From: Brad Smith <brad@comstyle.com>
Date: Sat, 25 Feb 2023 02:17:16 +0000 (-0500)
Subject: Add support for OpenBSD
X-Git-Url: https://git.lttng.org/?p=userspace-rcu.git;a=commitdiff_plain;h=11f3d1c24e6179abf8247611c5308f41d95389a1

Add support for OpenBSD

- Add OpenBSD to syscall compatibility header as appropriate.
- Add function for retrieving the thread id in urcu_get_thread_id().
- Rely on pthread cond variables for futex compatibility.

It builds on all of our archs and fully run time tested on amd64.

Signed-off-by: Brad Smith <brad@comstyle.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Change-Id: I5cca5962ba3dc3113c9bd12e544b6e6f77dfdb61
---

diff --git a/include/urcu/syscall-compat.h b/include/urcu/syscall-compat.h
index 23b266e..eaac679 100644
--- a/include/urcu/syscall-compat.h
+++ b/include/urcu/syscall-compat.h
@@ -33,7 +33,8 @@
 #include <syscall.h>
 
 #elif defined(__CYGWIN__) || defined(__APPLE__) || \
-	defined(__FreeBSD__) || defined(__DragonFly__)
+	defined(__FreeBSD__) || defined(__DragonFly__) || \
+	defined(__OpenBSD__)
 /* Don't include anything on these platforms. */
 
 #else
diff --git a/tests/common/thread-id.h b/tests/common/thread-id.h
index cb0d903..1e53396 100644
--- a/tests/common/thread-id.h
+++ b/tests/common/thread-id.h
@@ -68,7 +68,14 @@ unsigned long urcu_get_thread_id(void)
 	pthread_t thr = pthread_self();
 	return pthread_getsequence_np(&thr);
 }
+#elif defined(__OpenBSD__)
+#include <unistd.h>
 
+static inline
+unsigned long urcu_get_thread_id(void)
+{
+	return (unsigned long) getthrid();
+}
 #else
 # warning "use pid as thread ID"
 static inline