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/****************************************************************
* *
* Copyright (c) 2001-2018 Fidelity National Information *
* Services, Inc. and/or its subsidiaries. All rights reserved. *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#ifndef WCS_GET_SPACE_H_INCLUDED
#define WCS_GET_SPACE_H_INCLUDED
#ifdef UNIX
typedef struct wcs_conflict_trace_struct
{
int4 wcs_active_lvl;
int4 io_in_prog_pid;
int4 fsync_in_prog_pid;
} wcs_conflict_trace_t;
#endif
/* Ensure that at least DB_CSH_RDPOOL_SZ buffers are not dirty by the time an update transaction completes. This guarantees
* a minimum number of buffers are available at all times. Macro should be used whenever second arg is non-zero.
* WBTEST_FORCE_WCS_GET_SPACE and WBTEST_FORCE_WCS_GET_SPACE_CACHEVRFY force wcs_get_space to be called, regardless of wc_in_free.
*/
#define WCS_GET_SPACE(REG, NEEDED, CR) \
( \
( \
(cnl->wc_in_free >= ((int4)(NEEDED) + DB_CSH_RDPOOL_SZ)) \
DEBUG_ONLY( && !(gtm_white_box_test_case_enabled && ((WBTEST_FORCE_WCS_GET_SPACE == gtm_white_box_test_case_number) \
|| (WBTEST_FORCE_WCS_GET_SPACE_CACHEVRFY == gtm_white_box_test_case_number)))) \
) \
|| wcs_get_space(REG, (NEEDED) + DB_CSH_RDPOOL_SZ, CR) \
)
bool wcs_get_space(gd_region *reg, int needed, cache_rec_ptr_t cr);
#endif
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