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u/handles: Add graphics sync handle helpers.

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This commit is contained in:
Ryan Pavlik 2021-04-06 17:17:29 -05:00 committed by Jakob Bornecrantz
parent c876087ee7
commit 61c1044089
2 changed files with 106 additions and 5 deletions
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76
src/xrt/auxiliary/util/u_handles.c
View file

@ -1,4 +1,4 @@
// Copyright 2020, Collabora, Ltd.
// Copyright 2020-2021, Collabora, Ltd.
// SPDX-License-Identifier: BSL-1.0
/*!
* @file
@ -11,6 +11,12 @@
#include "u_handles.h"
/*
*
* Graphics Buffer Handles
*
*/
#if defined(XRT_GRAPHICS_BUFFER_HANDLE_IS_AHARDWAREBUFFER)
#include <android/hardware_buffer.h>
@ -89,3 +95,71 @@ u_graphics_buffer_unref(xrt_graphics_buffer_handle_t *handle_ptr)
release_graphics_handle(handle);
*handle_ptr = XRT_GRAPHICS_BUFFER_HANDLE_INVALID;
}
/*
*
* Graphics Sync Handles
*
*/
#if defined(XRT_GRAPHICS_SYNC_HANDLE_IS_FD)
#include <unistd.h>
static inline void
release_sync_handle(xrt_graphics_sync_handle_t handle)
{
close(handle);
}
static inline xrt_graphics_sync_handle_t
ref_sync_handle(xrt_graphics_sync_handle_t handle)
{
return dup(handle);
}
#elif defined(XRT_GRAPHICS_SYNC_HANDLE_IS_WIN32_HANDLE)
static inline void
release_sync_handle(xrt_graphics_sync_handle_t handle)
{
CloseHandle(handle);
}
static inline xrt_graphics_sync_handle_t
ref_sync_handle(xrt_graphics_sync_handle_t handle)
{
HANDLE self = GetCurrentProcess();
HANDLE result = NULL;
if (DuplicateHandle(self, handle, self, &result, 0, FALSE, DUPLICATE_SAME_ACCESS) != 0) {
return result;
}
return NULL;
}
#else
#error "need port"
#endif
xrt_graphics_sync_handle_t
u_graphics_sync_ref(xrt_graphics_sync_handle_t handle)
{
if (xrt_graphics_sync_handle_is_valid(handle)) {
return ref_sync_handle(handle);
}
return XRT_GRAPHICS_SYNC_HANDLE_INVALID;
}
void
u_graphics_sync_unref(xrt_graphics_sync_handle_t *handle_ptr)
{
if (handle_ptr == NULL) {
return;
}
xrt_graphics_sync_handle_t handle = *handle_ptr;
if (!xrt_graphics_sync_handle_is_valid(handle)) {
return;
}
release_sync_handle(handle);
*handle_ptr = XRT_GRAPHICS_SYNC_HANDLE_INVALID;
}

35
src/xrt/auxiliary/util/u_handles.h
View file

@ -1,4 +1,4 @@
// Copyright 2020, Collabora, Ltd.
// Copyright 2020-20211, Collabora, Ltd.
// SPDX-License-Identifier: BSL-1.0
/*!
* @file
@ -17,13 +17,15 @@
#ifdef __cplusplus
extern "C" {
#endif
/*!
* Increase the reference count on the buffer handle, returning the new
* reference.
*
* Depending on the underlying type, the value may be the same or different than
* what was passed in. It should be retained for use at release time,
* regardless.
*
* Depending on the underlying type, the value may be the same or different than what was passed in. It should be
* retained for use at release time, regardless. (For example, if the underlying native handle does not expose reference
* counting, it may be duplicated and the duplicate returned.)
*
* @public @memberof xrt_graphics_buffer_handle_t
*/
@ -42,6 +44,31 @@ u_graphics_buffer_ref(xrt_graphics_buffer_handle_t handle);
void
u_graphics_buffer_unref(xrt_graphics_buffer_handle_t *handle);
/*!
* Increase the reference count on the sync handle, returning the new
* reference.
*
* Depending on the underlying type, the value may be the same or different than what was passed in. It should be
* retained for use at release time, regardless. (For example, if the underlying native handle does not expose reference
* counting, it may be duplicated and the duplicate returned.)
*
* @public @memberof xrt_graphics_sync_handle_t
*/
xrt_graphics_sync_handle_t
u_graphics_sync_ref(xrt_graphics_sync_handle_t handle);
/*!
* Decrease the reference count/release the handle reference passed in.
*
* Be sure to only call this once per handle.
*
* Performs null-check and clears the value after unreferencing.
*
* @public @memberof xrt_graphics_sync_handle_t
*/
void
u_graphics_sync_unref(xrt_graphics_sync_handle_t *handle);
#ifdef __cplusplus
} // extern "C"
#endif