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39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
#ifndef _IOB_H
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#define _IOB_H
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/* These functions can be used to create a queue of small (or large)
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* buffers and parts of files to be sent out over a socket. It is meant
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* for writing HTTP servers or the like. */
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/* This API works with non-blocking I/O. Simply call iob_send until it
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* returns 0 (or -1). The implementation uses sendfile for zero-copy
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* TCP and it will employ writev (or the built-in sendfile writev on
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* BSD) to make sure the output fragments are coalesced into as few TCP
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* frames as possible. On Linux it will also use the TCP_CORK socket
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* option. */
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#include "io.h"
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#include "array.h"
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typedef struct io_batch {
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array b;
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uint64 bytesleft;
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long next,bufs,files;
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} io_batch;
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io_batch* iob_new(int hint_entries);
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int iob_addbuf(io_batch* b,const void* buf,uint64 n);
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int iob_addbuf_free(io_batch* b,const void* buf,uint64 n);
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int iob_adds(io_batch* b,const char* s);
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int iob_adds_free(io_batch* b,const char* s);
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int iob_addfile(io_batch* b,int64 fd,uint64 off,uint64 n);
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int iob_addfile_close(io_batch* b,int64 fd,uint64 off,uint64 n);
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int64 iob_send(int64 s,io_batch* b);
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int64 iob_write(int64 s,io_batch* b,io_write_callback cb);
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void iob_reset(io_batch* b);
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void iob_free(io_batch* b);
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void iob_prefetch(io_batch* b,uint64 bytes);
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uint64 iob_bytesleft(const io_batch* b);
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#endif
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