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.TH "COMEDI_DO_INSNLIST" "3" "02 October 2004" "" ""
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comedi_do_insnlist \- perform multiple instructions
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\fB#include <comedilib.h>
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int comedi_do_insnlist (comedi_t * \fIdevice\fB, comedi_insnlist * \fIlist\fB);
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The function comedi_do_insnlist() performs multiple Comedi
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instructions as part of one system call. In addition, Comedi
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attempts to perform the instructions atomically, that is, on
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standard Linux kernels, no process preemption should occur
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during the instructions. However, the process may be preempted
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before or after the group of instructions.
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This function can be used to avoid the overhead of multiple
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system calls, or to ensure that multiple instructions occur
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without significant delay between them.
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Preemption may occur if any of the instructions or the data
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arrays of any of the instructions exist in non-resident or
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The function comedi_do_insnlist() returns the number of
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sucessfully completed instructions. Error information for
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the unsucessful instruction is not available. If there is
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an error before the first instruction can be executed, -1
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doc/man/comedi_do_insnlist.3
