waybar/src/main.cpp

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#include <csignal>
#include <list>
#include <sys/types.h>
#include <sys/wait.h>
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#include <spdlog/spdlog.h>
#include "client.hpp"
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sig_atomic_t is_inserting_pid = false;
std::list<pid_t> reap;
static void handler(int sig) {
int saved_errno = errno;
if (!is_inserting_pid) {
for (auto it = reap.begin(); it != reap.end(); ++it) {
if (waitpid(*it, nullptr, WNOHANG) == *it) {
it = reap.erase(it);
}
}
}
errno = saved_errno;
}
inline void installSigChldHandler(void) {
struct sigaction sa;
sigemptyset(&sa.sa_mask);
sa.sa_handler = handler;
sigaction(SIGCHLD, &sa, nullptr);
}
int main(int argc, char* argv[]) {
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try {
auto client = waybar::Client::inst();
std::signal(SIGUSR1, [](int /*signal*/) {
for (auto& bar : waybar::Client::inst()->bars) {
bar->toggle();
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}
});
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for (int sig = SIGRTMIN + 1; sig <= SIGRTMAX; ++sig) {
std::signal(sig, [](int sig) {
for (auto& bar : waybar::Client::inst()->bars) {
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bar->handleSignal(sig);
}
});
}
installSigChldHandler();
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auto ret = client->main(argc, argv);
delete client;
return ret;
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} catch (const std::exception& e) {
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spdlog::error("{}", e.what());
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return 1;
} catch (const Glib::Exception& e) {
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spdlog::error("{}", static_cast<std::string>(e.what()));
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return 1;
}
}