Implement get_current_tid_inner for FreeBSD and Illumos (#83)

Author: SpriteOvO

.github/workflows/ci.yml

@@ -118,7 +118,7 @@ jobs:
       fail-fast: false
       matrix:
         os: ['ubuntu-latest', 'windows-latest', 'macos-latest']
-        target: ['', 'x86_64-apple-ios']
+        target: ['', 'x86_64-apple-ios', 'x86_64-unknown-freebsd', 'x86_64-unknown-illumos']
     runs-on: ${{ matrix.os }}
     steps:
     - name: Checkout repository

spdlog/src/record.rs

@@ -225,6 +225,20 @@ fn get_current_tid() -> u64 {
         tid as u64
     }
 
+    #[cfg(target_os = "freebsd")]
+    #[must_use]
+    fn get_current_tid_inner() -> u64 {
+        let tid = unsafe { libc::pthread_getthreadid_np() };
+        tid as u64
+    }
+
+    #[cfg(target_os = "illumos")]
+    #[must_use]
+    fn get_current_tid_inner() -> u64 {
+        let tid = unsafe { libc::thr_self() };
+        tid as u64
+    }
+
     #[cfg(any(target_os = "macos", target_os = "ios"))]
     #[must_use]
     fn get_current_tid_inner() -> u64 {