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llvm-svn: 360554
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Differential Revision: https://reviews.llvm.org/D59606
llvm-svn: 356703
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Summary:
These classes describe the details of the process we are about to
launch, and so they are naturally used by the launching code in the Host
module. Previously they were present in Target because that is the most
important (but by far not the only) user of the launching code.
Since the launching code has other customers, must of which do not care
about Targets, it makes sense to move these classes to the Host layer,
next to the launching code.
This move reduces the number of times that Target is included from host
to 8 (it used to be 14).
Reviewers: zturner, clayborg, jingham, davide, teemperor
Subscribers: emaste, mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D56602
llvm-svn: 353047
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to reflect the new license.
We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.
Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.
llvm-svn: 351636
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Reviewers: lldb-commits
Subscribers: srhines, ki.stfu
Differential Revision: https://reviews.llvm.org/D52884
llvm-svn: 343825
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This call was originally being only made when launching for debug (as an
attempt to make sure we don't impart extra privileges on the launched
process), but after the debug and non-debug paths were merged, it made
it's way into generic code. This was causing problems in locked down
android environments which disallowed calling setgid even if it would be
a no-op. This prevented launching llgs from lldb-server platform.
Overall I'm not sure we should be calling setgid in the first place
(it seems random -- e.g. why don't we call setuid then as well).
However, all our other copies of launch code have it, so I choose to
keep it for now.
llvm-svn: 333073
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This is intended as a clean up after the big clang-format commit
(r280751), which unfortunately resulted in many of the comment
paragraphs in LLDB being very hard to read.
FYI, the script I used was:
import textwrap
import commands
import os
import sys
import re
tmp = "%s.tmp"%sys.argv[1]
out = open(tmp, "w+")
with open(sys.argv[1], "r") as f:
header = ""
text = ""
comment = re.compile(r'^( *//) ([^ ].*)$')
special = re.compile(r'^((([A-Z]+[: ])|([0-9]+ )).*)|(.*;)$')
for line in f:
match = comment.match(line)
if match and not special.match(match.group(2)):
# skip intentionally short comments.
if not text and len(match.group(2)) < 40:
out.write(line)
continue
if text:
text += " " + match.group(2)
else:
header = match.group(1)
text = match.group(2)
continue
if text:
filled = textwrap.wrap(text, width=(78-len(header)),
break_long_words=False)
for l in filled:
out.write(header+" "+l+'\n')
text = ""
out.write(line)
os.rename(tmp, sys.argv[1])
Differential Revision: https://reviews.llvm.org/D46144
llvm-svn: 331197
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Summary:
There was some confusion in the code about how to represent process
environment. Most of the code (ab)used the Args class for this purpose,
but some of it used a more basic StringList class instead. In either
case, the fact that the underlying abstraction did not provide primitive
operations for the typical environment operations meant that even a
simple operation like checking for an environment variable value was
several lines of code.
This patch adds a separate Environment class, which is essentialy a
llvm::StringMap<std::string> in disguise. To standard StringMap
functionality, it adds a couple of new functions, which are specific to
the environment use case:
- (most important) envp conversion for passing into execve() and likes.
Instead of trying to maintain a constantly up-to-date envp view, it
provides a function which creates a envp view on demand, with the
expectation that this will be called as the very last thing before
handing the value to the system function.
- insert(StringRef KeyEqValue) - splits KeyEqValue into (key, value)
pair and inserts it into the environment map.
- compose(value_type KeyValue) - takes a map entry and converts in back
into "KEY=VALUE" representation.
With this interface most of the environment-manipulating code becomes
one-liners. The only tricky part was maintaining compatibility in
SBLaunchInfo, which expects that the environment entries are accessible
by index and that the returned const char* is backed by the launch info
object (random access into maps is hard and the map stores the entry in
a deconstructed form, so we cannot just return a .c_str() value). To
solve this, I have the SBLaunchInfo convert the environment into the
"envp" form, and use it to answer the environment queries. Extra code is
added to make sure the envp version is always in sync.
(This also improves the layering situation as Args was in the Interpreter module
whereas Environment is in Utility.)
Reviewers: zturner, davide, jingham, clayborg
Subscribers: emaste, lldb-commits, mgorny
Differential Revision: https://reviews.llvm.org/D41359
llvm-svn: 322174
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Summary:
We had a bug where if we had forked (in the ProcessLauncherPosixFork)
while another thread was writing a log message, we would deadlock. This
happened because the fork child inherited the locked log rwmutex, which
would never get unlocked. This meant the child got stuck trying to
disable all log channels.
The bug existed for a while but only started being apparent after
D37930, which started using ThreadLauncher (which uses logging) instead
of std::thread (which does not) for launching TaskPool threads.
The fix is to use pthread_atfork to disable logging in the forked child.
Reviewers: zturner, eugene, clayborg
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D38938
llvm-svn: 316368
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llvm-svn: 313436
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llvm-svn: 308307
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Summary:
It defined a couple of types (condition_t) which we don't use anymore,
as we have c++11 goodies now. I remove these definitions.
Also it unnecessarily included a couple of headers which weren't
necessary for it's operation. I remove these, and place the includes in
the relevant files (usually .cpp, usually in Host code) which use them.
This allows us to reduce namespace pollution in most of the lldb files
which don't need the OS-specific definitions.
Reviewers: zturner, jingham
Subscribers: ki.stfu, lldb-commits
Differential Revision: https://reviews.llvm.org/D35113
llvm-svn: 308304
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I was seeing some unlikely errno values here. I am not sure if this will
help, but it nontheless seems like a good idea to stash errno value
before issuing other syscalls.
llvm-svn: 305778
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strerror is not thread-safe. llvm's StrError tries hard to retrieve the
string in a thread-safe way and falls back to strerror only if it does
not have another way.
llvm-svn: 304795
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This renames the LLDB error class to Status, as discussed
on the lldb-dev mailing list.
A change of this magnitude cannot easily be done without
find and replace, but that has potential to catch unwanted
occurrences of common strings such as "Error". Every effort
was made to find all the obvious things such as the word "Error"
appearing in a string, etc, but it's possible there are still
some lingering occurences left around. Hopefully nothing too
serious.
llvm-svn: 302872
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llvm-svn: 298536
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Summary:
previously we switched to llvm streams for log output, this completes
the switch for the error streams.
I also clean up the includes and remove the unused argument from
DisableAllLogChannels().
This required adding a bit of boiler plate to convert the output in the
command interpreter, but that should go away when we switch command
results to use llvm streams as well.
Reviewers: zturner, eugene
Subscribers: lldb-commits, emaste
Differential Revision: https://reviews.llvm.org/D30894
llvm-svn: 297812
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All references to Host and Core have been removed, so this
class can now safely be lowered into Utility.
Differential Revision: https://reviews.llvm.org/D30559
llvm-svn: 296909
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Android does not define the "cross-platform" symbol PT_TRACE_ME. Define
it ourselves, so we can keep the rest of the code generic.
llvm-svn: 293779
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Summary:
Use ProcessLauncherPosixFork in Linux and NetBSD.
Changes to ProcessLauncherLinux:
- Limit personality.h and ASLR code to Linux.
- Reuse portable ptrace(2) PT_TRACE_ME operation available on Linux and BSDs.
- Limit ETXTBSY error path from execve(2) to Linux.
- In LaunchProcess declaration change virtual to override.
This code should be readily available for FreeBSD.
Sponsored by <The NetBSD Foundation>
Reviewers: joerg, clayborg, labath, emaste
Reviewed By: labath
Subscribers: danalbert, srhines, mgorny, #lldb
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D29347
llvm-svn: 293768
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