Code here: https://github.com/WebKit/webkit/blob/master/Source/WTF/wtf/Lock.h https://github.com/WebKit/webkit/blob/master/Source/WTF/wtf/... https://github.c

Code here: https://github.com/WebKit/webkit/blob/master/Source/WTF/wtf/Lock.h https://github.com/WebKit/webkit/blob/master/Source/WTF/wtf/... https://github.com/WebKit/webkit/blob/master/Source/WTF/wtf/Condition.h https://github.com/WebKit/webkit/blob/master/Source/WTF/wtf/...