wraitii
369c2e8801
GUIObjectBase is made a IGUIObject* to avoid including those headers un-necessarily. Subsequent diffs ought to clean up the various of pointers for that with a similar type with reference semantics. Also: - Add standard C and C++ headers (mostly cstring for memcpy, string and vector) where needed. - Swap out some includes for forward declarations - Clean up un-necessary boost includes in precompiled and other headers. - Clean up precompiled headers, including fewer things. - Move ACPI to the windows-specific folder as it's included there only and mostly specific to that platform. Thanks Stan for the testing. Differential Revision: https://code.wildfiregames.com/D3129 This was SVN commit r24352.
148 lines
4.0 KiB
C++
148 lines
4.0 KiB
C++
/* Copyright (C) 2020 Wildfire Games.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* dynamic (expandable) array
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*/
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#include "precompiled.h"
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#include "lib/allocators/dynarray.h"
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#include "lib/alignment.h"
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#include "lib/sysdep/vm.h"
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#include <cstring>
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#include <string>
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static Status validate_da(DynArray* da)
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{
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if(!da)
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WARN_RETURN(ERR::INVALID_POINTER);
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// u8* const base = da->base;
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const size_t max_size_pa = da->max_size_pa;
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const size_t cur_size = da->cur_size;
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const size_t pos = da->pos;
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// note: this happens if max_size == 0
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// if(debug_IsPointerBogus(base))
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// WARN_RETURN(ERR::_1);
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// note: don't check if base is page-aligned -
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// might not be true for 'wrapped' mem regions.
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if(!IsAligned(max_size_pa, g_PageSize))
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WARN_RETURN(ERR::_3);
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if(cur_size > max_size_pa)
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WARN_RETURN(ERR::_4);
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if(pos > cur_size || pos > max_size_pa)
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WARN_RETURN(ERR::_5);
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return INFO::OK;
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}
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#define CHECK_DA(da) RETURN_STATUS_IF_ERR(validate_da(da))
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Status da_alloc(DynArray* da, size_t max_size)
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{
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ENSURE(max_size != 0);
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const size_t max_size_pa = Align<g_PageSize>(max_size);
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u8* p = (u8*)vm::ReserveAddressSpace(max_size_pa);
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if(!p)
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return ERR::NO_MEM; // NOWARN (already done in vm)
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da->base = p;
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da->max_size_pa = max_size_pa;
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da->cur_size = 0;
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da->cur_size_pa = 0;
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da->pos = 0;
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CHECK_DA(da);
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return INFO::OK;
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}
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Status da_free(DynArray* da)
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{
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CHECK_DA(da);
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vm::ReleaseAddressSpace(da->base, da->max_size_pa);
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// wipe out the DynArray for safety
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memset(da, 0, sizeof(*da));
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return INFO::OK;
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}
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Status da_set_size(DynArray* da, size_t new_size)
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{
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CHECK_DA(da);
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// determine how much to add/remove
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const size_t cur_size_pa = Align<g_PageSize>(da->cur_size);
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const size_t new_size_pa = Align<g_PageSize>(new_size);
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const ssize_t size_delta_pa = (ssize_t)new_size_pa - (ssize_t)cur_size_pa;
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// not enough memory to satisfy this expand request: abort.
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// note: do not complain - some allocators (e.g. file_cache)
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// legitimately use up all available space.
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if(new_size_pa > da->max_size_pa)
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return ERR::LIMIT; // NOWARN
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u8* end = da->base + cur_size_pa;
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bool ok = true;
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// expanding
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if(size_delta_pa > 0)
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{
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ok = vm::Commit(uintptr_t(end), size_delta_pa);
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if(!ok)
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debug_printf("Commit failed (%p %lld)\n", (void *)end, (long long)size_delta_pa);
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}
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// shrinking
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else if(size_delta_pa < 0)
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ok = vm::Decommit(uintptr_t(end+size_delta_pa), -size_delta_pa);
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// else: no change in page count, e.g. if going from size=1 to 2
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// (we don't want mem_* to have to handle size=0)
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da->cur_size = new_size;
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da->cur_size_pa = new_size_pa;
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CHECK_DA(da);
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return ok? INFO::OK : ERR::FAIL;
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}
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Status da_reserve(DynArray* da, size_t size)
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{
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if(da->pos+size > da->cur_size_pa)
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RETURN_STATUS_IF_ERR(da_set_size(da, da->cur_size_pa+size));
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da->cur_size = std::max(da->cur_size, da->pos+size);
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return INFO::OK;
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}
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Status da_append(DynArray* da, const void* data, size_t size)
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{
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RETURN_STATUS_IF_ERR(da_reserve(da, size));
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memcpy(da->base+da->pos, data, size);
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da->pos += size;
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return INFO::OK;
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}
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