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This is a technical support forum for Maze customers, and for everybody who is interested in Maze. This is the place to ask a question about Maze, report a bug, suggest a new feature, or share your Maze user experience.

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TOPIC: Supported system calls

Supported system calls 6 years, 12 months ago #1

hfinucane OFFLINE Posts: 2	I tried to run an application of mine under maze, but it complained that 'poll' was unsupported. I could, with a bit of work, use select() for testing only- but before I get too invested, I figured I would ask if you maintained a list of unsupported system calls.
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Re: Supported system calls 6 years, 12 months ago #2

roni
OFFLINE
Posts: 16

Hi hfinucane,

Thanks a lot for reporting the problem. Indeed there are several unsupported system calls, but we can implement the support, no problem. As of today the unsupported calls are:

SYS_poll
SYS_epoll_wait
SYS_ppoll
SYS_epoll_pwait
SYS_epoll_wait_old
SYS_mq_timedsend
SYS_mq_timedreceive
SYS_rt_sigtimedwait
SYS_vfork
SYS_execve

Do you need support for the entire "poll" family, or you could name a specific call(s)?

Last Edit: 6 years, 12 months ago by roni.

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Re: Supported system calls 6 years, 12 months ago #3

hfinucane OFFLINE Posts: 2	We use: epoll_create epoll_ctl epoll_wait poll Although I'm not actually sure where the poll comes from, and all it seems to do is read a couple bytes from /dev/urandom.
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Re: Supported system calls 6 years, 12 months ago #4

roni OFFLINE Posts: 16	Thank you for the info and for the prompt response! I'll look into this right away, and then will give you an estimate of how long it will take us to implement.
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Re: Supported system calls 6 years, 12 months ago #5

roni OFFLINE Posts: 16	The support for poll can be added by Monday. epoll_create and epoll_ctl are fine; so is non-blocking epoll_wait (i.e. with timeout=0). How soon you will need epoll_wait? It might take a bit longer. What kind of file descriptors do yo use with epoll - pipes, sockets? Do you use the EPOLLET (edge-triggered) flag when calling epoll_ctl?
	Last Edit: 6 years, 12 months ago by roni. Reply Quote

Re: Supported system calls 6 years, 12 months ago #6

roni OFFLINE Posts: 16	I implemented support for poll system call; also for non-blocking epoll_wait. The new release 1.0-beta-2011.10.20 is ready for download. If you try to run the test case again and let us know the result, it will be of great help. Thank you in advance!
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