-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
*/
#include <stdio.h>
#include <rte_timer.h>
#include <rte_debug.h>
-#define TIMER_RESOLUTION_CYCLES 20000000ULL /* around 10ms at 2 Ghz */
-
+static uint64_t timer_resolution_cycles;
static struct rte_timer timer0;
static struct rte_timer timer1;
-/* timer0 callback */
+/* timer0 callback. 8< */
static void
-timer0_cb(__attribute__((unused)) struct rte_timer *tim,
- __attribute__((unused)) void *arg)
+timer0_cb(__rte_unused struct rte_timer *tim,
+ __rte_unused void *arg)
{
static unsigned counter = 0;
unsigned lcore_id = rte_lcore_id();
if ((counter ++) == 20)
rte_timer_stop(tim);
}
+/* >8 End of timer0 callback. */
-/* timer1 callback */
+/* timer1 callback. 8< */
static void
-timer1_cb(__attribute__((unused)) struct rte_timer *tim,
- __attribute__((unused)) void *arg)
+timer1_cb(__rte_unused struct rte_timer *tim,
+ __rte_unused void *arg)
{
unsigned lcore_id = rte_lcore_id();
uint64_t hz;
lcore_id = rte_get_next_lcore(lcore_id, 0, 1);
rte_timer_reset(tim, hz/3, SINGLE, lcore_id, timer1_cb, NULL);
}
+/* >8 End of timer1 callback. */
-static __attribute__((noreturn)) int
-lcore_mainloop(__attribute__((unused)) void *arg)
+static __rte_noreturn int
+lcore_mainloop(__rte_unused void *arg)
{
uint64_t prev_tsc = 0, cur_tsc, diff_tsc;
unsigned lcore_id;
lcore_id = rte_lcore_id();
printf("Starting mainloop on core %u\n", lcore_id);
+ /* Main loop. 8< */
while (1) {
/*
- * Call the timer handler on each core: as we don't
- * need a very precise timer, so only call
- * rte_timer_manage() every ~10ms (at 2Ghz). In a real
- * application, this will enhance performances as
- * reading the HPET timer is not efficient.
+ * Call the timer handler on each core: as we don't need a
+ * very precise timer, so only call rte_timer_manage()
+ * every ~10ms. In a real application, this will enhance
+ * performances as reading the HPET timer is not efficient.
*/
- cur_tsc = rte_rdtsc();
+ cur_tsc = rte_get_timer_cycles();
diff_tsc = cur_tsc - prev_tsc;
- if (diff_tsc > TIMER_RESOLUTION_CYCLES) {
+ if (diff_tsc > timer_resolution_cycles) {
rte_timer_manage();
prev_tsc = cur_tsc;
}
}
+ /* >8 End of main loop. */
}
int
uint64_t hz;
unsigned lcore_id;
- /* init EAL */
+ /* Init EAL. 8< */
ret = rte_eal_init(argc, argv);
if (ret < 0)
rte_panic("Cannot init EAL\n");
/* init RTE timer library */
rte_timer_subsystem_init();
+ /* >8 End of init EAL. */
- /* init timer structures */
+ /* Init timer structures. 8< */
rte_timer_init(&timer0);
rte_timer_init(&timer1);
+ /* >8 End of init timer structures. */
- /* load timer0, every second, on master lcore, reloaded automatically */
+ /* Load timer0, every second, on main lcore, reloaded automatically. 8< */
hz = rte_get_timer_hz();
+ timer_resolution_cycles = hz * 10 / 1000; /* around 10ms */
+
lcore_id = rte_lcore_id();
rte_timer_reset(&timer0, hz, PERIODICAL, lcore_id, timer0_cb, NULL);
lcore_id = rte_get_next_lcore(lcore_id, 0, 1);
rte_timer_reset(&timer1, hz/3, SINGLE, lcore_id, timer1_cb, NULL);
- /* call lcore_mainloop() on every slave lcore */
- RTE_LCORE_FOREACH_SLAVE(lcore_id) {
+ /* >8 End of two timers configured. */
+
+ /* Call lcore_mainloop() on every worker lcore. 8< */
+ RTE_LCORE_FOREACH_WORKER(lcore_id) {
rte_eal_remote_launch(lcore_mainloop, NULL, lcore_id);
}
- /* call it on master lcore too */
+ /* call it on main lcore too */
(void) lcore_mainloop(NULL);
+ /* >8 End of call lcore_mainloop() on every worker lcore. */
+
+ /* clean up the EAL */
+ rte_eal_cleanup();
return 0;
}
git.droids-corp.org / dpdk.git / blobdiff