1 files changed, 88 insertions, 0 deletions
diff --git a/modules/benchmark/zlib.c b/modules/benchmark/zlib.c
new file mode 100644
index 00000000..2045969f
--- /dev/null
+++ b/modules/benchmark/zlib.c
@@ -0,0 +1,88 @@
+/*
+ *    HardInfo - Displays System Information
+ *    Copyright (C) 2017 L. A. F. Pereira <l@tia.mat.br>
+ *
+ *    This program is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation, version 2 or later.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program; if not, write to the Free Software
+ *    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include <glib.h>
+#include <stdlib.h>
+#include <zlib.h>
+
+#include "benchmark.h"
+
+/* zip/unzip 256KB blocks for 7 seconds
+ * result is number of full completions / 100 */
+
+/* if anything changes in this block, increment revision */
+#define BENCH_REVISION 3
+#define BENCH_DATA_SIZE 262144
+#define BENCH_DATA_MD5 "3753b649c4fa9ea4576fc8f89a773de2"
+#define CRUNCH_TIME 7
+#define VERIFY_RESULT 1
+
+static unsigned int zlib_errors = 0;
+
+static gpointer zlib_for(void *in_data, gint thread_number) {
+    char *compressed;
+    uLong bound = compressBound(BENCH_DATA_SIZE);
+    unsigned int i;
+
+    compressed = malloc(bound);
+    if (!compressed)
+        return NULL;
+
+    char uncompressed[BENCH_DATA_SIZE];
+    uLong compressedBound = bound;
+    uLong destBound = sizeof(uncompressed);
+
+    compress(compressed, &compressedBound, in_data, BENCH_DATA_SIZE);
+    uncompress(uncompressed, &destBound, compressed, compressedBound);
+    if (VERIFY_RESULT) {
+        int cr = memcmp(in_data, uncompressed, BENCH_DATA_SIZE);
+        if (!!cr) {
+            zlib_errors++;
+            bench_msg("zlib error: uncompressed != original");
+        }
+    }
+
+    free(compressed);
+
+    return NULL;
+}
+
+void
+benchmark_zlib(void)
+{
+    bench_value r = EMPTY_BENCH_VALUE;
+    gchar *test_data = get_test_data(BENCH_DATA_SIZE);
+    if (!test_data)
+        return;
+
+    shell_view_set_enabled(FALSE);
+    shell_status_update("Running Zlib benchmark...");
+
+    gchar *d = md5_digest_str(test_data, BENCH_DATA_SIZE);
+    if (!SEQ(d, BENCH_DATA_MD5))
+        bench_msg("test data has different md5sum: expected %s, actual %s", BENCH_DATA_MD5, d);
+
+    r = benchmark_crunch_for(CRUNCH_TIME, 0, zlib_for, test_data);
+    r.result /= 100;
+    r.revision = BENCH_REVISION;
+    snprintf(r.extra, 255, "zlib %s (built against: %s), d:%s, e:%d", zlib_version, ZLIB_VERSION, d, zlib_errors);
+    bench_results[BENCHMARK_ZLIB] = r;
+
+    g_free(test_data);
+    g_free(d);
+}