77 lines
1.7 KiB
C
77 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2015 Cyril Hrubis <chrubis@suse.cz>
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* Copyright (C) 2021 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
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*/
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#ifndef FUTEX_UTILS_H__
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#define FUTEX_UTILS_H__
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#include <stdio.h>
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#include <stdlib.h>
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#if __NR_futex != __LTP__NR_INVALID_SYSCALL && __NR_futex_time64 != __LTP__NR_INVALID_SYSCALL
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# define FUTEX_VARIANTS 2
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#else
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# define FUTEX_VARIANTS 1
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#endif
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static inline struct futex_test_variants futex_variant(void)
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{
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struct futex_test_variants variants[] = {
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#if (__NR_futex != __LTP__NR_INVALID_SYSCALL)
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{ .fntype = FUTEX_FN_FUTEX, .desc = "syscall with old kernel spec" },
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#endif
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#if (__NR_futex_time64 != __LTP__NR_INVALID_SYSCALL)
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{ .fntype = FUTEX_FN_FUTEX64, .desc = "syscall time64 with kernel spec" },
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#endif
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};
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return variants[tst_variant];
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}
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/*
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* Wait for nr_threads to be sleeping
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*/
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static inline int wait_for_threads(unsigned int nr_threads)
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{
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char thread_state, name[1024];
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DIR *dir;
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struct dirent *dent;
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unsigned int cnt = 0;
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snprintf(name, sizeof(name), "/proc/%i/task/", getpid());
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dir = SAFE_OPENDIR(name);
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while ((dent = SAFE_READDIR(dir))) {
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/* skip ".", ".." and the main thread */
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if (atoi(dent->d_name) == getpid() || atoi(dent->d_name) == 0)
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continue;
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snprintf(name, sizeof(name), "/proc/%i/task/%s/stat",
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getpid(), dent->d_name);
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SAFE_FILE_SCANF(name, "%*i %*s %c", &thread_state);
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if (thread_state != 'S') {
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tst_res(TINFO, "Thread %s not sleeping yet", dent->d_name);
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SAFE_CLOSEDIR(dir);
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return 1;
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}
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cnt++;
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}
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SAFE_CLOSEDIR(dir);
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if (cnt != nr_threads) {
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tst_res(TINFO, "%u threads sleeping, expected %u", cnt,
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nr_threads);
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}
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return 0;
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}
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#endif /* FUTEX_UTILS_H__ */
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