hmz007
36ed224bac
Signed-off-by: hmz007 <hmz007@gmail.com> Change-Id: Ib87fdbe7a0be7dc961af3500fe9ea4589a127f9f
39 lines
734 B
C
39 lines
734 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2022 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include "tst_safe_file_ops.h"
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#include "tst_process_state.h"
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int tst_thread_state_wait(pid_t tid, const char state,
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unsigned int msec_timeout)
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{
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char proc_path[128], cur_state;
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unsigned int msecs = 0;
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snprintf(proc_path, sizeof(proc_path), "/proc/self/task/%i/stat", tid);
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for (;;) {
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SAFE_FILE_SCANF(proc_path, "%*i %*s %c", &cur_state);
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if (state == cur_state)
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break;
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usleep(1000);
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msecs += 1;
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if (msec_timeout && msecs >= msec_timeout) {
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errno = ETIMEDOUT;
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return -1;
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}
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}
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return 0;
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}
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