MINOR: lua: add runtime execution context
The functions added permits to execute the LUA stack execution in
HAProxy. It provides all the runtie environment and initialise the
main LUA stack.
diff --git a/include/types/hlua.h b/include/types/hlua.h
index d1aa235..85d7e81 100644
--- a/include/types/hlua.h
+++ b/include/types/hlua.h
@@ -3,4 +3,31 @@
#include <lua.h>
+enum hlua_state {
+ HLUA_STOP = 0,
+ HLUA_RUN,
+};
+
+enum hlua_exec {
+ HLUA_E_OK = 0,
+ HLUA_E_AGAIN, /* LUA yield, must resume the stack execution later, when
+ the associatedtask is waked. */
+ HLUA_E_ERRMSG, /* LUA stack execution failed with a string error message
+ in the top of stack. */
+ HLUA_E_ERR, /* LUA stack execution failed without error message. */
+};
+
+struct hlua {
+ lua_State *T; /* The LUA stack. */
+ int Tref; /* The reference of the stack in coroutine case.
+ -1 for the main lua stack. */
+ int Mref; /* The reference of the memory context in coroutine case.
+ -1 if the memory context is not used. */
+ int nargs; /* The number of arguments in the stack at the start of execution. */
+ enum hlua_state state; /* The current execution state. */
+ struct task *task; /* The task associated with the lua stack execution.
+ We must wake this task to continue the task execution */
+ struct ebpt_node node;
+};
+
#endif /* _TYPES_HLUA_H */