Add "testfork" test command. Not used in any test-case yet

1 files changed, 50 insertions, 0 deletions

diff --git a/unix/tclUnixTest.c b/unix/tclUnixTest.c
index b6529c2..2fc1647 100644
--- a/unix/tclUnixTest.c
+++ b/unix/tclUnixTest.c
@@ -66,6 +66,8 @@ static int		TestfilewaitCmd(ClientData dummy,
 			    Tcl_Interp *interp, int argc, CONST char **argv);
 static int		TestfindexecutableCmd(ClientData dummy,
 			    Tcl_Interp *interp, int argc, CONST char **argv);
+static int		TestforkObjCmd(ClientData dummy,
+			    Tcl_Interp *interp, int objc, Tcl_Obj *CONST *argv);
 static int		TestgetopenfileCmd(ClientData dummy,
 			    Tcl_Interp *interp, int argc, CONST char **argv);
 static int		TestgetdefencdirCmd(ClientData dummy,
@@ -110,6 +112,8 @@ TclplatformtestInit(
             (ClientData) 0, NULL);
     Tcl_CreateCommand(interp, "testfindexecutable", TestfindexecutableCmd,
             (ClientData) 0, NULL);
+    Tcl_CreateObjCommand(interp, "testfork", TestforkObjCmd,
+            (ClientData) 0, NULL);
     Tcl_CreateCommand(interp, "testgetopenfile", TestgetopenfileCmd,
             (ClientData) 0, NULL);
     Tcl_CreateCommand(interp, "testgetdefenc", TestgetdefencdirCmd,
@@ -533,6 +537,52 @@ TestsetdefencdirCmd(
     Tcl_SetDefaultEncodingDir(argv[1]);
     return TCL_OK;
 }
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TestforkObjCmd --
+ *
+ *	This function implements the "testfork" command. It is used to
+ *	fork the Tcl process for specific test cases.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TestforkObjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *CONST *objv)		/* Argument strings. */
+{
+    pid_t pid;
+
+    if (objc != 1) {
+        Tcl_WrongNumArgs(interp, 1, objv, "");
+        return TCL_ERROR;
+    }
+    pid = fork();
+    if (pid == -1) {
+        Tcl_AppendResult(interp,
+                "Cannot fork", NULL);
+        return TCL_ERROR;
+    }
+#ifndef HAVE_PTHREAD_ATFORK
+    /* Only needed when pthread_atfork is not present. */
+    if (pid==0) {
+	Tcl_InitNotifier();
+    }
+#endif
+    Tcl_SetObjResult(interp, Tcl_NewIntObj(pid));
+    return TCL_OK;
+}
 
 /*
  *----------------------------------------------------------------------