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#ifndef _NGX_OS_H_INCLUDED_
#define _NGX_OS_H_INCLUDED_
#include <ngx_config.h>
#include <ngx_core.h>
#define NGX_IO_SENDFILE 1
#define NGX_IO_ZEROCOPY 2
#if (HAVE_SENDFILE)
#define NGX_HAVE_SENDFILE NGX_IO_SENDFILE
#else
#define NGX_HAVE_SENDFILE 0
#endif
#if (HAVE_ZEROCOPY)
#define NGX_HAVE_ZEROCOPY NGX_IO_ZEROCOPY
#else
#define NGX_HAVE_ZEROCOPY 0
#endif
typedef ssize_t (*ngx_recv_pt)(ngx_connection_t *c, u_char *buf, size_t size);
typedef ssize_t (*ngx_recv_chain_pt)(ngx_connection_t *c, ngx_chain_t *in);
typedef ssize_t (*ngx_send_pt)(ngx_connection_t *c, u_char *buf, size_t size);
typedef ngx_chain_t *(*ngx_send_chain_pt)(ngx_connection_t *c, ngx_chain_t *in,
off_t limit);
typedef struct {
ngx_recv_pt recv;
ngx_recv_chain_pt recv_chain;
ngx_send_pt send;
ngx_send_chain_pt send_chain;
int flags;
} ngx_os_io_t;
int ngx_os_init(ngx_log_t *log);
ssize_t ngx_wsarecv(ngx_connection_t *c, u_char *buf, size_t size);
ssize_t ngx_overlapped_wsarecv(ngx_connection_t *c, u_char *buf, size_t size);
ssize_t ngx_wsarecv_chain(ngx_connection_t *c, ngx_chain_t *chain);
ngx_chain_t *ngx_wsasend_chain(ngx_connection_t *c, ngx_chain_t *in,
off_t limit);
ngx_chain_t *ngx_overlapped_wsasend_chain(ngx_connection_t *c, ngx_chain_t *in,
off_t limit);
extern ngx_os_io_t ngx_os_io;
extern int ngx_ncpu;
extern int ngx_max_sockets;
extern int ngx_inherited_nonblocking;
extern int ngx_win32_version;
#endif /* _NGX_OS_H_INCLUDED_ */
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