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-rw-r--r--bench/util.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/bench/util.c b/bench/util.c
new file mode 100644
index 0000000..6130af5
--- /dev/null
+++ b/bench/util.c
@@ -0,0 +1,39 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+
+#include "util.h"
+
+/* read file named FILENAME into an array of *len bytes,
+ returning NULL on error */
+uint8_t *readfile(const char *filename, size_t *len)
+{
+ *len = 0;
+ struct stat st;
+ if (0 != stat(filename, &st)) return NULL;
+ *len = st.st_size;
+ FILE *f = fopen(filename, "r");
+ if (!f) return NULL;
+ uint8_t *s = (uint8_t *) malloc(sizeof(uint8_t) * *len);
+ if (!s) return NULL;
+ if (fread(s, 1, *len, f) != *len) {
+ free(s);
+ s = NULL;
+ }
+ fclose(f);
+ return s;
+}
+
+mytime gettime(void) {
+ mytime t;
+ gettimeofday(&t, NULL);
+ return t;
+}
+
+/* time difference in seconds */
+double elapsed(mytime t1, mytime t0)
+{
+ return (double)(t1.tv_sec - t0.tv_sec) +
+ (double)(t1.tv_usec - t0.tv_usec) * 1.0E-6;
+}
+