From 355b5406fafe0d45285e70a0b01d5e674d6a2c16 Mon Sep 17 00:00:00 2001 From: Michael Sevakis Date: Mon, 28 Apr 2014 09:15:06 -0400 Subject: Make errno a thread-local variable. errno is supposed to be thread local and we do that here in a rather makeshift way by implementing a function that returns a pointer to the __errno variable in the thread block. If more serious TLS is required, perhaps it would be worthwhile implementing it using the linker and the "__thread" storage attribute. That's a bit overkill just for this. I'm also not liking what I saw the compiler producing. Change-Id: I03bc0bd6a89f6e3d6bae7653284ee01054614f9a Reviewed-on: http://gerrit.rockbox.org/803 Reviewed-by: Michael Sevakis Tested: Michael Sevakis --- firmware/kernel/include/thread.h | 1 + 1 file changed, 1 insertion(+) (limited to 'firmware/kernel') diff --git a/firmware/kernel/include/thread.h b/firmware/kernel/include/thread.h index 9cc33b23ae..8c13b462e6 100644 --- a/firmware/kernel/include/thread.h +++ b/firmware/kernel/include/thread.h @@ -210,6 +210,7 @@ struct thread_entry volatile intptr_t retval; /* Return value from a blocked operation/ misc. use */ #endif + int __errno; /* Thread error number (errno tls) */ #ifdef HAVE_PRIORITY_SCHEDULING /* Priority summary of owned objects that support inheritance */ struct blocker *blocker; /* Pointer to blocker when this thread is blocked -- cgit v1.2.3