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| author | Michael Sevakis <jethead71@rockbox.org> | 2014-04-28 09:15:06 -0400 |
|---|---|---|
| committer | Michael Sevakis <jethead71@rockbox.org> | 2014-05-09 23:14:58 +0200 |
| commit | 355b5406fafe0d45285e70a0b01d5e674d6a2c16 (patch) | |
| tree | b17e42d8e36182280cf7399c9063a6db8b2f4fc9 /firmware/kernel | |
| parent | f444ae70ebe9c978818bf473d176538244b4559e (diff) | |
| download | rockbox-355b5406fafe0d45285e70a0b01d5e674d6a2c16.tar.gz rockbox-355b5406fafe0d45285e70a0b01d5e674d6a2c16.zip | |
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 <jethead71@rockbox.org>
Tested: Michael Sevakis <jethead71@rockbox.org>
Diffstat (limited to 'firmware/kernel')
| -rw-r--r-- | firmware/kernel/include/thread.h | 1 |
1 files changed, 1 insertions, 0 deletions
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 |