Add cancelledby config section

sbysrc/sby.py

@@ -388,6 +388,7 @@ if dump_taskinfo:
             "mode": cfg.options.get("mode"),
             "engines": cfg.engines,
             "script": cfg.script,
+            "cancelledby": cfg.cancelledby,
         }
     print(json.dumps(taskinfo, indent=2))
     sys.exit(0)

sbysrc/sby_core.py

@@ -177,7 +177,7 @@ class SbyProc:
             return
 
         for task in self.task.taskloop.tasks_done:
-            if task.name == "killer":
+            if task.name in self.task.cancelledby:
                 if not self.silent:
                     self.task.log(f"Cancelled by {task.name!r} task")
                 self.task.cancel()
@@ -290,6 +290,7 @@ class SbyConfig:
         self.autotune_config = None
         self.files = dict()
         self.verbatim_files = dict()
+        self.cancelledby = list()
         pass
 
     def parse_config(self, f):
@@ -410,6 +411,12 @@ class SbyConfig:
                     import sby_autotune
                     self.autotune_config = sby_autotune.SbyAutotuneConfig()
                     continue
+                
+                if section == "cancelledby":
+                    mode = "cancelledby"
+                    if args is not None:
+                        self.error(f"sby file syntax error: '[cancelledby]' section does not accept any arguments. got {args}")
+                    continue
 
                 if section == "file":
                     mode = "file"
@@ -444,6 +451,12 @@ class SbyConfig:
             if mode == "autotune":
                 self.autotune_config.config_line(self, line)
                 continue
+            
+            if mode == "cancelledby":
+                taskname = line.strip()
+                if taskname:
+                    self.cancelledby.append(taskname)
+                continue
 
             if mode == "engines":
                 args = line.strip().split()

tests/intertask/killer.sby

@@ -1,6 +1,12 @@
 [tasks]
-killer
-aborted
+c
+b
+a
+
+[cancelledby]
+a: b
+b: c
+c: a
 
 [options]
 mode bmc
@@ -8,12 +14,12 @@ depth 100
 expect fail,cancelled
 
 [engines]
-killer: btor btormc
-aborted: smtbmc boolector
+btor btormc
 
 [script]
-killer: read -define MAX=7
-aborted: read -define MAX=14
+a: read -define MAX=7
+b: read -define MAX=14
+c: read -define MAX=3
 read -formal demo.sv
 prep -top demo