[Asterisk-code-review] media index: Improve startup. (asterisk[13])
Corey Farrell
asteriskteam at digium.com
Wed Dec 6 23:35:53 CST 2017
Corey Farrell has uploaded this change for review. ( https://gerrit.asterisk.org/7463
Change subject: media_index: Improve startup.
......................................................................
media_index: Improve startup.
This eliminates some wasteful operations in media_index startup.
* Replace statically set string-fields with char[0].
* Eliminate pointless RAII_VAR's.
* alloc_variant: Avoid pointless ao2_find on new info->variant.
* Stop trying find_variant before alloc_variant.
* process_media_file: replace ast_str with ast_asprintf. This avoids
reallocation of file_id_str.
Overall sounds_index.c is about 27% of Asterisk startup time when using
sample configs. This patch reduces it to 20%. This is a half-fix. The
real problem is that the media_index is regenerated repeatedly - 68
times in my test.
Change-Id: Ia50b752f8efb356f852b05c4be495a6631af8652
---
M main/media_index.c
1 file changed, 58 insertions(+), 63 deletions(-)
git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/63/7463/1
diff --git a/main/media_index.c b/main/media_index.c
index 3e38245..60bdfe3 100644
--- a/main/media_index.c
+++ b/main/media_index.c
@@ -45,10 +45,10 @@
/*! \brief Structure to hold a list of the format variations for a media file for a specific variant */
struct media_variant {
AST_DECLARE_STRING_FIELDS(
- AST_STRING_FIELD(variant); /*!< The variant this media is available in */
AST_STRING_FIELD(description); /*!< The description of the media */
);
struct ast_format_cap *formats; /*!< The formats this media is available in for this variant */
+ char variant[0]; /*!< The variant this media is available in */
};
static void media_variant_destroy(void *obj)
@@ -61,20 +61,23 @@
static struct media_variant *media_variant_alloc(const char *variant_str)
{
- RAII_VAR(struct media_variant *, variant, ao2_alloc(sizeof(*variant), media_variant_destroy), ao2_cleanup);
+ size_t str_sz = strlen(variant_str) + 1;
+ struct media_variant *variant;
- if (!variant || ast_string_field_init(variant, 8)) {
+ variant = ao2_alloc(sizeof(*variant) + str_sz, media_variant_destroy);
+ if (!variant) {
return NULL;
}
+
+ memcpy(variant->variant, variant_str, str_sz);
variant->formats = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT);
- if (!variant->formats) {
+ if (!variant->formats || ast_string_field_init(variant, 8)) {
+ ao2_ref(variant, -1);
+
return NULL;
}
- ast_string_field_set(variant, variant, variant_str);
-
- ao2_ref(variant, 1);
return variant;
}
@@ -93,37 +96,35 @@
/*! \brief Structure to hold information about a media file */
struct media_info {
- AST_DECLARE_STRING_FIELDS(
- AST_STRING_FIELD(name); /*!< The file name of the media */
- );
- struct ao2_container *variants; /*!< The variants for which this media is available */
+ struct ao2_container *variants; /*!< The variants for which this media is available */
+ char name[0]; /*!< The file name of the media */
};
static void media_info_destroy(void *obj)
{
struct media_info *info = obj;
- ast_string_field_free_memory(info);
ao2_cleanup(info->variants);
- info->variants = NULL;
}
static struct media_info *media_info_alloc(const char *name)
{
- RAII_VAR(struct media_info *, info, ao2_alloc(sizeof(*info), media_info_destroy), ao2_cleanup);
+ size_t name_sz = strlen(name) + 1;
+ struct media_info *info = ao2_alloc(sizeof(*info) + name_sz, media_info_destroy);
- if (!info || ast_string_field_init(info, 128)) {
+ if (!info) {
return NULL;
}
+
+ memcpy(info->name, name, name_sz);
info->variants = ao2_container_alloc(VARIANT_BUCKETS, media_variant_hash, media_variant_cmp);
if (!info->variants) {
+ ao2_ref(info, -1);
+
return NULL;
}
- ast_string_field_set(info, name, name);
-
- ao2_ref(info, 1);
return info;
}
@@ -141,38 +142,37 @@
}
struct ast_media_index {
- AST_DECLARE_STRING_FIELDS(
- AST_STRING_FIELD(base_dir); /*!< Base directory for indexing */
- );
struct ao2_container *index; /*!< The index of media that has requested */
struct ao2_container *media_list_cache; /*!< Cache of filenames to prevent them from being regenerated so often */
+ char base_dir[0]; /*!< Base directory for indexing */
};
static void media_index_dtor(void *obj)
{
struct ast_media_index *index = obj;
+
ao2_cleanup(index->index);
- index->index = NULL;
ao2_cleanup(index->media_list_cache);
- index->media_list_cache = NULL;
- ast_string_field_free_memory(index);
}
struct ast_media_index *ast_media_index_create(const char *base_dir)
{
- RAII_VAR(struct ast_media_index *, index, ao2_alloc(sizeof(*index), media_index_dtor), ao2_cleanup);
- if (!index || ast_string_field_init(index, 64)) {
+ size_t base_dir_sz = strlen(base_dir) + 1;
+ struct ast_media_index *index = ao2_alloc(sizeof(*index) + base_dir_sz, media_index_dtor);
+
+ if (!index) {
return NULL;
}
- ast_string_field_set(index, base_dir, base_dir);
+ memcpy(index->base_dir, base_dir, base_dir_sz);
index->index = ao2_container_alloc(INDEX_BUCKETS, media_info_hash, media_info_cmp);
if (!index->index) {
+ ao2_ref(index, -1);
+
return NULL;
}
- ao2_ref(index, +1);
return index;
}
@@ -191,8 +191,8 @@
/*! \brief create the appropriate media_variant and any necessary structures */
static struct media_variant *alloc_variant(struct ast_media_index *index, const char *filename, const char *variant_str)
{
- RAII_VAR(struct media_info *, info, NULL, ao2_cleanup);
- RAII_VAR(struct media_variant *, variant, NULL, ao2_cleanup);
+ struct media_info *info;
+ struct media_variant *variant = NULL;
info = ao2_find(index->index, filename, OBJ_KEY);
if (!info) {
@@ -204,21 +204,21 @@
}
ao2_link(index->index, info);
+ } else {
+ variant = ao2_find(info->variants, variant_str, OBJ_KEY);
}
- variant = ao2_find(info->variants, variant_str, OBJ_KEY);
if (!variant) {
/* This is the first time the index has seen this variant for
* this filename, allocate and link */
variant = media_variant_alloc(variant_str);
- if (!variant) {
- return NULL;
+ if (variant) {
+ ao2_link(info->variants, variant);
}
-
- ao2_link(info->variants, variant);
}
- ao2_ref(variant, +1);
+ ao2_ref(info, -1);
+
return variant;
}
@@ -324,15 +324,16 @@
/*! \brief Update an index with new format/variant information */
static int update_file_format_info(struct ast_media_index *index, const char *filename, const char *variant_str, struct ast_format *file_format)
{
- RAII_VAR(struct media_variant *, variant, find_variant(index, filename, variant_str), ao2_cleanup);
+ struct media_variant *variant;
+
+ variant = alloc_variant(index, filename, variant_str);
if (!variant) {
- variant = alloc_variant(index, filename, variant_str);
- if (!variant) {
- return -1;
- }
+ return -1;
}
ast_format_cap_append(variant->formats, file_format, 0);
+ ao2_ref(variant, -1);
+
return 0;
}
@@ -341,7 +342,8 @@
{
struct ast_format *file_format;
const char *file_identifier = filename_stripped;
- RAII_VAR(struct ast_str *, file_id_str, NULL, ast_free);
+ char *file_id_str = NULL;
+ int res;
file_format = ast_get_format_for_file_ext(ext);
if (!file_format) {
@@ -351,19 +353,17 @@
/* handle updating the file information */
if (subdir) {
- file_id_str = ast_str_create(64);
- if (!file_id_str) {
+ if (ast_asprintf(&file_id_str, "%s/%s", subdir, filename_stripped) == -1) {
return -1;
}
- ast_str_set(&file_id_str, 0, "%s/%s", subdir, filename_stripped);
- file_identifier = ast_str_buffer(file_id_str);
+ file_identifier = file_id_str;
}
- if (update_file_format_info(index, file_identifier, variant, file_format)) {
- return -1;
- }
- return 0;
+ res = update_file_format_info(index, file_identifier, variant, file_format);
+ ast_free(file_id_str);
+
+ return res;
}
/*!
@@ -443,20 +443,18 @@
} else {
/* if there's text in cumulative_description, archive it and start anew */
if (file_id_persist && !ast_strlen_zero(ast_str_buffer(cumulative_description))) {
- RAII_VAR(struct media_variant *, variant, NULL, ao2_cleanup);
+ struct media_variant *variant;
- variant = find_variant(index, file_id_persist, variant_str);
+ variant = alloc_variant(index, file_id_persist, variant_str);
if (!variant) {
- variant = alloc_variant(index, file_id_persist, variant_str);
- if (!variant) {
- res = -1;
- break;
- }
+ res = -1;
+ break;
}
ast_string_field_set(variant, description, ast_str_buffer(cumulative_description));
ast_str_reset(cumulative_description);
+ ao2_ref(variant, -1);
}
ast_free(file_id_persist);
@@ -468,15 +466,12 @@
/* handle the last one */
if (file_id_persist && !ast_strlen_zero(ast_str_buffer(cumulative_description))) {
- RAII_VAR(struct media_variant *, variant, NULL, ao2_cleanup);
+ struct media_variant *variant;
- variant = find_variant(index, file_id_persist, variant_str);
- if (!variant) {
- variant = alloc_variant(index, file_id_persist, variant_str);
- }
-
+ variant = alloc_variant(index, file_id_persist, variant_str);
if (variant) {
ast_string_field_set(variant, description, ast_str_buffer(cumulative_description));
+ ao2_ref(variant, -1);
} else {
res = -1;
}
--
To view, visit https://gerrit.asterisk.org/7463
To unsubscribe, visit https://gerrit.asterisk.org/settings
Gerrit-Project: asterisk
Gerrit-Branch: 13
Gerrit-MessageType: newchange
Gerrit-Change-Id: Ia50b752f8efb356f852b05c4be495a6631af8652
Gerrit-Change-Number: 7463
Gerrit-PatchSet: 1
Gerrit-Owner: Corey Farrell <git at cfware.com>
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