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douglas |
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// Spectre 2 |
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// |
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// Douglas Thrift |
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// |
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// $Id$ |
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#include <menes/platform.hpp> |
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#include <menes-api/console.hpp> |
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#include <menes-api/exename.hpp> |
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#include <menes-api/files.hpp> |
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#include <menes-app/application.hpp> |
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#include <menes-ext/string.hpp> |
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#include <menes-ios/helpers.hpp> |
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#include <sys/resource.h> |
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#include <sys/time.h> |
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#include <sys/types.h> |
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#include <sys/wait.h> |
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#include <signal.h> |
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#include <unistd.h> |
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#include "Matcher/Matcher.hpp" |
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// XXX: Menes' linker is linking too much |
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namespace Spectre2 |
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{ |
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bool debug(false); |
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} |
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ext::String pid("spectre.pid"); |
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inline int usage(int code = 0) |
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{ |
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api::Cerr << "Usage: " << api::GetExecutablePath().GetName() << " start|stop|restart|reload|status [...]" << ios::NewLine; |
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return code; |
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} |
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inline pid_t process() |
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{ |
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api::FileReader fin(pid); |
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return lexical_cast<pid_t>(ios::ReadLine(fin)); |
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} |
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void start(const app::ArgumentList& args); |
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void stop(); |
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inline void restart(const app::ArgumentList& args) { stop(); start(args); } |
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void reload(); |
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void status(); |
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struct Spectre2Control : public app::Application |
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{ |
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virtual int Run(const app::ArgumentList& args) |
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{ |
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enum Command { Start, Stop, Restart, Reload, Status } command; |
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if (!args.IsEmpty()) |
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{ |
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const ext::String& arg(args.First()); |
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if (arg == "start") command = Start; |
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else if (arg == "stop") command = Stop; |
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else if (arg == "restart") command = Restart; |
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else if (arg == "reload") command = Reload; |
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else if (arg == "status") command = Status; |
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else return usage(1); |
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_foreach (app::ArgumentList, arg, args) |
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{ |
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Matcher matcher("^-pid=(.*)$"); |
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if (*arg == matcher) pid = matcher[1]; |
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} |
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} |
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else return usage(); |
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switch (command) |
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{ |
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case Start: |
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start(args); |
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break; |
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case Stop: |
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stop(); |
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break; |
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case Restart: |
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restart(args); |
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break; |
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case Reload: |
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reload(); |
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break; |
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case Status: |
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status(); |
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} |
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return 0; |
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} |
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} spectreControl; |
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void start(const app::ArgumentList& args) |
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{ |
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api::Cout << "Starting Spectre daemon ... " << ios::Flush; |
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if (pid_t process = api::Posix::CheckError(::fork())) |
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{ |
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api::Cout << "started." << ios::NewLine; |
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} |
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else |
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{ |
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_L<const char*> argv; |
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argv.Reserve(args.GetSize()); |
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_foreach (app::ArgumentList, arg, args) argv.InsertLast(arg->NullTerminate()); |
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ext::String command(api::GetExecutablePath().GetParent() + "Spectre2"); |
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argv.First() = command.NullTerminate(); |
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api::Posix::CheckError(::execv(command.NullTerminate(), const_cast<char**>(argv.NullTerminate()))); |
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} |
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} |
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void stop() |
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{ |
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api::Cout << "Stopping Spectre daemon ... " << ios::Flush; |
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try |
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{ |
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pid_t id(process()); |
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api::Posix::CheckError(::kill(id, SIGTERM)); |
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// XXX: somehow wait for it to terminate |
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api::Cout << "stopped." << ios::NewLine; |
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} |
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catch (ext::Exception) { api::Cout << "failed." << ios::NewLine; } |
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} |
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void reload() |
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{ |
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api::Cout << "Reloading Spectre daemon ... " << ios::Flush; |
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try |
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{ |
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douglas |
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api::Posix::CheckError(::kill(process(), SIGUSR1)); |
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douglas |
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api::Cout << "reloaded." << ios::NewLine; |
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} |
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catch (ext::Exception) { api::Cout << "failed." << ios::NewLine; } |
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} |
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void status() |
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{ |
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} |
