From cc96e2ce5875e8e5c28a9ede3c30b833b0bce225 Mon Sep 17 00:00:00 2001
From: Mica White <botahamec@outlook.com>
Date: Sat, 9 Mar 2024 14:18:27 -0500
Subject: Joins in example programs

---
 examples/basic.rs        | 8 +++++++-
 examples/double_mutex.rs | 8 +++++++-
 examples/list.rs         | 8 +++++++-
 3 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/examples/basic.rs b/examples/basic.rs
index 4ff85f8..8842e16 100644
--- a/examples/basic.rs
+++ b/examples/basic.rs
@@ -7,12 +7,18 @@ const N: usize = 10;
 static DATA: Mutex<i32> = Mutex::new(0);
 
 fn main() {
+	let mut threads = Vec::new();
 	for _ in 0..N {
-		thread::spawn(move || {
+		let th = thread::spawn(move || {
 			let key = ThreadKey::lock().unwrap();
 			let mut data = DATA.lock(key);
 			*data += 1;
 		});
+		threads.push(th);
+	}
+
+	for th in threads {
+		_ = th.join();
 	}
 
 	let key = ThreadKey::lock().unwrap();
diff --git a/examples/double_mutex.rs b/examples/double_mutex.rs
index 1469f45..d1a939c 100644
--- a/examples/double_mutex.rs
+++ b/examples/double_mutex.rs
@@ -8,14 +8,20 @@ static DATA_1: Mutex<i32> = Mutex::new(0);
 static DATA_2: Mutex<String> = Mutex::new(String::new());
 
 fn main() {
+	let mut threads = Vec::new();
 	for _ in 0..N {
-		thread::spawn(move || {
+		let th = thread::spawn(move || {
 			let key = ThreadKey::lock().unwrap();
 			let data = (&DATA_1, &DATA_2);
 			let mut guard = LockGuard::lock(&data, key);
 			*guard.1 = (100 - *guard.0).to_string();
 			*guard.0 += 1;
 		});
+		threads.push(th);
+	}
+
+	for th in threads {
+		_ = th.join();
 	}
 
 	let key = ThreadKey::lock().unwrap();
diff --git a/examples/list.rs b/examples/list.rs
index 1f811db..3903260 100644
--- a/examples/list.rs
+++ b/examples/list.rs
@@ -26,8 +26,9 @@ fn random(key: &mut ThreadKey) -> usize {
 }
 
 fn main() {
+	let mut threads = Vec::new();
 	for _ in 0..N {
-		thread::spawn(move || {
+		let th = thread::spawn(move || {
 			let mut key = ThreadKey::lock().unwrap();
 			let mut data = Vec::new();
 			for _ in 0..3 {
@@ -40,6 +41,11 @@ fn main() {
 			*guard[1] += *guard[2];
 			*guard[2] += *guard[0];
 		});
+		threads.push(th);
+	}
+
+	for th in threads {
+		_ = th.join();
 	}
 
 	let mut key = ThreadKey::lock().unwrap();
-- 
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