poco/Foundation/src/Process_WIN32U.cpp

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//
// Process_WIN32U.cpp
//
// $Id: //poco/1.4/Foundation/src/Process_WIN32U.cpp#4 $
//
// Library: Foundation
// Package: Processes
// Module: Process
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
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//
#include "Poco/Process_WIN32U.h"
#include "Poco/Exception.h"
#include "Poco/NumberFormatter.h"
#include "Poco/NamedEvent.h"
#include "Poco/UnicodeConverter.h"
#include "Poco/Pipe.h"
namespace Poco {
//
// ProcessHandleImpl
//
ProcessHandleImpl::ProcessHandleImpl(HANDLE hProcess, UInt32 pid):
_hProcess(hProcess),
_pid(pid)
{
}
ProcessHandleImpl::~ProcessHandleImpl()
{
closeHandle();
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}
void ProcessHandleImpl::closeHandle()
{
if (_hProcess)
{
CloseHandle(_hProcess);
_hProcess = NULL;
}
}
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UInt32 ProcessHandleImpl::id() const
{
return _pid;
}
HANDLE ProcessHandleImpl::process() const
{
return _hProcess;
}
int ProcessHandleImpl::wait() const
{
DWORD rc = WaitForSingleObject(_hProcess, INFINITE);
if (rc != WAIT_OBJECT_0)
throw SystemException("Wait failed for process", NumberFormatter::format(_pid));
DWORD exitCode;
if (GetExitCodeProcess(_hProcess, &exitCode) == 0)
throw SystemException("Cannot get exit code for process", NumberFormatter::format(_pid));
return exitCode;
}
//
// ProcessImpl
//
ProcessImpl::PIDImpl ProcessImpl::idImpl()
{
return GetCurrentProcessId();
}
void ProcessImpl::timesImpl(long& userTime, long& kernelTime)
{
FILETIME ftCreation;
FILETIME ftExit;
FILETIME ftKernel;
FILETIME ftUser;
if (GetProcessTimes(GetCurrentProcess(), &ftCreation, &ftExit, &ftKernel, &ftUser) != 0)
{
ULARGE_INTEGER time;
time.LowPart = ftKernel.dwLowDateTime;
time.HighPart = ftKernel.dwHighDateTime;
kernelTime = long(time.QuadPart/10000000L);
time.LowPart = ftUser.dwLowDateTime;
time.HighPart = ftUser.dwHighDateTime;
userTime = long(time.QuadPart/10000000L);
}
else
{
userTime = kernelTime = -1;
}
}
ProcessHandleImpl* ProcessImpl::launchImpl(const std::string& command, const ArgsImpl& args, const std::string& initialDirectory, Pipe* inPipe, Pipe* outPipe, Pipe* errPipe, const EnvImpl& env)
{
std::string commandLine = command;
for (ArgsImpl::const_iterator it = args.begin(); it != args.end(); ++it)
{
commandLine.append(" ");
commandLine.append(*it);
}
std::wstring ucommandLine;
UnicodeConverter::toUTF16(commandLine, ucommandLine);
STARTUPINFOW startupInfo;
GetStartupInfoW(&startupInfo); // take defaults from current process
startupInfo.cb = sizeof(STARTUPINFOW);
startupInfo.lpReserved = NULL;
startupInfo.lpDesktop = NULL;
startupInfo.lpTitle = NULL;
startupInfo.dwFlags = STARTF_FORCEOFFFEEDBACK;
startupInfo.cbReserved2 = 0;
startupInfo.lpReserved2 = NULL;
HANDLE hProc = GetCurrentProcess();
bool mustInheritHandles = false;
if (inPipe)
{
DuplicateHandle(hProc, inPipe->readHandle(), hProc, &startupInfo.hStdInput, 0, TRUE, DUPLICATE_SAME_ACCESS);
mustInheritHandles = true;
inPipe->close(Pipe::CLOSE_READ);
}
else if (GetStdHandle(STD_INPUT_HANDLE))
{
DuplicateHandle(hProc, GetStdHandle(STD_INPUT_HANDLE), hProc, &startupInfo.hStdInput, 0, TRUE, DUPLICATE_SAME_ACCESS);
mustInheritHandles = true;
}
else
{
startupInfo.hStdInput = 0;
}
// outPipe may be the same as errPipe, so we duplicate first and close later.
if (outPipe)
{
DuplicateHandle(hProc, outPipe->writeHandle(), hProc, &startupInfo.hStdOutput, 0, TRUE, DUPLICATE_SAME_ACCESS);
mustInheritHandles = true;
}
else if (GetStdHandle(STD_OUTPUT_HANDLE))
{
DuplicateHandle(hProc, GetStdHandle(STD_OUTPUT_HANDLE), hProc, &startupInfo.hStdOutput, 0, TRUE, DUPLICATE_SAME_ACCESS);
mustInheritHandles = true;
}
else
{
startupInfo.hStdOutput = 0;
}
if (errPipe)
{
DuplicateHandle(hProc, errPipe->writeHandle(), hProc, &startupInfo.hStdError, 0, TRUE, DUPLICATE_SAME_ACCESS);
mustInheritHandles = true;
}
else if (GetStdHandle(STD_ERROR_HANDLE))
{
DuplicateHandle(hProc, GetStdHandle(STD_ERROR_HANDLE), hProc, &startupInfo.hStdError, 0, TRUE, DUPLICATE_SAME_ACCESS);
mustInheritHandles = true;
}
else
{
startupInfo.hStdError = 0;
}
if (outPipe) outPipe->close(Pipe::CLOSE_WRITE);
if (errPipe) errPipe->close(Pipe::CLOSE_WRITE);
if (mustInheritHandles)
{
startupInfo.dwFlags |= STARTF_USESTDHANDLES;
}
std::wstring uinitialDirectory;
UnicodeConverter::toUTF16(initialDirectory, uinitialDirectory);
const wchar_t* workingDirectory = uinitialDirectory.empty() ? 0 : uinitialDirectory.c_str();
const char* pEnv = 0;
std::vector<char> envChars;
if (!env.empty())
{
envChars = getEnvironmentVariablesBuffer(env);
pEnv = &envChars[0];
}
PROCESS_INFORMATION processInfo;
DWORD creationFlags = GetConsoleWindow() ? 0 : CREATE_NO_WINDOW;
BOOL rc = CreateProcessW(
NULL, // applicationName
const_cast<wchar_t*>(ucommandLine.c_str()),
NULL, // processAttributes
NULL, // threadAttributes
mustInheritHandles,
creationFlags,
(LPVOID) pEnv,
workingDirectory,
&startupInfo,
&processInfo
);
if (startupInfo.hStdInput) CloseHandle(startupInfo.hStdInput);
if (startupInfo.hStdOutput) CloseHandle(startupInfo.hStdOutput);
if (startupInfo.hStdError) CloseHandle(startupInfo.hStdError);
if (rc)
{
CloseHandle(processInfo.hThread);
return new ProcessHandleImpl(processInfo.hProcess, processInfo.dwProcessId);
}
else throw SystemException("Cannot launch process", command);
}
void ProcessImpl::killImpl(ProcessHandleImpl& handle)
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{
if (handle.process())
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{
if (TerminateProcess(handle.process(), 0) == 0)
{
handle.closeHandle();
throw SystemException("cannot kill process");
}
handle.closeHandle();
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}
}
void ProcessImpl::killImpl(PIDImpl pid)
{
HANDLE hProc = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
if (hProc)
{
if (TerminateProcess(hProc, 0) == 0)
{
CloseHandle(hProc);
throw SystemException("cannot kill process");
}
CloseHandle(hProc);
}
else
{
switch (GetLastError())
{
case ERROR_ACCESS_DENIED:
throw NoPermissionException("cannot kill process");
case ERROR_INVALID_PARAMETER:
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throw NotFoundException("cannot kill process");
default:
throw SystemException("cannot kill process");
}
}
}
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bool ProcessImpl::isRunningImpl(const ProcessHandleImpl& handle)
{
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bool result = true;
DWORD exitCode;
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BOOL rc = GetExitCodeProcess(handle.process(), &exitCode);
if (!rc || exitCode != STILL_ACTIVE) result = false;
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return result;
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}
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bool ProcessImpl::isRunningImpl(PIDImpl pid)
{
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HANDLE hProc = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid);
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bool result = true;
DWORD exitCode;
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BOOL rc = GetExitCodeProcess(hProc, &exitCode);
if (!rc || exitCode != STILL_ACTIVE) result = false;
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return result;
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}
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void ProcessImpl::requestTerminationImpl(PIDImpl pid)
{
NamedEvent ev(terminationEventName(pid));
ev.set();
}
std::string ProcessImpl::terminationEventName(PIDImpl pid)
{
std::string evName("POCOTRM");
NumberFormatter::appendHex(evName, pid, 8);
return evName;
}
} // namespace Poco