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fix spelling in low level cache code

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This commit is contained in:
Vincent Sanders 2016-11-20 15:38:14 +00:00
parent 9ff13d64c4
commit b3042f6c1f
1 changed files with 47 additions and 47 deletions
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94
content/llcache.c
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@ -22,7 +22,7 @@
* Low-level resource cache implementation
*
* This is the implementation of the low level cache. This cache
* stores source objects in memory and may use a persistant backing
* stores source objects in memory and may use a persistent backing
* store to extend their lifetime.
*
* \todo fix writeout conditions and ordering.
@ -201,8 +201,8 @@ struct llcache_object {
llcache_header *headers; /**< Fetch headers */
size_t num_headers; /**< Number of fetch headers */
/* Instrumentation. These elemnts are strictly for information
* to improve the cache performance and to provide performace
/* Instrumentation. These elements are strictly for information
* to improve the cache performance and to provide performance
* metrics. The values are non-authorative and must not be used to
* determine object lifetime etc.
*/
@ -268,7 +268,7 @@ struct llcache_s {
uint64_t total_written;
/**
* Total nuber of miliseconds taken to write to backing store.
* Total number of milliseconds taken to write to backing store.
*/
uint64_t total_elapsed;
@ -804,7 +804,7 @@ static nserror llcache_fetch_process_header(llcache_object *object,
*
* sets up headers and attempts to start an actual fetch from the
* fetchers system updating the llcache object with the new fetch on
* sucessful start.
* successful start.
*
* \pre The fetch parameters in object->fetch must be populated
*
@ -876,7 +876,7 @@ static nserror llcache_object_refetch(llcache_object *object)
/* Reset fetch state */
object->fetch.state = LLCACHE_FETCH_INIT;
LLCACHE_LOG("Refetching %p", object);
LLCACHE_LOG("Re-fetching %p", object);
/* Kick off fetch */
res = fetch_start(object->url,
@ -1173,27 +1173,27 @@ llcache_object_remove_from_list(llcache_object *object, llcache_object **list)
}
/**
* Retrieve source data for an object from persistant store if necessary.
* Retrieve source data for an object from persistent store if necessary.
*
* If an objects source data has been placed in the persistant store
* and the in memory copy released this will attempt to retrive the
* If an objects source data has been placed in the persistent store
* and the in memory copy released this will attempt to retrieve the
* source data.
*
* \param object the object to operate on.
* \return apropriate error code.
* \return appropriate error code.
*/
static nserror llcache_persist_retrieve(llcache_object *object)
{
/* ensure the source data is present if necessary */
if ((object->source_data != NULL) ||
(object->store_state != LLCACHE_STATE_DISC)) {
/* source data does not require retriving from
* persistant store.
/* source data does not require retrieving from
* persistent store.
*/
return NSERROR_OK;
}
/* Source data for the object may be in the persiatant store */
/* Source data for the object may be in the persistent store */
return guit->llcache->fetch(object->url,
BACKING_STORE_NONE,
&object->source_data,
@ -1205,7 +1205,7 @@ static nserror llcache_persist_retrieve(llcache_object *object)
*
* The metadata includes object headers.
*
* \param object The cache object to serialise teh metadata of.
* \param object The cache object to serialise the metadata of.
* \param data_out Where the serialised buffer will be placed.
* \param datasize_out The size of the serialised data.
* \return NSERROR_OK on success with \a data_out and \a datasize_out
@ -1347,15 +1347,15 @@ operror:
/**
* Deserialisation of an objects metadata.
*
* Attempt to retrive and deserialise the metadata for an object from
* Attempt to retrieve and deserialise the metadata for an object from
* the backing store.
*
* This must only update object if it is sucessful otherwise difficult
* This must only update object if it is successful otherwise difficult
* to debug crashes happen later by using bad leftover object state.
*
* \param object The object to retrieve the metadata for.
* \return NSERROR_OK if the metatdata was retrived and deserialised
* or error code if url is not in persistant storage or in
* \return NSERROR_OK if the metatdata was retrieved and deserialised
* or error code if URL is not in persistent storage or in
* event of deserialisation error.
*/
static nserror
@ -1376,7 +1376,7 @@ llcache_process_metadata(llcache_object *object)
size_t num_headers;
size_t hloop;
LOG("Retriving metadata");
LOG("Retrieving metadata");
/* attempt to retrieve object metadata from the backing store */
res = guit->llcache->fetch(object->url,
@ -1387,7 +1387,7 @@ llcache_process_metadata(llcache_object *object)
return res;
}
LOG("Processing retrived data");
LOG("Processing retrieved data");
/* metadata line 1 is the url the metadata referrs to */
line = 1;
@ -1405,7 +1405,7 @@ llcache_process_metadata(llcache_object *object)
if (nsurl_compare(object->url, metadataurl, NSURL_COMPLETE) != true) {
/* backing store returned the wrong object for the
* request. This may occour if the backing store had
* request. This may occur if the backing store had
* a collision in its storage method. We cope with this
* by simply skipping caching of this object.
*/
@ -1511,14 +1511,14 @@ format_error:
}
/**
* Attempt to retrieve an object from persistant storage.
* Attempt to retrieve an object from persistent storage.
*
* \param object The object to populate from persistant store.
* \param object The object to populate from persistent store.
* \param flags Fetch flags.
* \param referer The referring url.
* \param post Post data for fetch.
* \param redirect_count how many times this fetch has been redirected.
* \return NSERROR_OK if the object was sucessfully retrived from the
* \return NSERROR_OK if the object was successfully retrieved from the
* cache else appropriate error code.
*/
static nserror
@ -1572,7 +1572,7 @@ llcache_object_fetch_persistant(llcache_object *object,
* \param referer Referring URL, or NULL if none
* \param post POST data, or NULL for a GET request
* \param redirect_count Number of redirects followed so far
* \param result Pointer to location to recieve retrieved object
* \param result Pointer to location to receive retrieved object
* \return NSERROR_OK on success, appropriate error otherwise
*/
static nserror
@ -1602,7 +1602,7 @@ llcache_object_retrieve_from_cache(nsurl *url,
}
/* No viable object found in cache create one and attempt to
* pull from persistant store.
* pull from persistent store.
*/
if (newest == NULL) {
LLCACHE_LOG("No viable object found in llcache");
@ -1611,12 +1611,12 @@ llcache_object_retrieve_from_cache(nsurl *url,
if (error != NSERROR_OK)
return error;
/* attempt to retrieve object from persistant store */
/* attempt to retrieve object from persistent store */
error = llcache_object_fetch_persistant(obj, flags, referer, post, redirect_count);
if (error == NSERROR_OK) {
LLCACHE_LOG("retrived object from persistant store");
LLCACHE_LOG("retrieved object from persistent store");
/* set newest object from persistant store which
/* set newest object from persistent store which
* will cause the normal object handling to be used.
*/
newest = obj;
@ -1625,7 +1625,7 @@ llcache_object_retrieve_from_cache(nsurl *url,
llcache_object_add_to_list(obj, &llcache->cached_objects);
}
/* else no object found and unretrivable from cache,
/* else no object found and irretrievable from cache,
* fall through with newest unset to start fetch
*/
}
@ -1641,19 +1641,19 @@ llcache_object_retrieve_from_cache(nsurl *url,
/* ensure the source data is present */
error = llcache_persist_retrieve(newest);
if (error == NSERROR_OK) {
/* source data was sucessfully retrived from
* persistant store
/* source data was successfully retrieved from
* persistent store
*/
*result = newest;
return NSERROR_OK;
}
/* retrival of source data from persistant store
/* retrieval of source data from persistent store
* failed, destroy cache object and fall though to
* cache miss to re-fetch
*/
LLCACHE_LOG("Persistant retrival failed for %p", newest);
LLCACHE_LOG("Persistent retrieval failed for %p", newest);
llcache_object_remove_from_list(newest, &llcache->cached_objects);
llcache_object_destroy(newest);
@ -1704,9 +1704,9 @@ llcache_object_retrieve_from_cache(nsurl *url,
return NSERROR_OK;
}
LLCACHE_LOG("Persistant retrival failed for %p", newest);
LLCACHE_LOG("Persistent retrieval failed for %p", newest);
/* retrival of source data from persistant store
/* retrieval of source data from persistent store
* failed, destroy cache object and fall though to
* cache miss to re-retch
*/
@ -1743,7 +1743,7 @@ llcache_object_retrieve_from_cache(nsurl *url,
* \param referer Referring URL, or NULL if none
* \param post POST data, or NULL for a GET request
* \param redirect_count Number of redirects followed so far
* \param result Pointer to location to recieve retrieved object
* \param result Pointer to location to receive retrieved object
* \return NSERROR_OK on success, appropriate error otherwise
*/
static nserror
@ -2372,7 +2372,7 @@ build_candidate_list(struct llcache_object ***lst_out, int *lst_len_out)
/* cacehable objects with no pending fetches, not
* already on disc and with sufficient lifetime to
* make disc cache worthwile
* make disc cache worthwhile
*/
if ((object->candidate_count == 0) &&
(object->fetch.fetch == NULL) &&
@ -2526,20 +2526,20 @@ static void llcache_persist(void *p)
ret = build_candidate_list(&lst, &lst_count);
if (ret != NSERROR_OK) {
LLCACHE_LOG("Unable to construct candidate list for persisatnt writeout");
LLCACHE_LOG("Unable to construct candidate list for persistent writeout");
return;
}
write_limit = (llcache->maximum_bandwidth * llcache->time_quantum) / 1000;
/* obtained a candidate list, make each object persistant in turn */
/* obtained a candidate list, make each object persistent in turn */
for (idx = 0; idx < lst_count; idx++) {
ret = write_backing_store(lst[idx], &written, &elapsed);
if (ret != NSERROR_OK) {
continue;
}
/* sucessfully wrote object to backing store */
/* successfully wrote object to backing store */
total_written += written;
total_elapsed += elapsed;
total_bandwidth = (total_written * 1000) / total_elapsed;
@ -3138,7 +3138,7 @@ llcache_object_snapshot(llcache_object *object, llcache_object **snapshot)
/**
* total ram usage of object
*
* \param object The object to caclulate the total RAM usage of.
* \param object The object to calculate the total RAM usage of.
* \return The total RAM usage in bytes.
*/
static inline uint32_t
@ -3253,7 +3253,7 @@ void llcache_clean(bool purge)
}
/* if the cache limit is exceeded try to make some objects
* persistant so their RAM can be reclaimed in the next
* persistent so their RAM can be reclaimed in the next
* step
*/
if (limit < llcache_size) {
@ -3261,7 +3261,7 @@ void llcache_clean(bool purge)
}
/* Source data of fresh cacheable objects with no users, no
* pending fetches and pushed to persistant store while the
* pending fetches and pushed to persistent store while the
* cache exceeds the configured size.
*/
for (object = llcache->cached_objects;
@ -3286,8 +3286,8 @@ void llcache_clean(bool purge)
}
/* Fresh cacheable objects with no users, no pending fetches
* and pushed to persistant store while the cache exceeds
* the configured size. Efectively just the llcache object metadata.
* and pushed to persistent store while the cache exceeds
* the configured size. Effectively just the llcache object metadata.
*/
for (object = llcache->cached_objects;
((limit < llcache_size) && (object != NULL));
@ -3317,7 +3317,7 @@ void llcache_clean(bool purge)
/* Fresh cacheable objects with no users or pending fetches
* while the cache exceeds the configured size. These are the
* most valuble objects as replacing them is a full network
* most valuable objects as replacing them is a full network
* fetch
*/
for (object = llcache->cached_objects;