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-rw-r--r--innobase/include/com0shm.h103
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diff --git a/innobase/include/com0shm.h b/innobase/include/com0shm.h
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--- a/innobase/include/com0shm.h
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-/******************************************************
-The communication through shared memory
-
-(c) 1995 Innobase Oy
-
-Created 9/23/1995 Heikki Tuuri
-*******************************************************/
-
-#ifndef com0shm_h
-#define com0shm_h
-
-#include "univ.i"
-
-typedef struct com_shm_endpoint_struct com_shm_endpoint_t;
-
-/* The performance of communication in NT depends on how
-many times a system call is made (excluding os_thread_yield,
-as that is the fastest way to switch thread).
-The following variable counts such events. */
-
-extern ulint com_shm_system_call_count;
-
-
-/*************************************************************************
-Creates a communications endpoint. */
-
-com_shm_endpoint_t*
-com_shm_endpoint_create(void);
-/*=========================*/
- /* out, own: communications endpoint, NULL if
- did not succeed */
-/*************************************************************************
-Frees a communications endpoint. */
-
-ulint
-com_shm_endpoint_free(
-/*==================*/
- /* out: O if succeed, else error number */
- com_shm_endpoint_t* ep);/* in, own: communications endpoint */
-/*************************************************************************
-Sets an option, like the maximum datagram size for an endpoint.
-The options may vary depending on the endpoint type. */
-
-ulint
-com_shm_endpoint_set_option(
-/*========================*/
- /* out: 0 if succeed, else error number */
- com_shm_endpoint_t* ep, /* in: endpoint */
- ulint optno, /* in: option number, only
- COM_OPT_MAX_DGRAM_SIZE currently supported */
- byte* optval, /* in: pointer to a buffer containing the
- option value to set */
- ulint optlen);/* in: option value buffer length */
-/*************************************************************************
-Bind a communications endpoint to a specified address. */
-
-ulint
-com_shm_bind(
-/*=========*/
- /* out: 0 if succeed, else error number */
- com_shm_endpoint_t* ep, /* in: communications endpoint */
- char* name, /* in: address name */
- ulint len); /* in: address name length */
-/*************************************************************************
-Waits for a datagram to arrive at an endpoint. */
-
-ulint
-com_shm_recvfrom(
-/*=============*/
- /* out: 0 if succeed, else error number */
- com_shm_endpoint_t* ep, /* in: communications endpoint */
- byte* buf, /* out: datagram buffer; the buffer is
- supplied by the caller */
- ulint buf_len,/* in: datagram buffer length */
- ulint* len, /* out: datagram length */
- char* from, /* out: address name buffer; the buffer is
- supplied by the caller */
- ulint from_len,/* in: address name buffer length */
- ulint* addr_len);/* out: address name length */
-/*************************************************************************
-Sends a datagram to the specified destination. */
-
-ulint
-com_shm_sendto(
-/*===========*/
- /* out: 0 if succeed, else error number */
- com_shm_endpoint_t* ep, /* in: communications endpoint */
- byte* buf, /* in: datagram buffer */
- ulint len, /* in: datagram length */
- char* to, /* in: address name buffer */
- ulint tolen); /* in: address name length */
-
-ulint
-com_shm_endpoint_get_size(
-/*======================*/
- com_shm_endpoint_t* ep);
-
-
-#ifndef UNIV_NONINL
-#include "com0shm.ic"
-#endif
-
-#endif