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OS/2 Shareware BBS: 10 Tools
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OCL
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OPipeTool.cpp
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1996-08-12
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// OCL - OS/2 Class Library
// (c) Cubus 1995
// All Rights Reserved
// OPipeTool.cpp
/*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Neither the name Cubus nor the name Team OCL may be used to
* endorse or promote products derived from this software
* without specific prior written permission.
* 3. See OCL.INF for a detailed copyright notice.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
// $Header: W:/Projects/OCL/Source/rcs/OPipeTool.cpp 1.50 1996/08/11 23:49:27 B.STEIN Release $
#define __OCL_SOURCE__
#define OINCL_OSTRING
#define OINCL_BASE
#include <ocl.hpp>
#include <OPipeTool.hpp>
#if defined(__EMX__)
template class OThread<OPipeTool>;
#endif
OPipeTool::OPipeTool(PCSZ exename, PCSZ parms,
const ULONG sessionType,
const ULONG pipeBuffer)
: printer(this, &OPipeTool::printout, 8192, FALSE),
bufferSize(pipeBuffer),
pipe(pipeBuffer),
readBuffer(pipeBuffer),
sType(sessionType),
childName(exename),
childParms(parms),
childPID(0),
childSID(0)
{}
OPipeTool::~OPipeTool()
{}
PSZ OPipeTool::isOfType() const
{
return("OPipeTool");
}
void OPipeTool::detachChild()
{
APIRET rc;
STARTDATA StartData;
HFILE hfNewStdOut = -1,
hfNewStdErr = -1,
hfStdOut = 1,
hfStdErr = 2;
OString Title("Spawned: ");
// Duplicate handles
DosDupHandle(hfStdOut, &hfNewStdOut);
DosDupHandle(hfStdErr, &hfNewStdErr);
// Close existing handles for current process
DosClose(hfStdOut);
DosClose(hfStdErr);
// Redirect existing handles to new file
DosDupHandle(pipe.ofh, &hfStdOut);
DosDupHandle(pipe.ofh, &hfStdErr);
// start printout thread
if (!printer.isRunning())
printer.run();
// Start new session
Title + childName;
memset(&StartData, 0, sizeof(STARTDATA));
StartData.Length = sizeof(STARTDATA);
StartData.Related = SSF_RELATED_CHILD;
StartData.FgBg = SSF_FGBG_BACK;
StartData.TraceOpt = SSF_TRACEOPT_NONE;
StartData.PgmTitle = Title;
StartData.PgmName = childName;
StartData.PgmInputs = (PBYTE) childParms.getText();
StartData.InheritOpt = SSF_INHERTOPT_PARENT;
StartData.SessionType = sType;
StartData.PgmControl = SSF_CONTROL_INVISIBLE;
rc = DosStartSession(&StartData, &childSID, &childPID);
// Get back original handles
DosDupHandle(hfNewStdOut, &hfStdOut);
DosDupHandle(hfNewStdErr, &hfStdErr);
DosClose(hfNewStdOut);
DosClose(hfNewStdErr);
if (rc != 0)
throw OVioException("Spawn failed.", rc);
}
void OPipeTool::stopChild()
{
APIRET rc;
if (!childPID)
return;
if ((rc = DosKillProcess(DKP_PROCESS, childPID)) != 0)
throw OVioException("Killing spawnded process failed.", rc);
childSID = 0;
childPID = 0;
}
void OPipeTool::printout()
{
while(pipe) {
if (pipe.getline(readBuffer, bufferSize))
cout << (PSZ)readBuffer << endl; }
}
// end of source