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| author |  Nicolas Pitre <nico@cam.org> | 2007-09-10 11:10:11 -0400 |
|---|---|---|
| committer |  Junio C Hamano <gitster@pobox.com> | 2007-09-12 12:56:09 -0700 |
| commit | 3c70183918d97eda06ae847cd7432fd23257caea (patch) | |
| tree | d09a515fa8d6a450ddf8f3bfd9878aac6af407db | |
| parent | threaded delta search: add pack.threads config variable (diff) | |
| download | tgif-3c70183918d97eda06ae847cd7432fd23257caea.tar.xz | |
threaded delta search: proper locking for cache accounting
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
| -rw-r--r-- | builtin-pack-objects.c | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/builtin-pack-objects.c b/builtin-pack-objects.c index e091bcbda9..b126fc8e72 100644 --- a/builtin-pack-objects.c +++ b/builtin-pack-objects.c @@ -1301,6 +1301,10 @@ static pthread_mutex_t read_mutex = PTHREAD_MUTEX_INITIALIZER; #define read_lock() pthread_mutex_lock(&read_mutex) #define read_unlock() pthread_mutex_unlock(&read_mutex) +static pthread_mutex_t cache_mutex = PTHREAD_MUTEX_INITIALIZER; +#define cache_lock() pthread_mutex_lock(&cache_mutex) +#define cache_unlock() pthread_mutex_unlock(&cache_mutex) + static pthread_mutex_t progress_mutex = PTHREAD_MUTEX_INITIALIZER; #define progress_lock() pthread_mutex_lock(&progress_mutex) #define progress_unlock() pthread_mutex_unlock(&progress_mutex) @@ -1309,6 +1313,8 @@ static pthread_mutex_t progress_mutex = PTHREAD_MUTEX_INITIALIZER; #define read_lock() 0 #define read_unlock() 0 +#define cache_lock() 0 +#define cache_unlock() 0 #define progress_lock() 0 #define progress_unlock() 0 @@ -1423,17 +1429,27 @@ static int try_delta(struct unpacked *trg, struct unpacked *src, trg_entry->delta_size = delta_size; trg->depth = src->depth + 1; + /* + * Handle memory allocation outside of the cache + * accounting lock. Compiler will optimize the strangeness + * away when THREADED_DELTA_SEARCH is not defined. + */ + if (trg_entry->delta_data) + free(trg_entry->delta_data); + cache_lock(); if (trg_entry->delta_data) { delta_cache_size -= trg_entry->delta_size; - free(trg_entry->delta_data); trg_entry->delta_data = NULL; } - if (delta_cacheable(src_size, trg_size, delta_size)) { - trg_entry->delta_data = xrealloc(delta_buf, delta_size); delta_cache_size += trg_entry->delta_size; - } else + cache_unlock(); + trg_entry->delta_data = xrealloc(delta_buf, delta_size); + } else { + cache_unlock(); free(delta_buf); + } + return 1; } |