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Merge pull request #4122 from FearlessTobi/port-905

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Port #905 from yuzu: "kernel/vm_manager: Minor changes"
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Merry 2018-08-24 19:01:57 +01:00 committed by GitHub
commit cf4f8463f1
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1 changed files with 14 additions and 14 deletions
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26
src/core/hle/kernel/vm_manager.cpp
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@ -2,6 +2,7 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <iterator>
#include "common/assert.h"
#include "core/hle/kernel/errors.h"
@ -209,9 +210,9 @@ VMManager::VMAIter VMManager::Unmap(VMAIter vma_handle) {
ResultCode VMManager::UnmapRange(VAddr target, u32 size) {
CASCADE_RESULT(VMAIter vma, CarveVMARange(target, size));
VAddr target_end = target + size;
const VAddr target_end = target + size;
VMAIter end = vma_map.end();
const VMAIter end = vma_map.end();
// The comparison against the end of the range must be done using addresses since VMAs can be
// merged during this process, causing invalidation of the iterators.
while (vma != end && vma->second.base < target_end) {
@ -234,9 +235,9 @@ VMManager::VMAHandle VMManager::Reprotect(VMAHandle vma_handle, VMAPermission ne
ResultCode VMManager::ReprotectRange(VAddr target, u32 size, VMAPermission new_perms) {
CASCADE_RESULT(VMAIter vma, CarveVMARange(target, size));
VAddr target_end = target + size;
const VAddr target_end = target + size;
VMAIter end = vma_map.end();
const VMAIter end = vma_map.end();
// The comparison against the end of the range must be done using addresses since VMAs can be
// merged during this process, causing invalidation of the iterators.
while (vma != end && vma->second.base < target_end) {
@ -285,14 +286,14 @@ ResultVal<VMManager::VMAIter> VMManager::CarveVMA(VAddr base, u32 size) {
return ERR_INVALID_ADDRESS;
}
VirtualMemoryArea& vma = vma_handle->second;
const VirtualMemoryArea& vma = vma_handle->second;
if (vma.type != VMAType::Free) {
// Region is already allocated
return ERR_INVALID_ADDRESS_STATE;
}
u32 start_in_vma = base - vma.base;
u32 end_in_vma = start_in_vma + size;
const VAddr start_in_vma = base - vma.base;
const VAddr end_in_vma = start_in_vma + size;
if (end_in_vma > vma.size) {
// Requested allocation doesn't fit inside VMA
@ -315,18 +316,17 @@ ResultVal<VMManager::VMAIter> VMManager::CarveVMARange(VAddr target, u32 size) {
ASSERT_MSG((size & Memory::PAGE_MASK) == 0, "non-page aligned size: {:#10X}", size);
ASSERT_MSG((target & Memory::PAGE_MASK) == 0, "non-page aligned base: {:#010X}", target);
VAddr target_end = target + size;
const VAddr target_end = target + size;
ASSERT(target_end >= target);
ASSERT(target_end <= MAX_ADDRESS);
ASSERT(size > 0);
VMAIter begin_vma = StripIterConstness(FindVMA(target));
VMAIter i_end = vma_map.lower_bound(target_end);
for (auto i = begin_vma; i != i_end; ++i) {
if (i->second.type == VMAType::Free) {
const VMAIter i_end = vma_map.lower_bound(target_end);
if (std::any_of(begin_vma, i_end,
[](const auto& entry) { return entry.second.type == VMAType::Free; })) {
return ERR_INVALID_ADDRESS_STATE;
}
}
if (target != begin_vma->second.base) {
begin_vma = SplitVMA(begin_vma, target - begin_vma->second.base);
@ -373,7 +373,7 @@ VMManager::VMAIter VMManager::SplitVMA(VMAIter vma_handle, u32 offset_in_vma) {
}
VMManager::VMAIter VMManager::MergeAdjacent(VMAIter iter) {
VMAIter next_vma = std::next(iter);
const VMAIter next_vma = std::next(iter);
if (next_vma != vma_map.end() && iter->second.CanBeMergedWith(next_vma->second)) {
iter->second.size += next_vma->second.size;
vma_map.erase(next_vma);