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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
#include "common.h"
#include "diagnosticserver.h"
#include "eventpipeprotocolhelper.h"
#include "dumpdiagnosticprotocolhelper.h"
#include "profilerdiagnosticprotocolhelper.h"
#include "diagnosticsprotocol.h"
#ifdef FEATURE_PAL
#include "pal.h"
#endif // FEATURE_PAL
#ifdef FEATURE_AUTO_TRACE
#include "autotrace.h"
#endif
#ifdef FEATURE_PERFTRACING
IpcStream::DiagnosticsIpc *DiagnosticServer::s_pIpc = nullptr;
static DWORD WINAPI DiagnosticsServerThread(LPVOID lpThreadParameter)
{
CONTRACTL
{
NOTHROW;
GC_TRIGGERS;
MODE_PREEMPTIVE;
PRECONDITION(lpThreadParameter != nullptr);
}
CONTRACTL_END;
auto pIpc = reinterpret_cast<IpcStream::DiagnosticsIpc *>(lpThreadParameter);
if (pIpc == nullptr)
{
STRESS_LOG0(LF_DIAGNOSTICS_PORT, LL_ERROR, "Diagnostics IPC listener was undefined\n");
return 1;
}
ErrorCallback LoggingCallback = [](const char *szMessage, uint32_t code) {
STRESS_LOG2(LF_DIAGNOSTICS_PORT, LL_WARNING, "warning (%d): %s.\n", code, szMessage);
};
EX_TRY
{
while (true)
{
// FIXME: Ideally this would be something like a std::shared_ptr
IpcStream *pStream = pIpc->Accept(LoggingCallback);
if (pStream == nullptr)
continue;
#ifdef FEATURE_AUTO_TRACE
auto_trace_signal();
#endif
DiagnosticsIpc::IpcMessage message;
if (!message.Initialize(pStream))
{
DiagnosticsIpc::IpcMessage::SendErrorMessage(pStream, CORDIAGIPC_E_BAD_ENCODING);
delete pStream;
continue;
}
if (::strcmp((char *)message.GetHeader().Magic, (char *)DiagnosticsIpc::DotnetIpcMagic_V1.Magic) != 0)
{
DiagnosticsIpc::IpcMessage::SendErrorMessage(pStream, CORDIAGIPC_E_UNKNOWN_MAGIC);
delete pStream;
continue;
}
switch ((DiagnosticsIpc::DiagnosticServerCommandSet)message.GetHeader().CommandSet)
{
case DiagnosticsIpc::DiagnosticServerCommandSet::EventPipe:
EventPipeProtocolHelper::HandleIpcMessage(message, pStream);
break;
#ifdef FEATURE_PAL
case DiagnosticsIpc::DiagnosticServerCommandSet::Dump:
DumpDiagnosticProtocolHelper::HandleIpcMessage(message, pStream);
break;
#endif
#ifdef FEATURE_PROFAPI_ATTACH_DETACH
case DiagnosticsIpc::DiagnosticServerCommandSet::Profiler:
ProfilerDiagnosticProtocolHelper::AttachProfiler(message, pStream);
break;
#endif // FEATURE_PROFAPI_ATTACH_DETACH
default:
STRESS_LOG1(LF_DIAGNOSTICS_PORT, LL_WARNING, "Received unknown request type (%d)\n", message.GetHeader().CommandSet);
DiagnosticsIpc::IpcMessage::SendErrorMessage(pStream, CORDIAGIPC_E_UNKNOWN_COMMAND);
delete pStream;
break;
}
}
}
EX_CATCH
{
STRESS_LOG0(LF_DIAGNOSTICS_PORT, LL_ERROR, "Exception caught in diagnostic thread. Leaving thread now.\n");
_ASSERTE(!"Hit an error in the diagnostic server thread\n.");
}
EX_END_CATCH(SwallowAllExceptions);
return 0;
}
bool DiagnosticServer::Initialize()
{
CONTRACTL
{
NOTHROW;
GC_TRIGGERS;
MODE_ANY;
}
CONTRACTL_END;
bool fSuccess = false;
EX_TRY
{
auto ErrorCallback = [](const char *szMessage, uint32_t code) {
STRESS_LOG2(
LF_DIAGNOSTICS_PORT, // facility
LL_ERROR, // level
"Failed to create diagnostic IPC: error (%d): %s.\n", // msg
code, // data1
szMessage); // data2
};
// TODO: Should we handle/assert that (s_pIpc == nullptr)?
s_pIpc = IpcStream::DiagnosticsIpc::Create(
"dotnet-diagnostic", ErrorCallback);
if (s_pIpc != nullptr)
{
#ifdef FEATURE_AUTO_TRACE
auto_trace_init();
auto_trace_launch();
#endif
DWORD dwThreadId = 0;
HANDLE hThread = ::CreateThread( // TODO: Is it correct to have this "lower" level call here?
nullptr, // no security attribute
0, // default stack size
DiagnosticsServerThread, // thread proc
(LPVOID)s_pIpc, // thread parameter
0, // not suspended
&dwThreadId); // returns thread ID
if (hThread == nullptr)
{
// Failed to create IPC thread.
STRESS_LOG1(
LF_DIAGNOSTICS_PORT, // facility
LL_ERROR, // level
"Failed to create diagnostic server thread (%d).\n", // msg
::GetLastError()); // data1
}
else
{
#ifdef FEATURE_AUTO_TRACE
auto_trace_wait();
#endif
// FIXME: Maybe hold on to the thread to abort/cleanup at exit?
::CloseHandle(hThread);
// TODO: Add error handling?
fSuccess = true;
}
}
}
EX_CATCH
{
// TODO: Should we log anything here?
}
EX_END_CATCH(SwallowAllExceptions);
return fSuccess;
}
bool DiagnosticServer::Shutdown()
{
CONTRACTL
{
NOTHROW;
GC_TRIGGERS;
MODE_ANY;
}
CONTRACTL_END;
bool fSuccess = false;
EX_TRY
{
if (s_pIpc != nullptr)
{
auto ErrorCallback = [](const char *szMessage, uint32_t code) {
STRESS_LOG2(
LF_DIAGNOSTICS_PORT, // facility
LL_ERROR, // level
"Failed to unlink diagnostic IPC: error (%d): %s.\n", // msg
code, // data1
szMessage); // data2
};
s_pIpc->Unlink(ErrorCallback);
}
fSuccess = true;
}
EX_CATCH
{
fSuccess = false;
// TODO: Should we log anything here?
}
EX_END_CATCH(SwallowAllExceptions);
return fSuccess;
}
#endif // FEATURE_PERFTRACING
|
