Haiku operating system support

[kallisti5]

If your operating system isn't yet supported, please, create an issue.

👀

error[E0412]: cannot find type `ThreadId` in this scope
   --> /boot/home/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/thread-priority-3.0.0/src/lib.rs:401:13
    |
401 |     pub id: ThreadId,
    |             ^^^^^^^^ not found in this scope
    |
help: consider importing this struct
    |
161 + use std::thread::ThreadId;
    |

error[E0412]: cannot find type `ThreadSchedulePolicy` in this scope
   --> /boot/home/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/thread-priority-3.0.0/src/lib.rs:510:20
    |
510 |     policy: Option<ThreadSchedulePolicy>,
    |                    ^^^^^^^^^^^^^^^^^^^^ not found in this scope
    |
help: you might be missing a type parameter
    |
504 | pub struct ThreadBuilder<ThreadSchedulePolicy> {
    |                         ++++++++++++++++++++++

error[E0425]: cannot find function `thread_native_id` in this scope
   --> /boot/home/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/thread-priority-3.0.0/src/lib.rs:607:17
    |
607 |                 thread_native_id(),
    |                 ^^^^^^^^^^^^^^^^ not found in this scope

error[E0425]: cannot find function `set_thread_priority_and_policy` in this scope
   --> /boot/home/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/thread-priority-3.0.0/src/lib.rs:606:49
    |
606 |             (Some(priority), Some(policy)) => f(set_thread_priority_and_policy(
    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope

error[E0425]: cannot find function `set_current_thread_priority` in this scope
   --> /boot/home/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/thread-priority-3.0.0/src/lib.rs:391:9
    |
391 |         set_current_thread_priority(self)
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^------
    |         |
    |         help: try calling `set_current_thread_priority` as a method: `self.set_current_thread_priority()`

error[E0425]: cannot find function `get_current_thread_priority` in this scope
   --> /boot/home/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/thread-priority-3.0.0/src/lib.rs:416:23
    |
416 |             priority: get_current_thread_priority()?,
    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope

error[E0425]: cannot find function `thread_native_id` in this scope
   --> /boot/home/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/thread-priority-3.0.0/src/lib.rs:417:17
    |
417 |             id: thread_native_id(),
    |                 ^^^^^^^^^^^^^^^^ not found in this scope

error[E0433]: failed to resolve: use of unresolved module or unlinked crate `unix`
   --> /boot/home/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/thread-priority-3.0.0/src/lib.rs:559:31
    |
559 |     pub fn policy<VALUE: Into<unix::ThreadSchedulePolicy>>(mut self, value: VALUE) -> Self {
    |                               ^^^^ use of unresolved module or unlinked crate `unix`
    |
    = help: if you wanted to use a crate named `unix`, use `cargo add unix` to add it to your `Cargo.toml`

Some errors have detailed explanations: E0412, E0425, E0433.
For more information about an error, try `rustc --explain E0412`.
error: could not compile `thread-priority` (lib) due to 9 previous errors

[kallisti5]

I spent a few minutes poking at adding Haiku support. Since threads on Haiku are a bit different, there may be some larger restructuring needed.

/Data/Code/thread-priority> git diff
diff --git a/src/lib.rs b/src/lib.rs
index 70e9a23..aedaaf5 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -155,6 +155,7 @@
     target_os = "vxworks",
     target_os = "netbsd",
     target_os = "android",
+    target_os = "haiku",
     target_arch = "wasm32",
 ))]
 pub mod unix;
@@ -172,6 +173,7 @@ use std::time::Duration;
     target_os = "vxworks",
     target_os = "netbsd",
     target_os = "android",
+    target_os = "haiku",
     target_arch = "wasm32",
 ))]
 pub use unix::*;
diff --git a/src/unix.rs b/src/unix.rs
index 3d11edd..eb32b2a 100644
--- a/src/unix.rs
+++ b/src/unix.rs
@@ -8,13 +8,16 @@ use std::convert::TryFrom;
 
 #[cfg(target_os = "android")]
 use libc::SCHED_NORMAL as SCHED_OTHER;
-#[cfg(not(target_os = "android"))]
+#[cfg(not(target_os = "android", target_os = "haiku"))]
 use libc::SCHED_OTHER;
 #[cfg(target_os = "vxworks")]
 use libc::SCHED_SPORADIC;
 #[cfg(any(target_os = "linux", target_os = "android"))]
 use libc::{SCHED_BATCH, SCHED_IDLE};
+#[cfg(not(target_os = "haiku"))]
 use libc::{SCHED_FIFO, SCHED_RR};
+#[cfg(any(target_os = "haiku"))]
+use libs::{B_IDLE_PRIORITY, B_LOW_PRIORITY, B_NORMAL_PRIORITY, B_URGENT_PRIORITY, B_REAL_TIME_PRIORITY}
 
 use crate::{Error, ThreadPriority, ThreadPriorityValue};
 use std::mem::MaybeUninit;
@@ -53,6 +56,8 @@ fn errno() -> libc::c_int {
                 *libc::__errno_location()
             } else if #[cfg(any(target_os = "macos", target_os = "ios", target_os = "freebsd"))] {
                 *libc::__error()
+            } else if #[cfg(target_os = "haiku")] {
+                *libc::__errnop()
             } else if #[cfg(target_os = "vxworks")] {
                 libc::errnoGet()
             } else {
@@ -71,6 +76,8 @@ fn set_errno(number: libc::c_int) {
                 *libc::__errno_location() = number;
             } else if #[cfg(any(target_os = "macos", target_os = "ios", target_os = "freebsd"))] {
                 *libc::__error() = number;
+            } else if #[cfg(target_os = "haiku")] {
+                *libc::__errnop() = number
             } else if #[cfg(target_os = "vxworks")] {
                 let _ = libc::errnoSet(number);
             } else {

[iddm]

👍
Hi! Thank you for your contribution! :-)

If you don't mind, I think you are already halfway to adding the support. Could you create a PR? I have no means of testing it, though. Will you also be able to give some hints on how to test it as easily as possible? Also, perhaps, in CI as well?