Methods
Public Instance methods
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# File lib/phusion_passenger/utils.rb, line 1001 1001: def close_on_exec! 1002: end
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# File lib/phusion_passenger/utils.rb, line 997 997: def close_on_exec! 998: fcntl(Fcntl::F_SETFD, Fcntl::FD_CLOEXEC) 999: end
Writes all of the strings in the components array into the given file descriptor using the +writev()+ system call. Unlike IO#write, this method does not require one to concatenate all those strings into a single buffer in order to send the data in a single system call. Thus, #writev is a great way to perform zero-copy I/O.
Unlike the raw writev() system call, this method ensures that all given data is written before returning, by performing multiple writev() calls and whatever else is necessary.
io.writev(["hello ", "world", "\n"])
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# File lib/phusion_passenger/utils.rb, line 973 973: def writev(components) 974: return PhusionPassenger::NativeSupport.writev(fileno, components) 975: end
Like #writev, but accepts two arrays. The data is written in the given order.
io.writev2(["hello ", "world", "\n"], ["another ", "message\n"])
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# File lib/phusion_passenger/utils.rb, line 980 980: def writev2(components, components2) 981: return PhusionPassenger::NativeSupport.writev2(fileno, 982: components, components2) 983: end
Like #writev, but accepts three arrays. The data is written in the given order.
io.writev3(["hello ", "world", "\n"], ["another ", "message\n"], ["yet ", "another ", "one", "\n"])
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# File lib/phusion_passenger/utils.rb, line 990 990: def writev3(components, components2, components3) 991: return PhusionPassenger::NativeSupport.writev3(fileno, 992: components, components2, components3) 993: end