This requires Windows NT 6.0 (Vista and Server 2008). On earlier
operating system versions, the existing behavior of inheriting all
inheritable handles is retained.
BUG=crashpad:69
R=scottmg@chromium.org
Review URL: https://codereview.chromium.org/1427273003 .
This consolidates all of the twisted casts and comments that discuss how
HANDLEs are really only 32 bits wide even in 64-bit processes on 64-bit
operating systems into a single location.
R=scottmg@chromium.org
Review URL: https://codereview.chromium.org/1422503015 .
Allowing the client to create its own pipe name string caused a race
between client and server. Instead, in this mode, the server now creates
the pipe name along with a pipe, and returns it to its client via a
--handshake-handle. This guarantees that by the time the client gets the
pipe name, the server has already created it.
Ephemeral mode is now implied by --handshake-handle. The --persistent
option is gone. --persistent mode is enabled when using --pipe-name.
BUG=crashpad:69
R=scottmg@chromium.org
Review URL: https://codereview.chromium.org/1432563003 .
By invoking crashpad_handler with --mach-service instead of
--handshake-fd, the handler will run as a well-behaved launchd job. The
launchd job may be as a launch agent or launch daemon, or be submitted
to launchd by on_demand_service_tool.
BUG=crashpad:25
R=rsesek@chromium.org
Review URL: https://codereview.chromium.org/1414533006 .
For multiprocess architectures, this method allows the pipe used for
registration to be obtained from CrashpadHandler, even when
CrashpadHandler chooses its own name. This may happen if the handler is
not running on a well-known pipe name but was instead started by
CrashpadHandler::StartHandler(). If Chrome uses this interface, for
example, the browser process will need to call
CrashpadClient::GetHandlerIPCPipe() and pass the pipe name to its child
processes.
R=scottmg@chromium.org
Review URL: https://codereview.chromium.org/1427163004 .
Previously, crashpad_handler made its own receive right, and transferred
a corresponding send right to its client. There are two advantages to
making the receive right in the client:
- It is possible to monitor the receive right for a port-destroyed
notificaiton in the client, allowing the handler to be restarted if
it dies.
- For the future run-from-launchd mode (bug crashpad:25), the handler
will obtain its receive right from the bootstrap server instead of
making its own. Having the handler get its receive right from
different sources allows more code to be shared than if it were to
sometimes get a receive right and sometimes make a receive right and
transfer a send right.
This includes a restructuring in crashpad_client_mac.cc that will make
it easier to give it an option to restart crashpad_handler if it dies.
The handler starting logic should all behave the same as before.
BUG=crashpad:68
R=rsesek@chromium.org
Review URL: https://codereview.chromium.org/1409073013 .
The intended use is to flip the client-server relationship in
CrashpadClient so that the initial client (parent process) furnishes the
handler process with a receive right. The parent can optionally receive
a port-destroyed notification allowing it to restart the handler if it
exits prematurely.
R=rsesek@chromium.org
Review URL: https://codereview.chromium.org/1408473002 .
Fixes two incorrect usages of ssize_t/off_t being implicitly converted
to bool. As such, I think it's worth the cost of the additional !! on
BOOL returning Win32 functions.
R=mark@chromium.org
Review URL: https://codereview.chromium.org/1408123006 .
In https://codereview.chromium.org/1411523006, the Mach port scopers are
becoming better ScopedGenerics and are losing the type conversion
operators in the process. This is needed to adapt to that change. get()
is ugly, but being explicit about conversion isn’t a bad thing, and
these scopers will gain functionality such as Pass() as part of the
switch.
As a bonus, some would-be uses of get() to check for valid port rights
are becoming a more descriptive is_valid().
R=rsesek@chromium.org
Review URL: https://codereview.chromium.org/1405273002 .
I thought I had confirmed that this still allocated and ignored the flag
on older OSs, but I must have not had the PLOG active yet? I'm not sure
what I did. (I might try to blame VMware as it has an annoying habit of
caching old binaries when you use it's "Shared Folders" feature to point
at the dev machine's build dir.)
I confirmed that it does work on Win8 and Win10 but doesn't on Win XP
and Win 7.
R=mark@chromium.org
BUG=crashpad:52
Review URL: https://codereview.chromium.org/1405243002 .
Capture the memory for the loader lock (can be inspected by !cs), as
well as all locks that were created with .DebugInfo which can be viewed
with !locks.
e.g.
0:000> !cs ntdll!LdrpLoaderLock
-----------------------------------------
Critical section = 0x778d6410 (ntdll!LdrpLoaderLock+0x0)
DebugInfo = 0x778d6b6c
NOT LOCKED
LockSemaphore = 0x0
SpinCount = 0x04000000
0:000> !locks -v
CritSec ntdll!RtlpProcessHeapsListLock+0 at 778d7620
LockCount NOT LOCKED
RecursionCount 0
OwningThread 0
EntryCount 0
ContentionCount 0
CritSec +7a0248 at 007a0248
LockCount NOT LOCKED
RecursionCount 0
OwningThread 0
EntryCount 0
ContentionCount 0
CritSec crashy_program!g_critical_section_with_debug_info+0 at 01342c48
LockCount NOT LOCKED
RecursionCount 0
OwningThread 0
EntryCount 0
ContentionCount 0
CritSec crashy_program!crashpad::`anonymous namespace'::g_test_critical_section+0 at 01342be0
WaiterWoken No
LockCount 0
RecursionCount 1
OwningThread 34b8
EntryCount 0
ContentionCount 0
*** Locked
Scanned 4 critical sections
R=mark@chromium.org
BUG=crashpad:52
Review URL: https://codereview.chromium.org/1392093003 .
When not building against the C++11 library headers, the compiler cannot
treat the lambda as lvalue. When building against the C++11 library headers, it
is converted to an rvalue.
BUG=chromium:542321
R=mark@chromium.org
Review URL: https://codereview.chromium.org/1406733003 .
I’ve accidentally created Crashpad databases when running
crashpad_database_util by mistyping the argument to --database. Typical
users of crashpad_database_util probably don’t want the database to be
created.
This adds a new --create option to crashpad_database_util that is
required to get it to create a database. If not present, a database will
not be created if it does not already exist.
TEST=crashpad_client_test CrashReportDatabaseTest.*
R=rsesek@chromium.org, scottmg@chromium.org
Review URL: https://codereview.chromium.org/1395653002 .
Previously, any attempt to create a new crash report database would
result in this message being logged:
[p:t:yyyymmdd,hhmmss.uuuuuu:ERROR file_io.cc:30] read: expected 40,
observed 0
This would be the first thing that a developer embedding Crashpad into
their application would see after getting everything right. It doesn’t
exactly seem like everything’s right with that being logged. It would
also be the first thing that a user would see on stderr or in logs upon
launching a Crashpad-enabled application, which also seems kind of
dodgy.
The crash report database settings creation logic is restructured to
avoid logging this error when definitely creating a new database, while
retaining all other error logging.
BUG=crashpad:63
TEST=crashpad_database_util --database $new_db --show-client-id
(should not show any errors)
R=rsesek@chromium.org, scottmg@chromium.org
Review URL: https://codereview.chromium.org/1392953002 .
This resolves some left-behind TODOs referring to a closed bug. It looks
like this should have worked since dfaa25af4929.
BUG=crashpad:13
TEST=crashpad_snapshot_test CrashReportDatabaseTest.*
R=scottmg@chromium.org
Review URL: https://codereview.chromium.org/1391993002 .
ExceptionPorts::GetExceptionPorts() returned a
std::vector<ExceptionPorts::ExceptionHandler>, which contained send
rights to Mach ports. The interface required callers to assume ownership
of each send right contained within the vector. This was cumbersome and
error-prone, and despite the care taken in Crashpad, port right leaks
did occur:
- SimulateCrash() didn’t make any attempt to release these resources at
all.
- Neither did crashpad_util_test ExceptionPorts.HostExceptionPorts,
which also reused a vector.
This replaces the vector with the interface-compatible (as far as
necessary) ExceptionPorts::ExceptionHandlerVector, which deallocates
collected port rights on destruction or clear().
R=rsesek@chromium.org
Review URL: https://codereview.chromium.org/1381023007 .
If the task’s exception handler for EXC_CRASH, EXC_RESOURCE, and
EXC_GUARD exceptions cannot be set, clear the handler instead.
Nothing considered this function’s return value, and the only viable
fallback action on failure would have been to do what the function now
does, so its return type is changed to void.
R=rsesek@chromium.org
Review URL: https://codereview.chromium.org/1386943002 .
Chrome’s relauncher process needs a way to sever ties with the
crashpad_handler instance running from the disk image in order to cause
that instance to exit so that the disk image may be unmounted. This new
function is otherwise not thought to be interesting, and its use is not
recommended.
This comes with a small refactoring to create a
SystemCrashReporterHandler() function, and a fix for a minor port leak
in CrashReportExceptionHandler::CatchMachException().
BUG=chromium:538373
R=rsesek@chromium.org
Review URL: https://codereview.chromium.org/1375573005 .
Windows requires the connection to the handler to do anything, so it
can't really be implemented or tested without CrashpadClient and the
connection machinery.
R=mark@chromium.org
BUG=crashpad:53
Review URL: https://codereview.chromium.org/1356383002 .
CrashReportExceptionHandler::CatchMachException() must always set a
valid new_state. Failing to do so appears to trigger corpse generation
on OS X 10.11. This is addressed by calling ExcServerCopyState().
Previously, this was not done for exceptions forwarded to the user
ReportCrash, under the apparent mistaken assumption that ReportCrash
would do it. However, ReportCrash is given copies of out-parameters like
new_state to explicitly prevent it from influencing Crashpad’s returned
state.
ExcServerSuccessfulReturnValue() must not return MACH_RCV_PORT_DIED for
an EXC_CRASH handler on OS X 10.11. This appears to trigger corpse
generation. This is addressed by always returning KERN_SUCCESS from
EXC_CRASH handlers on OS X 10.11.
This also adds generic EXC_CORPSE_NOTIFY support throughout Crashpad.
The crashpad_handler does not listen for this exception type, but it is
now possible to work with this exception type using tools like
exception_port_tool and catch_exception_tool.
BUG=crashpad:48
TEST=Crashes handled by crashpad_handler do not result in the generation
of reports in the root /Library/Logs/DiagnosticReports.
R=kerrnel@chromium.org, rsesek@chromium.org
Review URL: https://codereview.chromium.org/1305893010 .
This replaces the registration server, and adds dispatch to a delegate
on crash requests.
(As you are already aware) we went around in circles on trying to come
up with a slightly-too-fancy threading design. All of them seemed to
have problems when it comes to out of order events, and orderly
shutdown, so I've gone back to something not-too-fancy.
Two named pipe instances (that clients connect to) are created. These
are used only for registration (which should take <1ms), so 2 should be
sufficient to avoid any waits. When a client registers, we duplicate
an event to it, which is used to signal when it wants a dump taken.
The server registers threadpool waits on that event, and also on the
process handle (which will be signalled when the client process exits).
These requests (in particular the taking of the dump) are serviced
on the threadpool, which avoids us needing to manage those threads,
but still allows parallelism in taking dumps. On process termination,
we use an IO Completion Port to post a message back to the main thread
to request cleanup. This complexity is necessary so that we can
unregister the threadpool waits without being on the threadpool, which
we need to do synchronously so that we can be sure that no further
callbacks will execute (and expect to have the client data around
still).
In a followup, I will readd support for DumpWithoutCrashing -- I don't
think it will be too difficult now that we have an orderly way to
clean up client records in the server.
R=cpu@chromium.org, mark@chromium.org, jschuh@chromium.org
BUG=crashpad:1,crashpad:45
Review URL: https://codereview.chromium.org/1301853002 .
MachOImageReader::GetCrashpadInfo() expects the CrashpadInfo struct to
be the only thing in a __DATA,__crashpad_info section, and enforces this
by checking that the section’s size matches the size declared in the
struct’s size_ field.
Under AddressSanitizer, a red zone follows the structure. While not
reflected in the size of the structure, it is reflected in the size of
the section, causing MachOImageReader::GetCrashpadInfo() to reject the
CrashpadInfo on the assumption that something else is present in the
section.
By specifying an alignment greater than the minimum red zone size of 32
bytes, red zone generation can be suppressed.
TEST=crashpad_snapshot_test
BUG=crashpad:44
R=glider@chromium.org, rsesek@chromium.org
Review URL: https://codereview.chromium.org/1296523003 .
Under asan, there are many more instructions than without. The “nearby
PC” check is much less useful, and would likely fail.
TEST=crashpad_client_test CaptureContext.CaptureContext
R=rsesek@chromium.org
Review URL: https://codereview.chromium.org/1298943003 .
- Add public domain getopt implementation to third_party.
- Add timegm to compat/win.
- Add stub of strptime to compat/win.
Requires https://codereview.chromium.org/1119173003/ and
https://codereview.chromium.org/1117013006/.
Rather than working in wchar_t everywhere on Windows, convert
UTF16 command line arguments in wmain to UTF8, work primarily
in UTF8, and convert back when necessary to UTF16 for base::FilePath.
This avoids the need to genericize over all the standard C string
functions, getopt, etc. while still handling non-ASCII properly.
R=mark@chromium.org
BUG=crashpad:1
Review URL: https://codereview.chromium.org/1119783005
At the moment the LOGs print something unhelpful like:
[19912:21888:20150501,145958.098:ERROR file_io_win.cc:122] CreateFile 000000C9F8FDE7F0: The system cannot find the file specified. (0x2)
(where the hex string ought to be a file name)
R=mark@chromium.org
BUG=crashpad:1
Review URL: https://codereview.chromium.org/1117393002
