mirror of https://gitee.com/openkylin/linux.git
26 lines
368 B
C
26 lines
368 B
C
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <unistd.h>
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int main(void)
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{
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char buf[64];
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int fd;
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fd = open("/proc/self/wchan", O_RDONLY);
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if (fd == -1) {
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if (errno == ENOENT)
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return 2;
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return 1;
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}
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buf[0] = '\0';
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if (read(fd, buf, sizeof(buf)) != 1)
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return 1;
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if (buf[0] != '0')
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return 1;
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return 0;
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}
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