Reload the current page on SIGUSR1 signal

Reloads the current page on all windows when the SIGUSR1 is received.
This is useful to update the page when it is being edited.

Fixes: https://github.com/dillo-browser/dillo/issues/255

1 files changed, 22 insertions, 1 deletions

diff --git a/src/dillo.cc b/src/dillo.cc
index e9fbfdd7..e49dc1a3 100644
--- a/src/dillo.cc
+++ b/src/dillo.cc
@@ -2,6 +2,7 @@
  * Dillo web browser
  *
  * Copyright 1999-2007 Jorge Arellano Cid <jcid@dillo.org>
+ * Copyright 2024 Rodrigo Arias Mallo <rodarima@gmail.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -65,6 +66,8 @@
 #include "dw/textblock.hh"
 #include "dw/table.hh"
 
+static volatile sig_atomic_t sig_reload = 0;
+
 /**
  * Command line options structure
  */
@@ -145,6 +148,11 @@ static void raw_sigchld2(int signum)
    }
 }
 
+static void handler_usr1(int signum)
+{
+   sig_reload = 1;
+}
+
 /**
  * Establish SIGCHLD handler
  */
@@ -161,6 +169,11 @@ static void est_sigchld(void)
       perror("sigaction");
       exit(1);
    }
+
+   if (signal(SIGUSR1, handler_usr1) == SIG_ERR) {
+      perror("signal failed");
+      exit(1);
+   }
 }
 
 //----------------------------------------------------------------------------
@@ -580,7 +593,15 @@ int main(int argc, char **argv)
       }
    }
 
-   Fl::run();
+   /* Don't use, as it can be free()'d */
+   bw = NULL;
+
+   while (Fl::wait() > 0) {
+      if (sig_reload) {
+         sig_reload = 0;
+         a_UIcmd_reload_all_active();
+      }
+   }
 
    /*
     * Memory deallocating routines