diff options
| -rw-r--r-- | src/core/monojob.c | 28 |
1 files changed, 15 insertions, 13 deletions
diff --git a/src/core/monojob.c b/src/core/monojob.c index 817f21b..d426235 100644 --- a/src/core/monojob.c +++ b/src/core/monojob.c @@ -64,7 +64,7 @@ struct interface monojob = INTF_INIT ( monojob_intf_desc ); */ int monojob_wait ( const char *string, unsigned long timeout ) { struct job_progress progress; - unsigned long last_keycheck; + unsigned long last_check; unsigned long last_progress; unsigned long last_display; unsigned long now; @@ -81,26 +81,28 @@ int monojob_wait ( const char *string, unsigned long timeout ) { if ( string ) printf ( "%s...", string ); monojob_rc = -EINPROGRESS; - last_keycheck = last_progress = last_display = currticks(); + last_check = last_progress = last_display = currticks(); while ( monojob_rc == -EINPROGRESS ) { /* Allow job to progress */ step(); now = currticks(); - /* Check for keypresses. This can be time-consuming, - * so check only once per clock tick. + /* Continue until a timer tick occurs (to minimise + * time wasted checking for progress and keypresses). */ - elapsed = ( now - last_keycheck ); - if ( elapsed ) { - if ( iskey() ) { - key = getchar(); - if ( key == CTRL_C ) { - monojob_rc = -ECANCELED; - break; - } + elapsed = ( now - last_check ); + if ( ! elapsed ) + continue; + last_check = now; + + /* Check for keypresses */ + if ( iskey() ) { + key = getchar(); + if ( key == CTRL_C ) { + monojob_rc = -ECANCELED; + break; } - last_keycheck = now; } /* Monitor progress */ |