Summary:
There was a race condition in the AsyncThread, where we would end up sending a vAttach
notification to the thread before it got a chance set up its listener (this can be reproduced by
adding a sleep() at the very beginning of ProcessGDBRemote::AsyncThread()). This event would then
get lost and we LLDB would deadlock. I fix this by setting up the listener early on, in the
ProcessGDBRemote constructor.
This should improve the stability of all attach tests. For now, I am removing XTIMEOUT from
TestAttachResume, and will watch the buildbots for signs of trouble.
Reviewers: clayborg, ovyalov
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D12552
llvm-svn: 246756
Summary:
There was a race condition in Process class, where we would not wait for process stdout to
propagate fully before we would shut down the connection (repro case: slow down the stdio thread
by placing a sleep right at the end of the while loop in Communication::ReadThread). The Process
class already tried to solve this problem by synchronizing with the read thread in
Process::ShouldBroadcastEvent, but unfortunately the connection got closed before that in
Process::SetExitStatus. I solve this issue by delaying the connection shutdown until we get a
chance to process the event and synchronize. Alternatively, I could have moved the
synchronization point to an earlier point in SetExitStatus, but it seems safer to delay the
shutdown until other things get a chance to notice the process has exited.
Reviewers: clayborg, ovyalov
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D12558
llvm-svn: 246753
Summary:
This doesn't exist in other LLVM projects any longer and doesn't
do anything.
Reviewers: chaoren, labath
Subscribers: emaste, tberghammer, lldb-commits, danalbert
Differential Revision: http://reviews.llvm.org/D12586
llvm-svn: 246749
almost all the elements on the list can't actually be passed to the language
command and all the ones that can have already been listed in the subcommands
list.
<rdar://problem/22551082>
llvm-svn: 246740
This is still something I need to fix, but at least it's not so ugly, and it's
consistent with the other code that does that so we will catch it when we purge
all such code.
llvm-svn: 246738
Clang-specific part, create the ExpressionVariable source/header file and
move ClangExpressionVariable into the Clang expression parser plugin.
It is expected that there are some ugly #include paths... these will be resolved
by either (1) making that code use generic expression variables (once they're
separated appropriately) or (2) moving that code into a plug-in, often
the expression parser plug-in.
llvm-svn: 246737
Some tests were failing because the test would try to delete the
file before inferior had exited, but on Windows this will fail by
default unless you specify FILE_SHARE_DELETE when opening the file.
Can't think of a good reason not to do this, so here it is.
llvm-svn: 246682
Instead of fixing these tests by finding a pexpect replacement,
this set of tests can be fixed by re-writing the test to not use
pexpect.
llvm.org/pr24679
llvm-svn: 246671
This fixes a regression caused by r245645 where creating alternative
thumb disassembler was enabled even when the main disassembler is
already thumb.
llvm-svn: 246649
If no architecture is defined for the disassambler command then it uses
the architecture of the target. In case of arm it will be "arm" what is
treated as the oldest arm version by the LLVM disassambler causing a lot
of invalid opcode in the output.
This change forces the use of "armv8.1a" (the newest arm architecture) if
no sub architecure was specified (either by the user or by the target) to
disassamble all instruction.
Differential revision: http://reviews.llvm.org/D12553
llvm-svn: 246648
If a command argument contains a space then it have to be escaped with
backslash signs so the argument parsing logic can parse it properly.
This CL fixes the tab completion code for the arguments to create
complitions with correctly escaped strings.
Differential revision: http://reviews.llvm.org/D12531
llvm-svn: 246639
Summary:
The test (among other things) attempts to verify that detaching works while the inferior is
running. However, this was racy since the inferior could end up stopping again before we got a
chance to detach from it (the test could be made to fail reliably by inserting a sleep just after
the last "continue" command). The reason for the stop was that we had a breakpoint set in a place
that can be hit by multiple threads, and we stop because another thread hit a breakpoint.
I fix this by moving the breakpoint to a place that is reachable from only one thread. I also
make sure that the same thread cannot hit the breakpoint if we are exceptionaly slow by flipping
a flag which makes the breakpoint unreachable (I cannot just disable or delete the breakpoint as
the test makes it a point to try detaching while breakpoints are still set).
Another source or racyness was that the test verified that the process resumes and
stops after a "continue". However, if these two events happened too fast, the initial start event
would be lost, and the test would end up confused. I have implemented this in a safer manner and
made a utility function out of it, as I know of a couple of other tests which need the same
functionality.
Reviewers: zturner, clayborg
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D12527
llvm-svn: 246623
These are useful helpers over the low-level API of the FormattersContainer, and since we're actually going to start moving formatters into plugins, it makes sense to simplify things
llvm-svn: 246612
Summary:
When calling find_first_of and find_last_of on a single character,
we can instead just call find / rfind and make our intent more
clear.
Reviewers: clayborg
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D12518
llvm-svn: 246609
Ying Chen