172d37d3b9
This implements Host::LaunchProcess for windows, and in doing so does some minor refactor to move towards a more modular process launching design. The original motivation for this is that launching processes on windows needs some very windows specific code, which would live most appropriately in source/Host/windows somewhere. However, there is already some common code that all platforms use when launching a process before delegating to the platform specific stuff, which lives in source/Host/common/Host.cpp which would be nice to reuse without duplicating. This commonality has been abstracted into MonitoringProcessLauncher, a class which abstracts out the notion of launching a process using an arbitrary algorithm, and then monitoring it for state changes. The windows specific launching code lives in ProcessLauncherWindows, and the posix specific launching code lives in ProcessLauncherPosix. When launching a process MonitoringProcessLauncher is created, and then an appropriate delegate launcher is created and given to the MonitoringProcessLauncher. Reviewed by: Greg Clayton Differential Revision: http://reviews.llvm.org/D5781 llvm-svn: 219731
95 lines
3.0 KiB
C++
95 lines
3.0 KiB
C++
//===-- ProcessLauncherWindows.cpp ------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Host/HostProcess.h"
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#include "lldb/Host/windows/ProcessLauncherWindows.h"
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#include "lldb/Target/ProcessLaunchInfo.h"
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#include <string>
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#include <vector>
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using namespace lldb;
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using namespace lldb_private;
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HostProcess
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ProcessLauncherWindows::LaunchProcess(const ProcessLaunchInfo &launch_info, Error &error)
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{
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error.Clear();
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std::string executable;
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std::string commandLine;
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std::vector<char> environment;
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STARTUPINFO startupinfo = {0};
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PROCESS_INFORMATION pi = {0};
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HANDLE stdin_handle = GetStdioHandle(launch_info, STDIN_FILENO);
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HANDLE stdout_handle = GetStdioHandle(launch_info, STDOUT_FILENO);
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HANDLE stderr_handle = GetStdioHandle(launch_info, STDERR_FILENO);
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startupinfo.cb = sizeof(startupinfo);
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startupinfo.dwFlags |= STARTF_USESTDHANDLES;
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startupinfo.hStdError = stderr_handle;
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startupinfo.hStdInput = stdin_handle;
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startupinfo.hStdOutput = stdout_handle;
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executable = launch_info.GetExecutableFile().GetPath();
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launch_info.GetArguments().GetQuotedCommandString(commandLine);
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BOOL result = ::CreateProcessA(executable.c_str(), const_cast<char *>(commandLine.c_str()), NULL, NULL, TRUE, CREATE_NEW_CONSOLE, NULL,
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launch_info.GetWorkingDirectory(), &startupinfo, &pi);
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if (result)
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{
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// Do not call CloseHandle on pi.hProcess, since we want to pass that back through the HostProcess.
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::CloseHandle(pi.hThread);
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}
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if (stdin_handle)
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::CloseHandle(stdin_handle);
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if (stdout_handle)
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::CloseHandle(stdout_handle);
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if (stderr_handle)
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::CloseHandle(stderr_handle);
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if (!result)
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error.SetError(::GetLastError(), eErrorTypeWin32);
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return HostProcess(pi.hProcess);
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}
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HANDLE
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ProcessLauncherWindows::GetStdioHandle(const ProcessLaunchInfo &launch_info, int fd)
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{
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const FileAction *action = launch_info.GetFileActionForFD(fd);
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if (action == nullptr)
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return NULL;
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SECURITY_ATTRIBUTES secattr = {0};
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secattr.nLength = sizeof(SECURITY_ATTRIBUTES);
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secattr.bInheritHandle = TRUE;
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const char *path = action->GetPath();
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DWORD access = 0;
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DWORD share = FILE_SHARE_READ | FILE_SHARE_WRITE;
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DWORD create = 0;
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DWORD flags = 0;
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if (fd == STDIN_FILENO)
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{
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access = GENERIC_READ;
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create = OPEN_EXISTING;
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flags = FILE_ATTRIBUTE_READONLY;
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}
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if (fd == STDOUT_FILENO || fd == STDERR_FILENO)
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{
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access = GENERIC_WRITE;
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create = CREATE_ALWAYS;
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if (fd == STDERR_FILENO)
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flags = FILE_FLAG_WRITE_THROUGH;
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}
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HANDLE result = ::CreateFile(path, access, share, &secattr, create, flags, NULL);
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return (result == INVALID_HANDLE_VALUE) ? NULL : result;
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}
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