forked from Qortal/Brooklyn
75 lines
3.2 KiB
C
75 lines
3.2 KiB
C
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/*
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Copyright (c) 2012, Broadcom Europe Ltd
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of the copyright holder nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef KHRN_INTERLOCK_H
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#define KHRN_INTERLOCK_H
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#include "middleware/khronos/common/khrn_mem.h"
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#include "middleware/khronos/egl/egl_disp.h"
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/* should define KHRN_INTERLOCK_USER_T, KHRN_INTERLOCK_USER_NONE,
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* KHRN_INTERLOCK_USER_TEMP, KHRN_INTERLOCK_USER_WRITING, and
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* KHRN_INTERLOCK_EXTRA_T */
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#include "middleware/khronos/common/2708/khrn_interlock_filler_4.h"
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typedef struct {
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EGL_DISP_IMAGE_HANDLE_T disp_image_handle;
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KHRN_INTERLOCK_USER_T users;
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KHRN_INTERLOCK_EXTRA_T extra;
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} KHRN_INTERLOCK_T;
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/*
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platform-independent implementations
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*/
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extern void khrn_interlock_init(KHRN_INTERLOCK_T *interlock);
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extern void khrn_interlock_term(KHRN_INTERLOCK_T *interlock);
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extern bool khrn_interlock_read(KHRN_INTERLOCK_T *interlock, KHRN_INTERLOCK_USER_T user); /* user allowed to be KHRN_INTERLOCK_USER_NONE */
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extern bool khrn_interlock_write(KHRN_INTERLOCK_T *interlock, KHRN_INTERLOCK_USER_T user); /* user allowed to be KHRN_INTERLOCK_USER_NONE */
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extern KHRN_INTERLOCK_USER_T khrn_interlock_get_writer(KHRN_INTERLOCK_T *interlock);
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extern bool khrn_interlock_release(KHRN_INTERLOCK_T *interlock, KHRN_INTERLOCK_USER_T user);
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extern bool khrn_interlock_write_would_block(KHRN_INTERLOCK_T *interlock);
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extern void khrn_interlock_invalidate(KHRN_INTERLOCK_T *interlock);
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extern bool khrn_interlock_is_invalid(KHRN_INTERLOCK_T *interlock);
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/*
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platform-dependent implementations
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*/
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extern void khrn_interlock_extra_init(KHRN_INTERLOCK_T *interlock);
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extern void khrn_interlock_extra_term(KHRN_INTERLOCK_T *interlock);
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extern void khrn_interlock_read_immediate(KHRN_INTERLOCK_T *interlock);
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extern void khrn_interlock_write_immediate(KHRN_INTERLOCK_T *interlock);
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extern void khrn_interlock_flush(KHRN_INTERLOCK_USER_T user);
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#endif
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