LibGUI+Kernel: Add a GLock class (userspace mutex.)

It's basically a userspace port of the kernel's Lock class.
Added gettid() and donate() syscalls to support the timeslice donation
feature we already enjoyed in the kernel.

1 files changed, 2 insertions, 0 deletions

diff --git a/Kernel/Process.h b/Kernel/Process.h
index 66d0770c41..cc15c1c251 100644
--- a/Kernel/Process.h
+++ b/Kernel/Process.h
@@ -97,6 +97,8 @@ public:
     void die();
     void finalize();
 
+    int sys$gettid();
+    int sys$donate(int tid);
     pid_t sys$setsid();
     pid_t sys$getsid(pid_t);
     int sys$setpgid(pid_t pid, pid_t pgid);