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headless: Use direct x-thread wakeup instead of sleep/spin

This commit is contained in:
Robin Gareus 2019-07-04 22:02:52 +02:00
parent 9cfcb0bd92
commit bd8897686a
Signed by: rgareus
GPG Key ID: A090BCE02CF57F04
1 changed files with 24 additions and 14 deletions
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38
headless/load_session.cc
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@ -2,9 +2,14 @@
#include <cstdlib>
#include <getopt.h>
#ifndef PLATFORM_WINDOWS
#include <signal.h>
#endif
#include <glibmm.h>
#include "pbd/convert.h"
#include "pbd/crossthread.h"
#include "pbd/failed_constructor.h"
#include "pbd/error.h"
#include "pbd/debug.h"
@ -22,18 +27,12 @@ using namespace std;
using namespace ARDOUR;
using namespace PBD;
#ifdef PLATFORM_WINDOWS
#include <windows.h>
#define sleep(X) Sleep((X) * 1000)
#endif
static const char* localedir = LOCALEDIR;
static string backend_client_name;
static string backend_name = "JACK";
static volatile bool run_headless = true;
TestReceiver test_receiver;
static CrossThreadChannel xthread (true);
static TestReceiver test_receiver;
/** @param dir Session directory.
* @param state Session state file, without .ardour suffix.
@ -69,23 +68,30 @@ static void
access_action (const std::string& action_group, const std::string& action_item)
{
if (action_group == "Common" && action_item == "Quit") {
run_headless = false;
xthread.deliver ('x');
}
}
static void
engine_halted (const char* reason)
{
cerr << "The audio backend has either been shutdown";
cerr << "The audio backend has been shutdown";
if (reason && strlen (reason) > 0) {
cerr << ": " << reason;
} else {
cerr << ".";
}
cerr << endl;
run_headless = false;
xthread.deliver ('x');
}
#ifndef PLATFORM_WINDOWS
static void wearedone (int) {
cerr << "caught signal - terminating." << endl;
xthread.deliver ('x');
}
#endif
static void
print_version ()
{
@ -237,11 +243,15 @@ int main (int argc, char* argv[])
BasicUI::AccessAction.connect_same_thread (con, boost::bind (&access_action, _1, _2));
AudioEngine::instance()->Halted.connect_same_thread (con, boost::bind (&engine_halted, _1));
#ifndef PLATFORM_WINDOWS
signal(SIGINT, wearedone);
signal(SIGTERM, wearedone);
#endif
s->request_transport_speed (1.0);
while (run_headless) {
Glib::usleep (500000);
}
char msg;
do {} while (0 == xthread.receive (msg, true));
AudioEngine::instance()->remove_session ();
delete s;