libcamera: base: Introduce ConditionVariable

ConditionVariable is alias to std::condition_variable. This replaces
std::condition_variable with the ConditionVariable. It enables
replacing ConditionVariable implementation easily in the following
patches.

Signed-off-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/libcamera/base/thread.h b/include/libcamera/base/thread.h
index 32ebc80a..1ebf8363 100644
--- a/include/libcamera/base/thread.h
+++ b/include/libcamera/base/thread.h
@@ -7,6 +7,7 @@
 
 #pragma once
 
+#include <condition_variable>
 #include <memory>
 #include <mutex>
 #include <sys/types.h>
@@ -26,6 +27,7 @@ class Object;
 class ThreadData;
 class ThreadMain;
 
+using ConditionVariable = std::condition_variable;
 using Mutex = std::mutex;
 using MutexLocker = std::unique_lock<std::mutex>;