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[RFC: 0/9] No context-switching
- From: Pedro Alves <pedro at codesourcery dot com>
- To: gdb-patches at sourceware dot org
- Date: Sat, 16 Aug 2008 16:29:11 +0100
- Subject: [RFC: 0/9] No context-switching
This series of patches removes inferior control globals, in favour of
accessing thread_info members directly, effectivelly, getting rid of
the need to context-switch.
I've layed out the series so it is always functional at all of
its incremental steps. At the end of the series, context_switch will
just be a wrapper around switch_to_thread. I still left that function
around, mainly, for "set debug infrun 1" purposes (it prints an
useful message).
I've tested the whole series on x86_64-unknown-linux-gnu,
i386-unknown-openbsd4.3, i386-pc-solaris2.11, i686-pc-cygwin,
and arm-none-linux-gnu (to cover software single-step), I found no
regressions.
This series depends on having all targets register the main thread
in the the thread list, even when debugging a single-threaded
inferior. Patches for most of the targets have been posted
already, most approved.
I believe the only missing targets to adjust are AIX,
remote-mips.c, nto-procfs.c. I've talked with Aleksandar about
nto, and we came to the conclusion that nto is easy to fix.
remote-mips.c should be as similarly easy to remote-m32-sdi.c,
monitor.c or remote-sim.c. I'll try to give another look at
AIX this weekend, and browse over IBM's documentation, to see if
I can come up with an initial patch, but it doesn't seem likelly,
with no AIX access.
In the mean time, I thought I'd post this series as an RFC.
--
Pedro Alves