Merge branch 'main' into find2fdfind2fd

1 files changed, 99 insertions, 0 deletions

diff --git a/src/thread.h b/src/thread.h
new file mode 100644
index 0000000..db11bd8
--- /dev/null
+++ b/src/thread.h
@@ -0,0 +1,99 @@
+// Copyright © Tavian Barnes <tavianator@tavianator.com>
+// SPDX-License-Identifier: 0BSD
+
+/**
+ * Wrappers for POSIX threading APIs.
+ */
+
+#ifndef BFS_THREAD_H
+#define BFS_THREAD_H
+
+#include "prelude.h"
+#include <pthread.h>
+
+#if __STDC_VERSION__ < C23 && !defined(thread_local)
+#  if BFS_USE_THREADS_H
+#    include <threads.h>
+#  else
+#    define thread_local _Thread_local
+#  endif
+#endif
+
+/** Thread entry point type. */
+typedef void *thread_fn(void *arg);
+
+/**
+ * Wrapper for pthread_create().
+ *
+ * @return
+ *         0 on success, -1 on error.
+ */
+int thread_create(pthread_t *thread, const pthread_attr_t *attr, thread_fn *fn, void *arg);
+
+/**
+ * Wrapper for pthread_join().
+ */
+void thread_join(pthread_t thread, void **ret);
+
+/**
+ * Wrapper for pthread_mutex_init().
+ */
+int mutex_init(pthread_mutex_t *mutex, pthread_mutexattr_t *attr);
+
+/**
+ * Wrapper for pthread_mutex_lock().
+ */
+void mutex_lock(pthread_mutex_t *mutex);
+
+/**
+ * Wrapper for pthread_mutex_trylock().
+ *
+ * @return
+ *         Whether the mutex was locked.
+ */
+bool mutex_trylock(pthread_mutex_t *mutex);
+
+/**
+ * Wrapper for pthread_mutex_unlock().
+ */
+void mutex_unlock(pthread_mutex_t *mutex);
+
+/**
+ * Wrapper for pthread_mutex_destroy().
+ */
+void mutex_destroy(pthread_mutex_t *mutex);
+
+/**
+ * Wrapper for pthread_cond_init().
+ */
+int cond_init(pthread_cond_t *cond, pthread_condattr_t *attr);
+
+/**
+ * Wrapper for pthread_cond_wait().
+ */
+void cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex);
+
+/**
+ * Wrapper for pthread_cond_signal().
+ */
+void cond_signal(pthread_cond_t *cond);
+
+/**
+ * Wrapper for pthread_cond_broadcast().
+ */
+void cond_broadcast(pthread_cond_t *cond);
+
+/**
+ * Wrapper for pthread_cond_destroy().
+ */
+void cond_destroy(pthread_cond_t *cond);
+
+/** pthread_once() callback type. */
+typedef void once_fn(void);
+
+/**
+ * Wrapper for pthread_once().
+ */
+void invoke_once(pthread_once_t *once, once_fn *fn);
+
+#endif // BFS_THREAD_H