/*
- * Copyright (c) 2009, 2010 Nicira Networks.
+ * Copyright (c) 2009, 2010, 2011, 2012 Nicira Networks.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include <stdlib.h>
#include "dynamic-string.h"
#include "hash.h"
+#include "timeval.h"
#include "unixctl.h"
#include "util.h"
#include "vlog.h"
static unsigned int epoch;
static void
-coverage_unixctl_log(struct unixctl_conn *conn, const char *args OVS_UNUSED,
- void *aux OVS_UNUSED)
+coverage_unixctl_log(struct unixctl_conn *conn, int argc OVS_UNUSED,
+ const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
{
coverage_log(VLL_WARN, false);
- unixctl_command_reply(conn, 200, NULL);
+ unixctl_command_reply(conn, NULL);
}
void
coverage_init(void)
{
- unixctl_command_register("coverage/log", coverage_unixctl_log, NULL);
+ unixctl_command_register("coverage/log", "", 0, 0,
+ coverage_unixctl_log, NULL);
}
/* Sorts coverage counters in descending order by count, within equal counts
static uint32_t hit[HIT_BITS / BITS_PER_WORD];
BUILD_ASSERT_DECL(IS_POW2(HIT_BITS));
+ static long long int next_clear = LLONG_MIN;
+
unsigned int bit_index = hash & (HIT_BITS - 1);
unsigned int word_index = bit_index / BITS_PER_WORD;
unsigned int word_mask = 1u << (bit_index % BITS_PER_WORD);
+ /* Expire coverage hash suppression once a day. */
+ if (time_msec() >= next_clear) {
+ memset(hit, 0, sizeof hit);
+ next_clear = time_msec() + 60 * 60 * 24 * 1000LL;
+ }
+
if (hit[word_index] & word_mask) {
- return true;
+ return true;
} else {
hit[word_index] |= word_mask;
return false;