49 lines
1.4 KiB
Rust
49 lines
1.4 KiB
Rust
use crate::prelude::*;
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pub const MAX_THREAD_NAME_LEN: usize = 16;
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#[derive(Debug)]
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pub struct ThreadName {
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inner: [u8; MAX_THREAD_NAME_LEN],
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count: usize,
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}
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impl ThreadName {
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pub fn new() -> Self {
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ThreadName {
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inner: [0; MAX_THREAD_NAME_LEN],
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count: 0,
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}
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}
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pub fn new_from_executable_path(executable_path: &str) -> Result<Self> {
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let mut thread_name = ThreadName::new();
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let executable_file_name = executable_path
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.split('/')
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.last()
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.ok_or(Error::with_message(Errno::EINVAL, "invalid elf path"))?;
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let name = CString::new(executable_file_name)?;
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thread_name.set_name(&name)?;
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Ok(thread_name)
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}
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pub fn set_name(&mut self, name: &CStr) -> Result<()> {
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let bytes = name.to_bytes_with_nul();
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let bytes_len = bytes.len();
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if bytes_len > MAX_THREAD_NAME_LEN {
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// if len > MAX_THREAD_NAME_LEN, truncate it.
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self.count = MAX_THREAD_NAME_LEN;
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self.inner[..MAX_THREAD_NAME_LEN].clone_from_slice(&bytes[..MAX_THREAD_NAME_LEN]);
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self.inner[MAX_THREAD_NAME_LEN - 1] = 0;
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return Ok(());
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}
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self.count = bytes_len;
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self.inner[..bytes_len].clone_from_slice(bytes);
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Ok(())
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}
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pub fn name(&self) -> Result<Option<&CStr>> {
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Ok(Some(&(CStr::from_bytes_until_nul(&self.inner)?)))
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}
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}
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