diff options
Diffstat (limited to 'libs/lucid/luasrc/lucid.lua')
| -rw-r--r-- | libs/lucid/luasrc/lucid.lua | 35 |
1 files changed, 23 insertions, 12 deletions
diff --git a/libs/lucid/luasrc/lucid.lua b/libs/lucid/luasrc/lucid.lua index 4963ccc30..96611d244 100644 --- a/libs/lucid/luasrc/lucid.lua +++ b/libs/lucid/luasrc/lucid.lua @@ -110,22 +110,25 @@ end -- This main function of LuCId will wait for events on given file descriptors. function run() local pollint = tonumber((cursor:get(UCINAME, "main", "pollinterval"))) - local threadlimit = tonumber(cursor:get(UCINAME, "main", "threadlimit")) + local threadlimit = tonumber((cursor:get(UCINAME, "main", "threadlimit"))) while true do - if not threadlimit or tcount < threadlimit then - local stat, code = nixio.poll(pollt, pollint) + local stat, code = nixio.poll(pollt, pollint) - if stat and stat > 0 then - for _, polle in ipairs(pollt) do - if polle.revents ~= 0 and polle.handler then - polle.handler(polle) - end + if stat and stat > 0 then + local ok = false + for _, polle in ipairs(pollt) do + if polle.revents ~= 0 and polle.handler then + ok = ok or polle.handler(polle) end - elseif stat == 0 then - ifaddrs = nixio.getifaddrs() - collectgarbage("collect") end + if not ok then + -- Avoid high CPU usage if thread limit is reached + nixio.nanosleep(0, 100000000) + end + elseif stat == 0 then + ifaddrs = nixio.getifaddrs() + collectgarbage("collect") end for _, cb in ipairs(tickt) do @@ -200,6 +203,14 @@ function unregister_tick(cb) return false end +--- Tests whether a given number of processes can be created. +-- @oaram num Processes to be created +-- @return boolean status +function try_process(num) + local threadlimit = tonumber((cursor:get(UCINAME, "main", "threadlimit"))) + return not threadlimit or (threadlimit - tcount) >= (num or 1) +end + --- Create a new child process from a Lua function and assign a destructor. -- @param threadcb main function of the new process -- @param waitcb destructor callback @@ -320,4 +331,4 @@ function daemonize() nixio.dup(devnull, nixio.stderr) return true -end +end
\ No newline at end of file |