1 files changed, 47 insertions, 0 deletions
diff --git a/bdb/os/os_id.c b/bdb/os/os_id.c
new file mode 100644
index 00000000000..c242bb12e23
--- /dev/null
+++ b/bdb/os/os_id.c
@@ -0,0 +1,47 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 2001-2002
+ *	Sleepycat Software.  All rights reserved.
+ */
+
+#include "db_config.h"
+
+#ifndef lint
+static const char revid[] = "$Id: os_id.c,v 1.2 2002/01/11 15:52:59 bostic Exp $";
+#endif /* not lint */
+
+#ifndef NO_SYSTEM_INCLUDES
+#include <sys/types.h>
+
+#include <unistd.h>
+#endif
+
+#include "db_int.h"
+
+/*
+ * __os_id --
+ *	Return a 32-bit value identifying the current thread of control.
+ *
+ * PUBLIC: void __os_id __P((u_int32_t *));
+ */
+void
+__os_id(idp)
+	u_int32_t *idp;
+{
+	/*
+	 * By default, use the process ID.
+	 *
+	 * getpid() returns a pid_t which we convert to a u_int32_t.  I have
+	 * not yet seen a system where a pid_t has 64-bits, but I'm sure they
+	 * exist.  Since we're returning only the bottom 32-bits, you cannot
+	 * use the return of __os_id to reference a process (for example, you
+	 * cannot send a signal to the value returned by __os_id).  To send a
+	 * signal to the current process, use raise(3) instead.
+	 */
+#ifdef	HAVE_VXWORKS
+	*idp = taskIdSelf();
+#else
+	*idp = getpid();
+#endif
+}