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Or, the another possibility is recording everything that needs to be cleaned up. That introduces more state data that has to be initialized, maintained in a coherent state and cleaned up.
Now suppose that you have to change the order of setup because of a newly discovered hardware restriction. You potentially have to re-order the labels for your gotos, or which cleanup gets done after each label.
If the cleanup is done at the bottom of every block that is executed because of success, it is automatically done in the proper time and place.
So, bailing out leaves dangling threads, leaking memory, and deadlocks that show up the next time the function is entered.
It's the easy way out only once.
The key fact is that
Had to boot the install media to get out of that mess.
The Wikipedia article is labeled Power to Gas http://en.wikipedia.org/wiki/P... There's a section for hydrogen and another section for methane. And of course, once you have methane and CO, you have feedstock for Fischer-Tropsch processes that provide liquid fuels.
In the 1800s even under the copper plating, the seams were caulked with oakum soaked in pine tar, driven in place with a caulking mallet and a caulking iron, putty was then applied to the hull seams and the deck seams were payed with melted pine pitch. The weather deck of the ship had to be as water-tight as the hull or waves breaking over the deck would founder the ship in short order. That's another thing that the typical Ark description gets wrong.
The pictures I've seen of the interior of modern Ark replicas look more like barn framing than ship framing. Wooden cargo ship frames from the 1800s were large. For example, the Flying Cloud had floor timbers (think ribs) that were sided(along the length of the ship) 12 inches, moulded (outside to inside) 17 inches at the keel (typically white oak or live oak), space between the frames was typically the same as the sided dimension (12 inches in this case). The keel of the Flying Cloud was 3 layers of rock maple, moulded 44 inches, and sided 16 inches, with additional keelsons and sister keelsons, the ship was nearly 9 feet through the backbone. And, it was all bolted through and through with 1 1/4 inch copper and iron bolts. Even the garboard strakes (outside hull planks) were from 4 1/2 inches to 7 inches thick, The ceiling (inside hull planks) was a minimum of 4 1/2 inches up to 7 inches thick. Most of the planking and ceiling were southern pine.
If you can't keep the hull from flexing, every time a section of the hull passes over a wave the frames and strakes will bend, the seams will open, and the sea will come in. Then, unless you have high volume bilge pumps running constantly, down the ship goes.
It the GPU exports an MP4 video stream that can be delivered directly to any display (local or remote) that deals with the last connection bottleneck. It's a standard, its ubiquitous, and its implemented in hardware. The return channel for user interaction needs to be done, but that doesn't have the performance issues that the presentation does.
The other piece of the system that needs to be handled is the API for the interface to the GPU hardware. A contender for that seems to be an API tied to EGL ES (if I read the acronyms right), and there should be others. That assumes the Khronos Group is doing something useful there. How many implementations are there of EGL ES to GPU hardware drivers?
The layer in the system between the user applications and the hardware interface is the place where QT, GTK, Windows graphics api, and all the other graphics toolkits go. Those toolkits shouldn't care too much about the hardware details, just the published capabilities of the GPUs.
Just some thoughts
The remote presentation could all be done with an mpeg 4 stream, direct from the GPU. That chooses one standardized mechanism for presentation, and I think it should be sufficient for almost any sort of application. The presentation space in the GPU would be written with a number of APIs, but as the time came to present that image to the user, the GPU would transform the presentation space into an appropriate mpeg 4 frame and push it out some serialization interface for delivery to the end device.
The only additional interface required is for the user input device, which is non-trivial, but doesn't require the brute processing capacity that presentation requires.
Speculation, I know.
To restate. Critical being the heating boiler (LP), some lights, the kitchen (except the electric oven), a sump pump, and a circuit for the living room and master bedroom. I grew up without running water and with wood stove heat. The current setup is way better than that. And it does last for days without starting up the generator.
The batteries are Fullriver DC310-6 gel-packs which are supposed to deal with hydrogen out-gassing. I think the model number translates to 6 volt, 310 Amp hours. They're connected in series to yield 48 volts DC to the inverter.
The system was sized to run the critical circuits in the house for 3 days. (Critical being the heating boiler (LP), some lights, the kitchen (except the electric oven), a sump pump, and a circuit for the living room and master bedroom.