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#ifndef IO_H |
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#define IO_H |
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/* http://cr.yp.to/lib/io.html */ |
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#include "uint64.h" |
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#include "tai.h" |
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/* like open(s,O_RDONLY) */ |
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int io_readfile(int64* d,const char* s); |
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/* like open(s,O_WRONLY|O_TRUNC,0600) */ |
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int io_createfile(int64* d,const char* s); |
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/* like pipe(d) */ |
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int io_pipe(int64* d); |
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/* non-blocking read(), -1 for EAGAIN and -3+errno for other errors */ |
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int64 io_tryread(int64 d,char* buf,int64 len); |
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/* blocking read(), with -3 instead of -1 for errors */ |
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int64 io_waitread(int64 d,char* buf,int64 len); |
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/* non-blocking write(), -1 for EAGAIN and -3+errno for other errors */ |
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int64 io_trywrite(int64 d,const char* buf,int64 len); |
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/* blocking write(), with -3 instead of -1 for errors */ |
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int64 io_waitwrite(int64 d,const char* buf,int64 len); |
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/* modify timeout attribute of file descriptor */ |
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void io_timeout(int64 d,struct taia t); |
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/* like io_tryread but will return -2,errno=ETIMEDOUT if d has a timeout |
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* associated and it is passed without input being there */ |
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int64 io_tryreadtimeout(int64 d,char* buf,int64 len); |
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/* like io_trywrite but will return -2,errno=ETIMEDOUT if d has a timeout |
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* associated and it is passed without being able to write */ |
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int64 io_trywritetimeout(int64 d,const char* buf,int64 len); |
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void io_wantread(int64 d); |
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void io_wantwrite(int64 d); |
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void io_dontwantread(int64 d); |
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void io_dontwantwrite(int64 d); |
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void io_wait(); |
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void io_waituntil(struct taia t); |
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void io_check(); |
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/* return next descriptor from io_wait that can be read from */ |
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int64 io_canread(); |
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/* return next descriptor from io_wait that can be written to */ |
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int64 io_canwrite(); |
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/* put d on internal data structure, return 1 on success, 0 on error */ |
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int io_fd(int64 d); |
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/* put descriptor in non-blocking mode */ |
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void io_nonblock(int64 d); |
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/* put descriptor in close-on-exec mode */ |
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void io_closeonexec(int64 d); |
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#endif |