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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-10-07 13:54:24 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-10-07 13:54:24 +0200
commit1fad07ce86fc2a506c59501d7fb7c7d7481525f6 (patch)
tree6ba41c514e2ddc692cb95a0fb2070dd222897c7c /lib/common/statistics.c
parent5597dca9c6053cd19104e18d88edb199b32e3743 (diff)
Rename libsqfshelper to libcommon
That is IMO less confusing and express what it is (i.e. what it has become) more clearly, i.e. common code shared by the utilities. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'lib/common/statistics.c')
-rw-r--r--lib/common/statistics.c88
1 files changed, 88 insertions, 0 deletions
diff --git a/lib/common/statistics.c b/lib/common/statistics.c
new file mode 100644
index 0000000..a209461
--- /dev/null
+++ b/lib/common/statistics.c
@@ -0,0 +1,88 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * statistics.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "common.h"
+
+#include <stdio.h>
+
+static void post_block_write(void *user, const sqfs_block_t *block,
+ sqfs_file_t *file)
+{
+ data_writer_stats_t *stats = user;
+ (void)file;
+
+ if (block->size == 0)
+ return;
+
+ if (block->flags & SQFS_BLK_FRAGMENT_BLOCK) {
+ stats->frag_blocks_written += 1;
+ } else {
+ stats->blocks_written += 1;
+ }
+
+ stats->bytes_written += block->size;
+}
+
+static void pre_fragment_store(void *user, sqfs_block_t *block)
+{
+ data_writer_stats_t *stats = user;
+ (void)block;
+
+ stats->frag_count += 1;
+}
+
+static void notify_blocks_erased(void *user, size_t count, sqfs_u64 bytes)
+{
+ data_writer_stats_t *stats = user;
+
+ stats->bytes_written -= bytes;
+ stats->blocks_written -= count;
+ stats->duplicate_blocks += count;
+}
+
+static void notify_fragment_discard(void *user, const sqfs_block_t *block)
+{
+ data_writer_stats_t *stats = user;
+ (void)block;
+
+ stats->frag_dup += 1;
+}
+
+static const sqfs_block_hooks_t hooks = {
+ .size = sizeof(hooks),
+ .post_block_write = post_block_write,
+ .pre_fragment_store = pre_fragment_store,
+ .notify_blocks_erased = notify_blocks_erased,
+ .notify_fragment_discard = notify_fragment_discard,
+};
+
+void register_stat_hooks(sqfs_data_writer_t *data, data_writer_stats_t *stats)
+{
+ sqfs_data_writer_set_hooks(data, stats, &hooks);
+}
+
+void sqfs_print_statistics(sqfs_super_t *super, data_writer_stats_t *stats)
+{
+ size_t ratio;
+
+ if (stats->bytes_written > 0) {
+ ratio = (100 * stats->bytes_written) / stats->bytes_read;
+ } else {
+ ratio = 100;
+ }
+
+ fputs("---------------------------------------------------\n", stdout);
+ printf("Input files processed: %zu\n", stats->file_count);
+ printf("Data blocks actually written: %zu\n", stats->blocks_written);
+ printf("Fragment blocks written: %zu\n", stats->frag_blocks_written);
+ printf("Duplicate data blocks omitted: %zu\n", stats->duplicate_blocks);
+ printf("Sparse blocks omitted: %zu\n", stats->sparse_blocks);
+ printf("Fragments actually written: %zu\n", stats->frag_count);
+ printf("Duplicated fragments omitted: %zu\n", stats->frag_dup);
+ printf("Total number of inodes: %u\n", super->inode_count);
+ printf("Number of unique group/user IDs: %u\n", super->id_count);
+ printf("Data compression ratio: %zu%%\n", ratio);
+}