diff options
author | Tobias Hunger <tobias.hunger@qt.io> | 2019-04-16 16:32:08 +0200 |
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committer | Tobias Hunger <tobias.hunger@qt.io> | 2019-04-16 16:32:08 +0200 |
commit | 6630937e63ae5797487b86743a7733c8ae5cc42c (patch) | |
tree | 3d53dacf6430f9099e1fb20835881205de674961 /src/3rdparty/angle/src/libANGLE/HandleRangeAllocator.h | |
parent | 37ed6dae00640f9cc980ffda05347c12a7eb5d7e (diff) | |
parent | c7af193d2e49e9f10b86262e63d8d13abf72b5cf (diff) |
Merge commit 'dev' into 'wip/cmake-merge'
Change-Id: I176c40d031be26a1dd1cf08843e448a660598783
Diffstat (limited to 'src/3rdparty/angle/src/libANGLE/HandleRangeAllocator.h')
-rw-r--r-- | src/3rdparty/angle/src/libANGLE/HandleRangeAllocator.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/libANGLE/HandleRangeAllocator.h b/src/3rdparty/angle/src/libANGLE/HandleRangeAllocator.h new file mode 100644 index 0000000000..4d4b6f4f69 --- /dev/null +++ b/src/3rdparty/angle/src/libANGLE/HandleRangeAllocator.h @@ -0,0 +1,60 @@ +// +// Copyright (c) 2002-2016 The ANGLE Project Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. +// + +// HandleRangeAllocator.h: Defines the gl::HandleRangeAllocator class, which is used to +// allocate contiguous ranges of GL path handles. + +#ifndef LIBANGLE_HANDLERANGEALLOCATOR_H_ +#define LIBANGLE_HANDLERANGEALLOCATOR_H_ + +#include <map> + +#include "angle_gl.h" +#include "common/angleutils.h" + +namespace gl +{ + +// Allocates contiguous ranges of path object handles. +class HandleRangeAllocator final : angle::NonCopyable +{ + public: + static const GLuint kInvalidHandle; + + HandleRangeAllocator(); + ~HandleRangeAllocator(); + + // Allocates a new path handle. + GLuint allocate(); + + // Allocates a handle starting at or above the value of |wanted|. + // Note: may wrap if it starts near limit. + GLuint allocateAtOrAbove(GLuint wanted); + + // Allocates |range| amount of contiguous paths. + // Returns the first id to |first_id| or |kInvalidHandle| if + // allocation failed. + GLuint allocateRange(GLuint range); + + // Marks an id as used. Returns false if handle was already used. + bool markAsUsed(GLuint handle); + + // Release handle. + void release(GLuint handle); + + // Release a |range| amount of contiguous handles, starting from |first| + void releaseRange(GLuint first, GLuint range); + + // Checks whether or not a resource ID is in use. + bool isUsed(GLuint handle) const; + + private: + std::map<GLuint, GLuint> mUsed; +}; + +} // namespace gl + +#endif // LIBANGLE_HANDLERANGEALLOCATOR_H_
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