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CXPlatProcess.cpp
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/*
Copyright [2010] [Richard Bross]
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
// Implementation of Process functions.
//
//////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "CXPlatProcess.h"
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CXPlatProcess::CXPlatProcess()
{
hProcess = 0;
}
CXPlatProcess::CXPlatProcess( char *szProcess, BOOL bHide, BOOL bWait, BOOL bInheritHandles )
{
hProcess = 0;
LaunchHiddenProcess( szProcess, bHide, bWait, bInheritHandles );
return;
}
CXPlatProcess::~CXPlatProcess()
{
}
int CXPlatProcess::Launch( char *szProcess, BOOL bHide, BOOL bWait, BOOL bInheritHandles )
{
return LaunchHiddenProcess( szProcess, bHide, bWait, bInheritHandles );
}
XPLAT_HANDLE CXPlatProcess::GetProcessHandle( void )
{
return hProcess;
}
// Launch a secondary process
int CXPlatProcess::LaunchHiddenProcess(char *szProcess, BOOL bHide, BOOL bWait, BOOL bInheritHandles)
{
#if defined(_WIN32)
STARTUPINFO sSUInfo;
PROCESS_INFORMATION sPI;
MSG sMsg;
// Create the process
memset(&sSUInfo, 0, sizeof(sSUInfo));
sSUInfo.cb = sizeof(sSUInfo);
memset(&sPI, 0, sizeof(sPI));
// If hidden . . .
if (bHide)
{
sSUInfo.dwFlags = STARTF_USESHOWWINDOW;
sSUInfo.wShowWindow = SW_HIDE;
};
// If a 16 bit program, load in our own VDM and wait for the VDM to terminate
if (!::CreateProcess( NULL,
szProcess,
NULL,
NULL,
bInheritHandles,
CREATE_SEPARATE_WOW_VDM | CREATE_NEW_CONSOLE,
NULL,
NULL,
&sSUInfo,
&sPI))
{
return(-1);
};
// If it's a 16 bit, we have to process messages or we get deadlock
while(bWait && ::WaitForSingleObject(sPI.hProcess, 1) == WAIT_TIMEOUT)
{
while (::PeekMessage(&sMsg, NULL, 0, 0, PM_REMOVE))
{
::TranslateMessage(&sMsg);
::DispatchMessage(&sMsg);
}
};
hProcess = sPI.hProcess;
return(sPI.dwProcessId);
#else
// unix
char szCommand[1024];
int tPID = 0;
//execute start script
strncpy( szCommand, szProcess, sizeof(szCommand)-1 );
#if defined(__linux)
// NOTE: scheduling prty must be set
setpriority(PRIO_PROCESS, 0, 0);
#endif
strcat( szCommand, " &" );
tPID = system( szCommand );
return tPID;
#endif
};