Add global toolchain locking to agent

This is the ground work for the task priority/interrupt support.

1 files changed, 10 insertions, 0 deletions

diff --git a/bbot/agent/agent.cli b/bbot/agent/agent.cli
index 22dc088..aa7eb59 100644
--- a/bbot/agent/agent.cli
+++ b/bbot/agent/agent.cli
@@ -65,6 +65,16 @@ namespace bbot
        interfaces, etc."
     }
 
+    string --toolchain-lock // Note: string to allow empty path.
+    {
+      "<path>",
+      "Absolute path to the global toolchain lock file. If unspecified, then
+       \c{\b{/var/lock/bbot-agent-}\i{toolchain-name}\b{.lock}} is used by
+       default. If empty path is specified then no global locking is
+       performed. If one of the \cb{--fake-*} options is specified, then no
+       locking is performed by default."
+    }
+
     standard_version --toolchain-ver
     {
       "<stdver>",