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5 Cards in this Set
- Front
- Back
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Why might we want to reduce number of system calls used?
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Simplifies design and reduces error. Also may be restricted in 'sandbox' execution. Switching context from process to kernel is expensive.
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How can we reduce 'expense' of system calls?
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Parameters are first checked within the library.
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Describe the way system calls report errors.
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Unsuccessful system calls return non-zero integer associated with error info.
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Where are system call error returns defined?
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errno.h
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What function can we use to provde consistent error reporting?
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perror()
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