-local _M = { }
-
-_M.source , _M.resolution , _M.gettime = (function()
- local has_syscall , syscall = pcall ( require , "syscall" )
- if has_syscall then
- if syscall.clock_gettime then
- local clock_id = syscall.c.CLOCK.REALTIME
- local function timespec_to_number ( timespec )
- return tonumber ( timespec.tv_sec ) + tonumber ( timespec.tv_nsec ) * 1e-9
- end
- return "syscall.clock_gettime(CLOCK_REALTIME)" ,
- syscall.clock_getres and timespec_to_number ( syscall.clock_getres ( clock_id ) ) or 1e-9 ,
- function ( )
- return timespec_to_number ( syscall.clock_gettime ( clock_id ) )
- end
-
- elseif syscall.gettimeofday then
- local function timeval_to_number ( timeval )
- return tonumber ( timeval.tv_sec ) + tonumber ( timeval.tv_nsec ) * 1e-6
+local _M = {}
+
+_M.source, _M.resolution, _M.gettime = (function()
+ local has_syscall, syscall = pcall(require, "syscall")
+ if has_syscall and syscall.clock_gettime and syscall.c.CLOCK then
+ local clock_id = syscall.c.CLOCK.REALTIME
+ local function timespec_to_number(timespec)
+ return tonumber(timespec.tv_sec) + tonumber(timespec.tv_nsec) * 1e-9
+ end
+ return "syscall.clock_gettime(CLOCK_REALTIME)",
+ syscall.clock_getres and timespec_to_number(syscall.clock_getres(clock_id)) or 1e-9,
+ function()
+ return timespec_to_number(syscall.clock_gettime(clock_id))
end
- return "syscall.gettimeofday()" , 1e-6 ,
- function ( )
- return timeval_to_number ( syscall.gettimeofday ( ) )
- end
+ end
+
+ local has_unix, unix = pcall(require, "unix")
+ -- On Apple devices lunix only uses gettimeofday()
+ if has_unix and unix.clock_gettime and unix.uname and unix.uname().sysname ~= "Darwin" then
+ return "unix.clock_gettime(CLOCK_REALTIME)", 1e-9, function()
+ return unix.clock_gettime()
end
end
- local has_socket , socket = pcall ( require , "socket" )
+ if has_syscall and syscall.gettimeofday then
+ local function timeval_to_number(timeval)
+ return tonumber(timeval.tv_sec) + tonumber(timeval.tv_nsec) * 1e-6
+ end
+ return "syscall.gettimeofday()", 1e-6,
+ function()
+ return timeval_to_number(syscall.gettimeofday())
+ end
+ end
+
+ if has_unix and unix.gettimeofday then
+ return "unix.gettimeofday()", 1e-6, unix.gettimeofday
+ end
+
+ local has_socket, socket = pcall(require, "socket")
if has_socket and socket.gettime then
-- on windows, this uses GetSystemTimeAsFileTime, which has resolution of 1e-7
-- on linux, this uses gettimeofday, which has resolution of 1e-6
- return "socket.gettime()" , 1e-6 , socket.gettime
+ return "socket.gettime()", 1e-6, socket.gettime
end
if ngx and ngx.now then -- luacheck: ignore 113
- return "ngx.now()" , 1e-3 , ngx.now -- luacheck: ignore 113
+ return "ngx.now()", 1e-3, ngx.now -- luacheck: ignore 113
end
- return "os.time()" , 1 , os.time
+ return "os.time()", 1, os.time
end)()
return _M