juicysfplugin/modules/juce_core/threads/juce_ChildProcess.cpp

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/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2017 - ROLI Ltd.
JUCE is an open source library subject to commercial or open-source
licensing.
The code included in this file is provided under the terms of the ISC license
http://www.isc.org/downloads/software-support-policy/isc-license. Permission
To use, copy, modify, and/or distribute this software for any purpose with or
without fee is hereby granted provided that the above copyright notice and
this permission notice appear in all copies.
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
DISCLAIMED.
==============================================================================
*/
namespace juce
{
ChildProcess::ChildProcess() {}
ChildProcess::~ChildProcess() {}
bool ChildProcess::isRunning() const
{
return activeProcess != nullptr && activeProcess->isRunning();
}
int ChildProcess::readProcessOutput (void* dest, int numBytes)
{
return activeProcess != nullptr ? activeProcess->read (dest, numBytes) : 0;
}
bool ChildProcess::kill()
{
return activeProcess == nullptr || activeProcess->killProcess();
}
uint32 ChildProcess::getExitCode() const
{
return activeProcess != nullptr ? activeProcess->getExitCode() : 0;
}
bool ChildProcess::waitForProcessToFinish (const int timeoutMs) const
{
auto timeoutTime = Time::getMillisecondCounter() + (uint32) timeoutMs;
do
{
if (! isRunning())
return true;
Thread::sleep (2);
}
while (timeoutMs < 0 || Time::getMillisecondCounter() < timeoutTime);
return false;
}
String ChildProcess::readAllProcessOutput()
{
MemoryOutputStream result;
for (;;)
{
char buffer[512];
auto num = readProcessOutput (buffer, sizeof (buffer));
if (num <= 0)
break;
result.write (buffer, (size_t) num);
}
return result.toString();
}
//==============================================================================
#if JUCE_UNIT_TESTS
class ChildProcessTests : public UnitTest
{
public:
ChildProcessTests() : UnitTest ("ChildProcess", "Threads") {}
void runTest() override
{
beginTest ("Child Processes");
#if JUCE_WINDOWS || JUCE_MAC || JUCE_LINUX
ChildProcess p;
#if JUCE_WINDOWS
expect (p.start ("tasklist"));
#else
expect (p.start ("ls /"));
#endif
//String output (p.readAllProcessOutput());
//expect (output.isNotEmpty());
#endif
}
};
static ChildProcessTests childProcessUnitTests;
#endif
} // namespace juce