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localize window memory usage accounting
This is to help threadification of delta searching. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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@ -78,7 +78,6 @@ static unsigned long delta_cache_size = 0;
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static unsigned long max_delta_cache_size = 0;
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static unsigned long cache_max_small_delta_size = 1000;
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static unsigned long window_memory_usage = 0;
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static unsigned long window_memory_limit = 0;
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/*
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@ -1300,7 +1299,7 @@ static int delta_cacheable(unsigned long src_size, unsigned long trg_size,
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* one.
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*/
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static int try_delta(struct unpacked *trg, struct unpacked *src,
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unsigned max_depth)
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unsigned max_depth, unsigned long *mem_usage)
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{
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struct object_entry *trg_entry = trg->entry;
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struct object_entry *src_entry = src->entry;
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@ -1356,7 +1355,7 @@ static int try_delta(struct unpacked *trg, struct unpacked *src,
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if (sz != trg_size)
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die("object %s inconsistent object length (%lu vs %lu)",
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sha1_to_hex(trg_entry->idx.sha1), sz, trg_size);
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window_memory_usage += sz;
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*mem_usage += sz;
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}
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if (!src->data) {
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src->data = read_sha1_file(src_entry->idx.sha1, &type, &sz);
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@ -1366,7 +1365,7 @@ static int try_delta(struct unpacked *trg, struct unpacked *src,
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if (sz != src_size)
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die("object %s inconsistent object length (%lu vs %lu)",
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sha1_to_hex(src_entry->idx.sha1), sz, src_size);
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window_memory_usage += sz;
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*mem_usage += sz;
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}
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if (!src->index) {
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src->index = create_delta_index(src->data, src_size);
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@ -1376,7 +1375,7 @@ static int try_delta(struct unpacked *trg, struct unpacked *src,
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warning("suboptimal pack - out of memory");
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return 0;
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}
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window_memory_usage += sizeof_delta_index(src->index);
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*mem_usage += sizeof_delta_index(src->index);
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}
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delta_buf = create_delta(src->index, trg->data, trg_size, &delta_size, max_size);
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@ -1423,18 +1422,19 @@ static unsigned int check_delta_limit(struct object_entry *me, unsigned int n)
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return m;
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}
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static void free_unpacked(struct unpacked *n)
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static unsigned long free_unpacked(struct unpacked *n)
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{
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window_memory_usage -= sizeof_delta_index(n->index);
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unsigned long freed_mem = sizeof_delta_index(n->index);
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free_delta_index(n->index);
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n->index = NULL;
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if (n->data) {
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freed_mem += n->entry->size;
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free(n->data);
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n->data = NULL;
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window_memory_usage -= n->entry->size;
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}
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n->entry = NULL;
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n->depth = 0;
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return freed_mem;
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}
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static void find_deltas(struct object_entry **list, unsigned list_size,
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@ -1443,7 +1443,7 @@ static void find_deltas(struct object_entry **list, unsigned list_size,
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uint32_t i = list_size, idx = 0, count = 0, processed = 0;
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unsigned int array_size = window * sizeof(struct unpacked);
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struct unpacked *array;
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int max_depth;
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unsigned long mem_usage = 0;
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array = xmalloc(array_size);
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memset(array, 0, array_size);
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@ -1453,16 +1453,16 @@ static void find_deltas(struct object_entry **list, unsigned list_size,
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do {
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struct object_entry *entry = list[--i];
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struct unpacked *n = array + idx;
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int j, best_base = -1;
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int j, max_depth, best_base = -1;
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free_unpacked(n);
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mem_usage -= free_unpacked(n);
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n->entry = entry;
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while (window_memory_limit &&
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window_memory_usage > window_memory_limit &&
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mem_usage > window_memory_limit &&
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count > 1) {
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uint32_t tail = (idx + window - count) % window;
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free_unpacked(array + tail);
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mem_usage -= free_unpacked(array + tail);
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count--;
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}
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@ -1497,7 +1497,7 @@ static void find_deltas(struct object_entry **list, unsigned list_size,
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m = array + other_idx;
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if (!m->entry)
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break;
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ret = try_delta(n, m, max_depth);
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ret = try_delta(n, m, max_depth, &mem_usage);
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if (ret < 0)
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break;
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else if (ret > 0)
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