mirror of https://github.com/F-Stack/f-stack.git
65 lines
1.1 KiB
C
65 lines
1.1 KiB
C
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/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2022 Red Hat, Inc.
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*/
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#include <errno.h>
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#include <unistd.h>
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#include <rte_debug.h>
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#include "eal_private.h"
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int
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eal_thread_wake_worker(unsigned int worker_id)
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{
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int m2w = lcore_config[worker_id].pipe_main2worker[1];
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int w2m = lcore_config[worker_id].pipe_worker2main[0];
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char c = 0;
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int n;
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do {
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n = write(m2w, &c, 1);
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} while (n == 0 || (n < 0 && errno == EINTR));
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if (n < 0)
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return -EPIPE;
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do {
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n = read(w2m, &c, 1);
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} while (n < 0 && errno == EINTR);
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if (n <= 0)
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return -EPIPE;
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return 0;
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}
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void
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eal_thread_wait_command(void)
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{
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unsigned int lcore_id = rte_lcore_id();
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int m2w;
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char c;
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int n;
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m2w = lcore_config[lcore_id].pipe_main2worker[0];
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do {
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n = read(m2w, &c, 1);
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} while (n < 0 && errno == EINTR);
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if (n <= 0)
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rte_panic("cannot read on configuration pipe\n");
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}
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void
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eal_thread_ack_command(void)
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{
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unsigned int lcore_id = rte_lcore_id();
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char c = 0;
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int w2m;
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int n;
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w2m = lcore_config[lcore_id].pipe_worker2main[1];
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do {
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n = write(w2m, &c, 1);
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} while (n == 0 || (n < 0 && errno == EINTR));
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if (n < 0)
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rte_panic("cannot write on configuration pipe\n");
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}
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