mrw wrote: > This may be some kind of answer if unsigned 64 bit integers are > available, and don't kill performance: Perhap changing the lua default integer type to 64bit by changing LUA_NUMBER_MODE to 22 making the lua integer type a long long. https://github.com/Logitech/squeezeplay/blob/public/7.8/src/lua-5.1.1/src/luaconf.h#L24 Need to confirm the LUAI_BITSINT definitions as well. I confirmed that a long long is 8 bytes on the radio. This could have a negative impact on available memory in the radio.
mrw wrote: > Redefine -jive_jiffies- to be -Uint64- instead of -Uint32-. > https://github.com/Logitech/squeezeplay/blob/7.8/src/squeezeplay_baby/src/common.h#L65 > Systems that use -SDL_GetTicks()- won't get much benefit, because that's > only 32 bit unsigned milliseconds anyway. But systems that use > -clock_gettime- could gain. > > Fix up -jiveL_get_ticks- to push appropriate unsigned value. > https://github.com/Logitech/squeezeplay/blob/public/7.8/src/squeezeplay/src/ui/jive_framework.c#L967 > The lua number type in use on SqueezePlay is, I believe, a double float, > with 53 bits ? of integer precision, not 64, but that might be ok. It > ought to give us about 300,000 years instead of 24 days. It is a compile > time option.[/url] SDL_GetTicks is called directly only in jiveblit.c which is easy to fix but jive_jiffies is used a lot and in many cases expected to be only 32bits. I would think using a double to have a bigger performance impact on the radio than a 64bit int since it uses emulated floating point. Need to try it to be sure. If changing LUA_NUMBER_MODE doesn't work. I'll have a stab at trying these changes on a 32bit intel linux system to see how far I can get. Ralphy *1*-Touch, *5*-Classics, *3*-Booms, *1*-UE Radio 'Squeezebox client builds' (https://sourceforge.net/projects/lmsclients/files/) 'donations' (https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=LL5P6365KQEXN&lc=CA&item_name=Squeezebox%20client%20builds¤cy_code=USD&bn=PP%2dDonationsBF%3abtn_donate_SM%2egif%3aNonHosted) always appreciated. ------------------------------------------------------------------------ ralphy's Profile: http://forums.slimdevices.com/member.php?userid=3484 View this thread: http://forums.slimdevices.com/showthread.php?t=111663 _______________________________________________ Radio mailing list Radio@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/radio
