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DEFINE_bool(child, false, "");
namespace {
constexpr int kSignal = SIGUSR1;
} // namespace
void runChild(const char* file) {
// Block SIGUSR1 so it's queued
sigset_t sigs;
CHECK_ERR(sigemptyset(&sigs));
CHECK_ERR(sigaddset(&sigs, kSignal));
CHECK_ERR(sigprocmask(SIG_BLOCK, &sigs, nullptr));
// Kill the parent, wait for our signal.
CHECK_ERR(kill(getppid(), SIGKILL));
int sig = 0;
CHECK_ERR(sigwait(&sigs, &sig));
CHECK_EQ(sig, kSignal);
// Signal completion by creating the file
CHECK_ERR(creat(file, 0600));
}
[[noreturn]] void runParent(const char* file) {
std::vector<std::string> args{"/proc/self/exe", "--child", file};
Subprocess proc(args, Subprocess::Options().parentDeathSignal(kSignal));
CHECK(proc.poll().running());
// The child will kill us.
for (;;) {
pause();
}
}
int main(int argc, char* argv[]) {
gflags::ParseCommandLineFlags(&argc, &argv, true);
CHECK_EQ(argc, 2);
if (FLAGS_child) {
runChild(argv[1]);
} else {
runParent(argv[1]);
}
return 0;
}
/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2020 - Raw Material Software Limited
JUCE is an open source library subject to commercial or open-source
licensing.
By using JUCE, you agree to the terms of both the JUCE 6 End-User License
Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
End User License Agreement: www.juce.com/juce-6-licence
Privacy Policy: www.juce.com/juce-privacy-policy
Or: You may also use this code under the terms of the GPL v3 (see
www.gnu.org/licenses).
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
{
Image JUCE_API getIconFromApplication (const String&, int) { return {}; }
}
/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2020 - Raw Material Software Limited
JUCE is an open source library subject to commercial or open-source
licensing.
By using JUCE, you agree to the terms of both the JUCE 6 End-User License
Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
End User License Agreement: www.juce.com/juce-6-licence
Privacy Policy: www.juce.com/juce-privacy-policy
Or: You may also use this code under the terms of the GPL v3 (see
www.gnu.org/licenses).
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
DISCLAIMED.