks;
+    dbus_uint32_t accumulated_memblocks_size;
+    dbus_uint32_t sample_cache_size;
+    DBusMessage *reply = NULL;
+    DBusMessageIter msg_iter;
+    DBusMessageIter dict_iter;
+
+    pa_assert(conn);
+    pa_assert(msg);
+    pa_assert(m);
+
+    stat = pa_mempool_get_stat(m->core->mempool);
+
+    current_memblocks = pa_atomic_load(&stat->n_allocated);
+    current_memblocks_size = pa_atomic_load(&stat->allocated_size);
+    accumulated_memblocks = pa_atomic_load(&stat->n_accumulated);
+    accumulated_memblocks_size = pa_atomic_load(&stat->accumulated_size);
+    sample_cache_size = pa_scache_total_size(m->core);
+
+    pa_assert_se((reply = dbus_message_new_method_return(msg)));
+
+    dbus_message_iter_init_append(reply, &msg_iter);
+    pa_assert_se(dbus_message_iter_open_container(&msg_iter, DBUS_TYPE_ARRAY, "{sv}", &dict_iter));
+
+    pa_dbus_append_basic_variant_dict_entry(&dict_iter, property_handlers[PROPERTY_HANDLER_CURRENT_MEMBLOCKS].property_name, DBUS_TYPE_UINT32, &current_memblocks);
+    pa_dbus_append_basic_variant_dict_entry(&dict_iter, property_handlers[PROPERTY_HANDLER_CURRENT_MEMBLOCKS_SIZE].property_name, DBUS_TYPE_UINT32, &current_memblocks_size);
+    pa_dbus_append_basic_variant_dict_entry(&dict_iter, property_handlers[PROPERTY_HANDLER_ACCUMULATED_MEMBLOCKS].property_name, DBUS_TYPE_UINT32, &accumulated_memblocks);
+    pa_dbus_append_basic_variant_dict_entry(&dict_iter, property_handlers[PROPERTY_HANDLER_ACCUMULATED_MEMBLOCKS_SIZE].property_name, DBUS_TYPE_UINT32, &accumulated_memblocks_size);
+    pa_dbus_append_basic_variant_dict_entry(&dict_iter, property_handlers[PROPERTY_HANDLER_SAMPLE_CACHE_SIZE].property_name, DBUS_TYPE_UINT32, &sample_cache_size);
+
+    pa_assert_se(dbus_message_iter_close_container(&msg_iter, &dict_iter));
+
+    pa_assert_se(dbus_connection_send(conn, reply, NULL));
+
+    dbus_message_unref(reply);
+}
+
+pa_dbusiface_memstats *pa_dbusiface_memstats_new(pa_core *core, const char *path_prefix) {
+    pa_dbusiface_memstats *m;
+
+    pa_assert(core);
+    pa_assert(path_prefix);
+
+    m = pa_xnew(pa_dbusiface_memstats, 1);
+    m->core = pa_core_ref(core);
+    m->path = pa_sprintf_malloc("%s/%s", path_prefix, OBJECT_NAME);
+    m->dbus_protocol = pa_dbus_protocol_get(core);
+
+    pa_assert_se(pa_dbus_protocol_add_interface(m->dbus_protocol, m->path, &memstats_interface_info, m) >= 0);
+
+    return m;
+}
+
+void pa_dbusiface_memstats_free(pa_dbusiface_memstats *m) {
+    pa_assert(m);
+
+    pa_assert_se(pa_dbus_protocol_remove_interface(m->dbus_protocol, m->path, memstats_interface_info.name) >= 0);
+
+    pa_xfree(m->path);
+
+    pa_dbus_protocol_unref(m->dbus_protocol);
+    pa_core_unref(m->core);
+
+    pa_xfree(m);
+}
+
+const char *pa_dbusiface_memstats_get_path(pa_dbusiface_memstats *m) {
+    pa_assert(m);
+
+    return m->path;
+}

src/modules/dbus/iface-memstats.h

@@ -0,0 +1,44 @@
+#ifndef foodbusifacememstatshfoo
+#define foodbusifacememstatshfoo
+
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2009 Tanu Kaskinen
+
+  PulseAudio 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.
+
+  PulseAudio 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
+  General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with PulseAudio; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+/* This object implements the D-Bus interface org.PulseAudio.Core1.Memstats.
+ *
+ * See http://pulseaudio.org/wiki/DBusInterface for the Memstats interface
+ * documentation.
+ */
+
+#include <pulsecore/core.h>
+
+#include "iface-core.h"
+
+#define PA_DBUSIFACE_MEMSTATS_INTERFACE PA_DBUSIFACE_CORE_INTERFACE ".Memstats"
+
+typedef struct pa_dbusiface_memstats pa_dbusiface_memstats;
+
+pa_dbusiface_memstats *pa_dbusiface_memstats_new(pa_core *core, const char *path_prefix);
+void pa_dbusiface_memstats_free(pa_dbusiface_memstats *m);
+
+const char *pa_dbusiface_memstats_get_path(pa_dbusiface_memstats *m);
+
+#endif