61 lines
2.0 KiB
C
61 lines
2.0 KiB
C
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/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along with
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Sortix. If not, see <http://www.gnu.org/licenses/>.
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sortix/kernel/segment.h
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Structure representing a segment in a process.
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*******************************************************************************/
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#ifndef INCLUDE_SORTIX_KERNEL_SEGMENT_H
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#define INCLUDE_SORTIX_KERNEL_SEGMENT_H
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namespace Sortix {
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class Process;
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struct segment
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{
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uintptr_t addr;
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size_t size;
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int prot;
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};
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static inline int segmentcmp(const void* a_ptr, const void* b_ptr)
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{
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const struct segment* a = (const struct segment*) a_ptr;
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const struct segment* b = (const struct segment*) b_ptr;
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return a->addr < b->addr ? -1 :
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b->addr < a->addr ? 1 :
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a->size < b->size ? -1 :
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b->size < a->size ? 1 :
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0 ;
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}
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bool AreSegmentsOverlapping(const struct segment* a, const struct segment* b);
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bool IsUserspaceSegment(const struct segment* segment);
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struct segment* FindOverlappingSegment(Process* process, const struct segment* new_segment);
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bool IsSegmentOverlapping(Process* process, const struct segment* new_segment);
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bool AddSegment(Process* process, const struct segment* new_segment);
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bool PlaceSegment(struct segment* solution, Process* process, void* addr_ptr,
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size_t size, int flags);
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} // namespace Sortix
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#endif
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