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4893a9b76d
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 .
98 lines
3.5 KiB
C++
98 lines
3.5 KiB
C++
// Copyright 2015 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef CRASHPAD_UTIL_WIN_EXCEPTION_HANDLER_SERVER_H_
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#define CRASHPAD_UTIL_WIN_EXCEPTION_HANDLER_SERVER_H_
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#include <set>
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#include <string>
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#include "base/basictypes.h"
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#include "base/synchronization/lock.h"
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#include "util/win/address_types.h"
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#include "util/win/scoped_handle.h"
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namespace crashpad {
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namespace internal {
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class PipeServiceContext;
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class ClientData;
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} // namespace internal
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//! \brief Runs the main exception-handling server in Crashpad's handler
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//! process.
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class ExceptionHandlerServer {
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public:
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class Delegate {
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public:
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virtual ~Delegate();
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//! \brief Called when the server has created the named pipe connection
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//! points and is ready to service requests.
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virtual void ExceptionHandlerServerStarted() = 0;
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//! \brief Called when the client has signalled that it has encountered an
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//! exception and so wants a crash dump to be taken.
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//!
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//! \param[in] process A handle to the client process. Ownership of the
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//! lifetime of this handle is not passed to the delegate.
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//! \param[in] exception_information_address The address in the client's
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//! address space of an ExceptionInformation structure.
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//! \param[in] debug_critical_section_address The address in the client's
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//! address space of a `CRITICAL_SECTION` allocated with a valid
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//! `.DebugInfo` field, or `0` if unavailable.
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//! \return The exit code that should be used when terminating the client
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//! process.
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virtual unsigned int ExceptionHandlerServerException(
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HANDLE process,
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WinVMAddress exception_information_address,
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WinVMAddress debug_critical_section_address) = 0;
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};
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//! \brief Constructs the exception handling server.
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ExceptionHandlerServer();
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~ExceptionHandlerServer();
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//! \brief Runs the exception-handling server.
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//!
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//! \param[in] delegate The interface to which the exceptions are delegated
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//! when they are caught in Run(). Ownership is not transferred.
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//! \param[in] pipe_name The name of the pipe to listen on. Must be of the
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//! form "\\.\pipe\<some_name>".
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void Run(Delegate* delegate, const std::string& pipe_name);
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//! \brief Stops the exception-handling server. Returns immediately. The
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//! object must not be destroyed until Run() returns.
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void Stop();
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private:
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static bool ServiceClientConnection(
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const internal::PipeServiceContext& service_context);
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static DWORD __stdcall PipeServiceProc(void* ctx);
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static void __stdcall OnCrashDumpEvent(void* ctx, BOOLEAN);
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static void __stdcall OnNonCrashDumpEvent(void* ctx, BOOLEAN);
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static void __stdcall OnProcessEnd(void* ctx, BOOLEAN);
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ScopedKernelHANDLE port_;
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base::Lock clients_lock_;
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std::set<internal::ClientData*> clients_;
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DISALLOW_COPY_AND_ASSIGN(ExceptionHandlerServer);
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};
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} // namespace crashpad
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#endif // CRASHPAD_UTIL_WIN_EXCEPTION_HANDLER_SERVER_H_
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