From 10997596fac76cee59090ce58276f28af107a780 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Joakim=20Frosteg=C3=A5rd?= <joakim.frostegard@gmail.com>
Date: Wed, 6 Apr 2022 01:52:06 +0200
Subject: [PATCH] PanicSentinel: send SIGTERM only once

---
 aquatic_common/src/lib.rs | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/aquatic_common/src/lib.rs b/aquatic_common/src/lib.rs
index 79b91e3..a5f25aa 100644
--- a/aquatic_common/src/lib.rs
+++ b/aquatic_common/src/lib.rs
@@ -55,13 +55,15 @@ pub struct PanicSentinel(Arc<AtomicBool>);
 
 impl Drop for PanicSentinel {
     fn drop(&mut self) {
-        self.0.store(true, Ordering::SeqCst);
+        let already_triggered = self.0.fetch_or(true, Ordering::SeqCst);
 
-        if unsafe { libc::raise(15) } == -1 {
-            panic!(
-                "Could not raise SIGTERM: {:#}",
-                ::std::io::Error::last_os_error()
-            )
+        if !already_triggered {
+            if unsafe { libc::raise(15) } == -1 {
+                panic!(
+                    "Could not raise SIGTERM: {:#}",
+                    ::std::io::Error::last_os_error()
+                )
+            }
         }
     }
 }