Low-Level threads(pthreads or WIN32 threads) for Lua.
C Lua CMake
Failed to load latest commit information.
cmake
examples Updated example from Ross Anderson. Nov 25, 2011
rockspecs Switch to using zipped downloads instead of git. Jun 27, 2013
src Add support for Lua 5.2 Oct 16, 2012
tests
.gitignore
.travis.yml Remove BOM from .travis.yml to fix travis-ci build. Jan 23, 2016
CMakeLists.txt Update cmake build scripts. Oct 15, 2012
COPYRIGHT Add COPYRIGHT file. Nov 22, 2011
README.md Enable Travis CI. May 15, 2013
llthreads.nobj.lua Initial release of llthreads. Mar 24, 2011

README.md

About

travis-ci status

A simple Lua wrapper for pthreads & WIN32 threads.

Each thread gets it's own lua_State and there is no shared global state. The parent thread can pass data to a child thread only as parameters when creating the child thread. The child threads can return data back to the parent thread only when it return (i.e. ends). The parent needs to call child:join() to get the return values from a child thread, this call will block until the child thread ends.

The design goals of this module is only provide support for creating new lua_State and running them in a different thread. This module will not provide any methods of thread-to-thread data passing between running threads (i.e. no locks, no shared state).

Thread to Thread communication methods

  • The recommend method of passing data between threads is to use ZeroMQ.

  • Another method is to use sockets library like LuaSocket or Nixio.

Installation

Release 1.2

lua-llthread 1.2 release:

$ sudo luarocks install lua-llthreads

Lastest Git Revision

With LuaRocks 2.0.4.1:

$ sudo luarocks install https://github.com/Neopallium/lua-llthreads/raw/master/rockspecs/lua-llthreads-scm-0.rockspec

With CMake:

$ git clone git://github.com/Neopallium/lua-llthreads.git
$ cd lua-llthreads ; mkdir build ; cd build
$ cmake ..
$ make
$ sudo make install

Example usage

local llthreads = require"llthreads"

local thread_code = [[
    -- print thread's parameter.
    print("CHILD: received params:", ...)
    -- return all thread's parameters back to the parent thread.
    return ...
]]

-- create detached child thread.
local thread = llthreads.new(thread_code, "number:", 1234, "nil:", nil, "bool:", true)
-- start non-joinable detached child thread.
assert(thread:start(true))
-- Use a detatched child thread when you don't care when the child finishes.

-- create child thread.
local thread = llthreads.new(thread_code, "number:", 1234, "nil:", nil, "bool:", true)
-- start joinable child thread.
assert(thread:start())
-- Warning: If you don't call thread:join() on a joinable child thread, it will be called
-- by the garbage collector, which may cause random pauses/freeze of the parent thread.
print("PARENT: child returned: ", thread:join())

local socket = require"socket"
socket.sleep(2) -- give detached thread some time to run.