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Auto merge of #125577 - devnexen:netbsd_stack_min, r=joboet

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std::pal::unix::thread fetching min stack size on netbsd.

PTHREAD_STACK_MIN is not defined however sysconf/_SC_THREAD_STACK_MIN returns it as it can vary from arch to another.
This commit is contained in:
bors 2024-06-02 15:42:33 +00:00
commit eda9d7f987
1 changed files with 10 additions and 1 deletions
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11
library/std/src/sys/pal/unix/thread.rs
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@ -717,5 +717,14 @@ unsafe fn min_stack_size(_: *const libc::pthread_attr_t) -> usize {
#[cfg(target_os = "netbsd")]
unsafe fn min_stack_size(_: *const libc::pthread_attr_t) -> usize {
2048 // just a guess
static STACK: crate::sync::OnceLock<usize> = crate::sync::OnceLock::new();
*STACK.get_or_init(|| {
let mut stack = unsafe { libc::sysconf(libc::_SC_THREAD_STACK_MIN) };
if stack < 0 {
stack = 2048; // just a guess
}
stack as usize
})
}