Replace ThreadWorker with scgi::ThreadScgi.

src/Makefile.am

@@ -125,6 +125,9 @@ libsub_root_a_SOURCES = \
 	rpc/tinyxml2/tinyxml2.cc \
 	rpc/nlohmann/json.h \
 	\
+	scgi/thread_scgi.cc \
+	scgi/thread_scgi.h \
+	\
 	session/session_manager.cc \
 	session/session_manager.h \
 	session/thread_session.cc \
@@ -195,9 +198,7 @@ libsub_root_a_SOURCES = \
 	option_parser.cc \
 	option_parser.h \
 	signal_handler.cc \
-	signal_handler.h \
-	thread_worker.cc \
-	thread_worker.h
+	signal_handler.h
 
 
 AM_CPPFLAGS = -I$(srcdir) -I$(top_srcdir) -DPACKAGE_DATADIR=\"$(pkgdatadir)\"

src/command_local.cc

@@ -185,7 +185,6 @@ cmd_file_append(const torrent::Object::list_type& args) {
 void
 initialize_command_local() {
   core::DownloadList*    dList = control->core()->download_list();
-  core::DownloadStore*   dStore = control->core()->download_store();
   torrent::ChunkManager* chunkManager = torrent::chunk_manager();
   torrent::FileManager*  fileManager = torrent::file_manager();
 

src/command_logging.cc

@@ -11,7 +11,6 @@
 #include "globals.h"
 #include "control.h"
 #include "command_helpers.h"
-#include "thread_worker.h"
 #include "core/download.h"
 #include "core/download_list.h"
 #include "core/manager.h"
@@ -135,12 +134,13 @@ initialize_command_logging() {
   CMD2_ANY_LIST    ("log.append_file",      std::bind(&apply_log_open, log_flag_append_file, std::placeholders::_2));
   CMD2_ANY_LIST    ("log.append_gz_file",   std::bind(&apply_log_open, log_flag_append_file, std::placeholders::_2));
 
-  CMD2_ANY_STRING_V("log.close",      std::bind(&torrent::log_close_output_str, std::placeholders::_2));
+  CMD2_ANY_STRING_V("log.close",            std::bind(&torrent::log_close_output_str, std::placeholders::_2));
 
-  CMD2_ANY_LIST    ("log.add_output", std::bind(&apply_log_add_output, std::placeholders::_2));
+  CMD2_ANY_LIST    ("log.add_output",       std::bind(&apply_log_add_output, std::placeholders::_2));
 
-  CMD2_ANY_STRING  ("log.execute",    std::bind(&apply_log, std::placeholders::_2, 0));
-  CMD2_ANY_STRING  ("log.vmmap.dump", std::bind(&log_vmmap_dump, std::placeholders::_2));
-  CMD2_ANY_STRING_V("log.rpc",        std::bind(&ThreadWorker::set_rpc_log, worker_thread, std::placeholders::_2));
-  CMD2_REDIRECT    ("log.xmlrpc",     "log.rpc"); // For backwards compatibility
+  CMD2_ANY_STRING  ("log.execute",          std::bind(&apply_log, std::placeholders::_2, 0));
+  CMD2_ANY_STRING  ("log.vmmap.dump",       std::bind(&log_vmmap_dump, std::placeholders::_2));
+  CMD2_ANY_STRING_V("log.rpc",              [](const auto&, const auto& str) { scgi_thread::set_rpc_log(str); });
+
+  CMD2_REDIRECT    ("log.xmlrpc", "log.rpc"); // For backwards compatibility
 }

src/command_network.cc

@@ -20,7 +20,6 @@
 #include "globals.h"
 #include "control.h"
 #include "command_helpers.h"
-#include "thread_worker.h"
 #include "core/download.h"
 #include "core/manager.h"
 #include "rpc/scgi.h"
@@ -79,7 +78,7 @@ initialize_rpc_handlers() {
 
 torrent::Object
 apply_scgi(const std::string& arg, int type) {
-  if (worker_thread->scgi() != NULL)
+  if (scgi_thread::scgi() != nullptr)
     throw torrent::input_error("SCGI already enabled.");
 
   initialize_rpc_handlers();
@@ -142,7 +141,7 @@ apply_scgi(const std::string& arg, int type) {
     throw torrent::input_error(e.what());
   }
 
-  worker_thread->set_scgi(scgi);
+  scgi_thread::set_scgi(scgi);
   return torrent::Object();
 }
 

src/control.cc

@@ -8,7 +8,6 @@
 #include <torrent/net/network_manager.h>
 #include <torrent/utils/directory_events.h>
 
-#include "thread_worker.h"
 #include "core/dht_manager.h"
 #include "core/download_store.h"
 #include "core/http_queue.h"
@@ -63,7 +62,7 @@ Control::initialize() {
   session_thread::manager()->start();
   session_thread::thread()->start_thread();
 
-  worker_thread->start_thread();
+  scgi_thread::thread()->start_thread();
 
   display::Canvas::initialize();
   display::Window::slot_schedule([this](display::Window* w, std::chrono::microseconds t) { m_display->schedule(w, t); });
@@ -90,6 +89,9 @@ Control::cleanup() {
   if(!display::Canvas::daemon())
     m_inputStdin->remove(torrent::this_thread::poll());
 
+  if (scgi_thread::thread()->is_active())
+    scgi_thread::thread()->stop_thread_wait();
+
   // Wait for all session files to be written.
   session_thread::thread()->stop_thread_wait();
 
@@ -109,7 +111,7 @@ Control::cleanup_exception() {
 
 bool
 Control::is_shutdown_completed() {
-  if (!m_shutdownQuick || worker_thread->is_active())
+  if (!m_shutdownQuick)
     return false;
 
   // Tracker requests can be disowned, so wait for these to
@@ -128,10 +130,10 @@ void
 Control::handle_shutdown() {
   rpc::commands.call_catch("event.system.shutdown", rpc::make_target(), "shutdown", "System shutdown event action failed: ");
 
-  if (!m_shutdownQuick) {
-    if (worker_thread->is_active())
-      worker_thread->stop_thread_wait();
+  if (scgi_thread::thread()->is_active())
+    scgi_thread::thread()->stop_thread_wait();
 
+  if (!m_shutdownQuick) {
     torrent::runtime::network_manager()->listen_close();
 
     m_directory_events->close();
@@ -141,9 +143,6 @@ Control::handle_shutdown() {
       torrent::this_thread::scheduler()->wait_for_ceil_seconds(&m_task_shutdown, 5s);
 
   } else {
-    if (worker_thread->is_active())
-      worker_thread->stop_thread_wait();
-
     m_core->shutdown(true);
   }
 

src/globals.cc

@@ -5,4 +5,3 @@
 rpc::ip_table_list ip_tables;
 
 Control*           control{};
-ThreadWorker*      worker_thread{};

src/globals.h

@@ -6,20 +6,33 @@
 #include "rpc/ip_table_list.h"
 
 class Control;
-class ThreadWorker;
 
 extern rpc::ip_table_list ip_tables;
 
 extern Control*      control;
 
-// TODO: Update to new thread model.
-extern ThreadWorker* worker_thread;
+namespace rpc {
+class SCgi;
+}
 
 namespace session {
-
 class SessionManager;
+}
 
-} // namespace session
+namespace scgi_thread {
+
+torrent::utils::Thread* thread();
+std::thread::id         thread_id();
+
+void                    callback(void* target, std::function<void ()>&& fn);
+void                    cancel_callback(void* target);
+void                    cancel_callback_and_wait(void* target);
+
+rpc::SCgi*              scgi();
+void                    set_scgi(rpc::SCgi* scgi);
+void                    set_rpc_log(const std::string& filename);
+
+} // namespace torrent::scgi_thread
 
 
 namespace session_thread {

src/main.cc

@@ -31,6 +31,7 @@
 #include "rpc/command_scheduler.h"
 #include "rpc/command_scheduler_item.h"
 #include "rpc/parse_commands.h"
+#include "scgi/thread_scgi.h"
 #include "session/thread_session.h"
 #include "ui/root.h"
 #include "utils/directory.h"
@@ -41,8 +42,6 @@
 #include "signal_handler.h"
 #include "option_parser.h"
 
-#include "thread_worker.h"
-
 #define LT_LOG(log_fmt, ...)                                    \
   lt_log_print(torrent::LOG_SYSTEM, "system: " log_fmt, __VA_ARGS__);
 
@@ -215,12 +214,9 @@ main(int argc, char** argv) {
     torrent::initialize();
     torrent::set_main_thread_slots(std::bind(&client_perform));
 
+    scgi::ThreadScgi::create_thread();
     session::ThreadSession::create_thread();
 
-    // TODO: Move to controller.
-    worker_thread = new ThreadWorker();
-    worker_thread->init_thread();
-
     // Initialize option handlers after libtorrent to ensure
     // torrent::ConnectionManager* are valid etc.
     initialize_commands();
@@ -535,11 +531,9 @@ main(int argc, char** argv) {
   delete control;
   control = nullptr;
 
+  scgi::ThreadScgi::destroy_thread();
   session::ThreadSession::destroy_thread();
 
-  delete worker_thread;
-  worker_thread = nullptr;
-
   torrent::log_cleanup();
 
   return 0;

src/rpc/scgi.cc

@@ -11,7 +11,6 @@
 
 #include "control.h"
 #include "globals.h"
-#include "thread_worker.h"
 #include "rpc/scgi_task.h"
 #include "utils/socket_fd.h"
 
@@ -93,7 +92,7 @@ SCgi::open(void* sa, unsigned int length) {
 
 void
 SCgi::activate() {
-  assert(std::this_thread::get_id() == worker_thread->thread_id() && "SCgi::activate() must be called from the worker thread.");
+  assert(torrent::this_thread::thread() == scgi_thread::thread());
 
   torrent::this_thread::poll()->open(this);
   torrent::this_thread::poll()->insert_read(this);
@@ -102,7 +101,7 @@ SCgi::activate() {
 
 void
 SCgi::deactivate() {
-  assert(std::this_thread::get_id() == worker_thread->thread_id() && "SCgi::deactivate() must be called from the worker thread.");
+  assert(torrent::this_thread::thread() == scgi_thread::thread());
 
   torrent::this_thread::poll()->remove_and_close(this);
 }

src/scgi/thread_scgi.cc

@@ -0,0 +1,143 @@
+#include "config.h"
+
+#include "scgi/thread_scgi.h"
+
+#include <fcntl.h>
+#include <unistd.h>
+#include <rak/path.h>
+#include <torrent/exceptions.h>
+#include <torrent/utils/log.h>
+
+#include "rpc/scgi.h"
+
+namespace scgi {
+
+class ThreadScgiInternal {
+public:
+  static ThreadScgi* thread_scgi() { return ThreadScgi::internal_thread_scgi(); }
+};
+
+ThreadScgi* ThreadScgi::m_thread_scgi{};
+
+void
+ThreadScgi::create_thread() {
+  auto thread = new ThreadScgi;
+
+  m_thread_scgi          = thread;
+  m_thread_scgi->m_state = STATE_INITIALIZED;
+}
+
+void
+ThreadScgi::destroy_thread() {
+  delete m_thread_scgi;
+  m_thread_scgi = nullptr;
+}
+
+ThreadScgi*
+ThreadScgi::thread_scgi() {
+  return m_thread_scgi;
+}
+
+// TODO: Remove '= 0'.
+void
+ThreadScgi::init_thread() {
+}
+
+void
+ThreadScgi::cleanup_thread() {
+  if (m_scgi != nullptr)
+    m_scgi.load()->deactivate();
+}
+
+rpc::SCgi*
+ThreadScgi::scgi() {
+  return m_scgi;
+}
+
+bool
+ThreadScgi::set_scgi(rpc::SCgi* scgi) {
+  rpc::SCgi* expected = nullptr;
+
+  if (!m_scgi.compare_exchange_strong(expected, scgi))
+    return false;
+
+  change_rpc_log();
+
+  callback(nullptr, [this]() {
+      if (m_scgi == NULL)
+        throw torrent::internal_error("Tried to start SCGI but object was not present.");
+
+      m_scgi.load()->activate();
+    });
+
+  return true;
+}
+
+void
+ThreadScgi::set_rpc_log(const std::string& filename) {
+  callback(nullptr, [this, filename]() {
+      m_rpc_log_filename = filename;
+      change_rpc_log();
+    });
+}
+
+void
+ThreadScgi::change_rpc_log() {
+  if (scgi() == NULL)
+    return;
+
+  if (scgi()->log_fd() != -1) {
+    ::close(scgi()->log_fd());
+    scgi()->set_log_fd(-1);
+    lt_log_print(torrent::LOG_NOTICE, "Closed RPC log.", 0);
+  }
+
+  if (m_rpc_log_filename.empty())
+    return;
+
+  scgi()->set_log_fd(open(rak::path_expand(m_rpc_log_filename).c_str(), O_WRONLY | O_APPEND | O_CREAT, 0644));
+
+  if (scgi()->log_fd() == -1) {
+    lt_log_print(torrent::LOG_NOTICE, "Could not open RPC log file '%s'.", m_rpc_log_filename.c_str());
+    return;
+  }
+
+  lt_log_print(torrent::LOG_NOTICE, "Logging RPC events to '%s'.", m_rpc_log_filename.c_str());
+}
+
+void
+ThreadScgi::call_events() {
+  if ((m_flags & flag_do_shutdown)) {
+    if ((m_flags & flag_did_shutdown))
+      throw torrent::internal_error("Already trigged shutdown.");
+
+    m_flags |= flag_did_shutdown;
+    throw torrent::shutdown_exception();
+  }
+
+  process_callbacks();
+}
+
+std::chrono::microseconds
+ThreadScgi::next_timeout() {
+  // TODO: This leads to kqueue crash?
+  // return std::chrono::microseconds(1h);
+  return std::chrono::microseconds(10min);
+}
+
+} // namespace scgi
+
+namespace scgi_thread {
+
+torrent::utils::Thread* thread()                         { return scgi::ThreadScgiInternal::thread_scgi(); }
+std::thread::id         thread_id()                      { return scgi::ThreadScgiInternal::thread_scgi()->thread_id(); }
+
+void callback(void* target, std::function<void ()>&& fn) { scgi::ThreadScgiInternal::thread_scgi()->callback(target, std::move(fn)); }
+void cancel_callback(void* target)                       { scgi::ThreadScgiInternal::thread_scgi()->cancel_callback(target); }
+void cancel_callback_and_wait(void* target)              { scgi::ThreadScgiInternal::thread_scgi()->cancel_callback_and_wait(target); }
+
+rpc::SCgi*  scgi()                                       { return scgi::ThreadScgiInternal::thread_scgi()->scgi(); }
+void        set_scgi(rpc::SCgi* scgi)                    { scgi::ThreadScgiInternal::thread_scgi()->set_scgi(scgi); }
+void        set_rpc_log(const std::string& filename)     { scgi::ThreadScgiInternal::thread_scgi()->set_rpc_log(filename); }
+
+} // namespace scgi_thread

src/scgi/thread_scgi.h

@@ -1,5 +1,5 @@
-#ifndef RTORRENT_THREAD_WORKER_H
-#define RTORRENT_THREAD_WORKER_H
+#ifndef RTORRENT_SCGI_THREAD_SCGI_H
+#define RTORRENT_SCGI_THREAD_SCGI_H
 
 #include <atomic>
 #include <string>
@@ -9,30 +9,49 @@ namespace rpc {
 class SCgi;
 }
 
-class ThreadWorker : public torrent::utils::Thread {
-public:
-  ThreadWorker() = default;
-  ~ThreadWorker();
+namespace scgi {
 
-  const char*         name() const override      { return "rtorrent scgi"; }
+class ThreadScgiInternal;
+
+class ThreadScgi : public torrent::utils::Thread {
+public:
+
+  static void         create_thread();
+  static void         destroy_thread();
+  static ThreadScgi*  thread_scgi();
+
+  const char*         name() const override      { return "rtorrent-scgi"; }
 
   void                init_thread() override;
   void                cleanup_thread() override;
 
-  rpc::SCgi*          scgi()                     { return m_scgi; }
+  rpc::SCgi*          scgi();
   bool                set_scgi(rpc::SCgi* scgi);
 
   void                set_rpc_log(const std::string& filename);
 
+protected:
+  friend class ThreadScgiInternal;
+
+  ThreadScgi() = default;
+
+  static auto         internal_thread_scgi() { return m_thread_scgi; }
+
+  void                      call_events() override;
+  std::chrono::microseconds next_timeout() override;
+
 private:
   void                task_touch_log();
   void                change_rpc_log();
 
-  void                      call_events() override;
-  std::chrono::microseconds next_timeout() override;
+  static ThreadScgi*  m_thread_scgi;
 
   std::atomic<rpc::SCgi*>   m_scgi{nullptr};
   std::string               m_rpc_log_filename;
+
+  // std::unique_ptr<ScgiManager> m_manager;
 };
 
-#endif // RTORRENT_THREAD_WORKER_H
+} // namespace scgi
+
+#endif // RTORRENT_SCGI_THREAD_SCGI_H

src/session/thread_session.cc

@@ -76,7 +76,7 @@ std::chrono::microseconds
 ThreadSession::next_timeout() {
   // TODO: This leads to kqueue crash?
   // return std::chrono::microseconds(1h);
-  return std::chrono::microseconds(10s);
+  return std::chrono::microseconds(10min);
 }
 
 } // namespace session

src/thread_worker.cc

@@ -1,97 +0,0 @@
-#include "config.h"
-
-#include "thread_worker.h"
-
-#include <fcntl.h>
-#include <unistd.h>
-#include <cassert>
-#include <rak/path.h>
-#include <torrent/exceptions.h>
-
-#include "globals.h"
-#include "control.h"
-#include "core/manager.h"
-#include "rpc/scgi.h"
-#include "rpc/parse_commands.h"
-
-ThreadWorker::~ThreadWorker() = default;
-
-void
-ThreadWorker::init_thread() {
-  m_state = STATE_INITIALIZED;
-}
-
-void
-ThreadWorker::cleanup_thread() {
-  if (m_scgi != nullptr)
-    m_scgi.load()->deactivate();
-}
-
-bool
-ThreadWorker::set_scgi(rpc::SCgi* scgi) {
-  rpc::SCgi* expected = nullptr;
-
-  if (!m_scgi.compare_exchange_strong(expected, scgi))
-    return false;
-
-  change_rpc_log();
-
-  callback(nullptr, [this]() {
-      if (m_scgi == NULL)
-        throw torrent::internal_error("Tried to start SCGI but object was not present.");
-
-      m_scgi.load()->activate();
-    });
-
-  return true;
-}
-
-void
-ThreadWorker::set_rpc_log(const std::string& filename) {
-  callback(nullptr, [this, filename]() {
-      m_rpc_log_filename = filename;
-      change_rpc_log();
-    });
-}
-
-void
-ThreadWorker::change_rpc_log() {
-  if (scgi() == NULL)
-    return;
-
-  if (scgi()->log_fd() != -1) {
-    ::close(scgi()->log_fd());
-    scgi()->set_log_fd(-1);
-    control->core()->push_log("Closed RPC log.");
-  }
-
-  if (m_rpc_log_filename.empty())
-    return;
-
-  scgi()->set_log_fd(open(rak::path_expand(m_rpc_log_filename).c_str(), O_WRONLY | O_APPEND | O_CREAT, 0644));
-
-  if (scgi()->log_fd() == -1) {
-    control->core()->push_log_std("Could not open RPC log file '" + m_rpc_log_filename + "'.");
-    return;
-  }
-
-  control->core()->push_log_std("Logging RPC events to '" + m_rpc_log_filename + "'.");
-}
-
-void
-ThreadWorker::call_events() {
-  if ((m_flags & flag_do_shutdown)) {
-    if ((m_flags & flag_did_shutdown))
-      throw torrent::internal_error("Already trigged shutdown.");
-
-    m_flags |= flag_did_shutdown;
-    throw torrent::shutdown_exception();
-  }
-
-  process_callbacks();
-}
-
-std::chrono::microseconds
-ThreadWorker::next_timeout() {
-  return std::chrono::microseconds(10min);
-}