lockfile: replace random() by rand()

On Windows, we do not have functions srandom() and random(). Use srand()
and rand(). These functions produce random numbers of lesser quality,
but for the purpose (a retry time-out) they are still good enough.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Reviewed-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/lockfile.c b/lockfile.c
index 30e65e9d22566ada51cffb36642e0a27ea4507dc..738f20248f660603e11f550bfdcde4ccfdae575e 100644 (file)
--- a/lockfile.c
+++ b/lockfile.c
@@ -191,7 +191,7 @@ static int lock_file_timeout(struct lock_file *lk, const char *path,
                return lock_file(lk, path, flags);
 
        if (!random_initialized) {
                return lock_file(lk, path, flags);
 
        if (!random_initialized) {

-               srandom((unsigned int)getpid());
+               srand((unsigned int)getpid());

                random_initialized = 1;
        }
 
                random_initialized = 1;
        }
 


@@ -218,7 +218,7 @@ static int lock_file_timeout(struct lock_file *lk, const char *path,
 
                backoff_ms = multiplier * INITIAL_BACKOFF_MS;
                /* back off for between 0.75*backoff_ms and 1.25*backoff_ms */
 
                backoff_ms = multiplier * INITIAL_BACKOFF_MS;
                /* back off for between 0.75*backoff_ms and 1.25*backoff_ms */

-               wait_us = (750 + random() % 500) * backoff_ms;
+               wait_us = (750 + rand() % 500) * backoff_ms;

                sleep_microseconds(wait_us);
                remaining_us -= wait_us;
 
                sleep_microseconds(wait_us);
                remaining_us -= wait_us;