From 92787ddd751d05c5e961631e9676cac95136f6f0 Mon Sep 17 00:00:00 2001
From: Marvin Friedrich <contact@marvinf.com>
Date: Fri, 23 Oct 2026 00:35:11 +0200
Subject: [PATCH] Add initializers

---
 include/zinnia/mutex.h  | 2 ++
 include/zinnia/rwlock.h | 2 ++
 lib/mutex.c             | 4 ++++
 lib/rwlock.c            | 4 ++++
 4 files changed, 12 insertions(+)

diff --git a/include/zinnia/mutex.h b/include/zinnia/mutex.h
index cd66f80..b460e0d 100644
--- a/include/zinnia/mutex.h
+++ b/include/zinnia/mutex.h
@@ -6,6 +6,8 @@
 
 typedef _Atomic(uintptr_t) mutex_t;
 
+void mutex_init(mutex_t* mutex);
+
 void mutex_lock(mutex_t* mutex);
 
 bool mutex_trylock(mutex_t* mutex);
diff --git a/include/zinnia/rwlock.h b/include/zinnia/rwlock.h
index 8287782..85ed512 100644
--- a/include/zinnia/rwlock.h
+++ b/include/zinnia/rwlock.h
@@ -8,6 +8,8 @@ struct rwlock {
     atomic_uintptr_t word;
 };
 
+void rwlock_init(struct rwlock* rw);
+
 void rwlock_read_lock(struct rwlock* rw);
 void rwlock_read_unlock(struct rwlock* rw);
 bool rwlock_try_read_lock(struct rwlock* rw);
diff --git a/lib/mutex.c b/lib/mutex.c
index 6e37119..fed07ff 100644
--- a/lib/mutex.c
+++ b/lib/mutex.c
@@ -32,6 +32,10 @@ static inline bool owner_is_running(uintptr_t owner) {
     return atomic_load(&((struct task*)owner)->on_cpu, ATOMIC_RELAXED);
 }
 
+void mutex_init(mutex_t* mutex) {
+    atomic_store(mutex, 0, ATOMIC_RELAXED);
+}
+
 bool mutex_trylock(mutex_t* mutex) {
     uintptr_t self = self_token();
     uintptr_t word = atomic_load(mutex, ATOMIC_RELAXED);
diff --git a/lib/rwlock.c b/lib/rwlock.c
index b9c24aa..661dbdf 100644
--- a/lib/rwlock.c
+++ b/lib/rwlock.c
@@ -41,6 +41,10 @@ static inline uint8_t priority_of(struct task* task) {
     return atomic_load(&task->priority, ATOMIC_RELAXED);
 }
 
+void rwlock_init(struct rwlock* rw) {
+    atomic_store(&rw->word, 0, ATOMIC_RELAXED);
+}
+
 bool rwlock_try_read_lock(struct rwlock* rw) {
     uintptr_t word = atomic_load(&rw->word, ATOMIC_RELAXED);
     while (!(word & (RW_WRITE_LOCK | RW_WRITE_WANT))) {