vendor/sharded-slab/src/macros.rs

   1 macro_rules! test_println {
   2     ($($arg:tt)*) => {
   3         if cfg!(test) && cfg!(slab_print) {
   4             if std::thread::panicking() {
   5                 // getting the thread ID while panicking doesn't seem to play super nicely with loom's
   6                 // mock lazy_static...
   7                 println!("[PANIC {:>17}:{:<3}] {}", file!(), line!(), format_args!($($arg)*))
   8             } else {
   9                 println!("[{:?} {:>17}:{:<3}] {}", crate::Tid::<crate::DefaultConfig>::current(), file!(), line!(), format_args!($($arg)*))
  10             }
  11         }
  12     }
  13 }
  14
  15 #[cfg(all(test, loom))]
  16 macro_rules! test_dbg {
  17     ($e:expr) => {
  18         match $e {
  19             e => {
  20                 test_println!("{} = {:?}", stringify!($e), &e);
  21                 e
  22             }
  23         }
  24     };
  25 }
  26
  27 macro_rules! panic_in_drop {
  28     ($($arg:tt)*) => {
  29         if !std::thread::panicking() {
  30             panic!($($arg)*)
  31         } else {
  32             let thread = std::thread::current();
  33             eprintln!(
  34                 "thread '{thread}' attempted to panic at '{msg}', {file}:{line}:{col}\n\
  35                 note: we were already unwinding due to a previous panic.",
  36                 thread = thread.name().unwrap_or("<unnamed>"),
  37                 msg = format_args!($($arg)*),
  38                 file = file!(),
  39                 line = line!(),
  40                 col = column!(),
  41             );
  42         }
  43     }
  44 }
  45
  46 macro_rules! debug_assert_eq_in_drop {
  47     ($this:expr, $that:expr) => {
  48         debug_assert_eq_in_drop!(@inner $this, $that, "")
  49     };
  50     ($this:expr, $that:expr, $($arg:tt)+) => {
  51         debug_assert_eq_in_drop!(@inner $this, $that, format_args!(": {}", format_args!($($arg)+)))
  52     };
  53     (@inner $this:expr, $that:expr, $msg:expr) => {
  54         if cfg!(debug_assertions) {
  55             if $this != $that {
  56                 panic_in_drop!(
  57                     "assertion failed ({} == {})\n  left: `{:?}`,\n right: `{:?}`{}",
  58                     stringify!($this),
  59                     stringify!($that),
  60                     $this,
  61                     $that,
  62                     $msg,
  63                 )
  64             }
  65         }
  66     }
  67 }