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Added a missing return value in vm_resize_region().

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Cleaned the code a bit.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@586 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
2002-08-05 05:22:27 +00:00
parent c931f4823d
commit 75faf9fda3
1 changed files with 37 additions and 25 deletions
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src/kernel/core/vm/vm.c
+37 -25
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@@ -1573,60 +1573,72 @@ int vm_delete_aspace(aspace_id aid)
return B_NO_ERROR;
}
int vm_resize_region (aspace_id aid, region_id rid, size_t newSize)
int
vm_resize_region(aspace_id aid, region_id rid, size_t newSize)
{
vm_cache_ref *myCacheRef;
vm_region *myRegion,*current;
size_t oldSize;
bool failed=false;
// Steps:
//1) Get the vm_cache_ref for the region
myRegion=vm_get_region_by_id(rid);
bool failed = false;
// Steps:
//1) Get the vm_cache_ref for the region
myRegion = vm_get_region_by_id(rid);
if (!myRegion)
return B_ERROR;
myCacheRef=myRegion->cache_ref;
// 2) Resize all of the regions from the vm_cache_ref (fix them all and fail if they can't be resized)
myCacheRef = myRegion->cache_ref;
// 2) Resize all of the regions from the vm_cache_ref (fix them all and fail if they can't be resized)
oldSize = myRegion->size;
for (current=myCacheRef->region_list;current;current=current->cache_next)
{
if (current->aspace_next->base<=(current->base+newSize))
{
failed=true;
for (current = myCacheRef->region_list;current;current = current->cache_next) {
if (current->aspace_next->base <= (current->base + newSize)) {
failed = true;
break;
}
current->size=newSize;
}
if (failed) // OH NO! Go back and fix all of the broken ones...
{
for (current=myCacheRef->region_list;current;current=current->cache_next)
current->size=oldSize;
current->size = newSize;
}
if (failed) { // OH NO! Go back and fix all of the broken ones...
for (current = myCacheRef->region_list;current;current = current->cache_next)
current->size = oldSize;
return B_ERROR;
}
// 3) Update the vm_cache size
myCacheRef->cache->virtual_size=newSize;
}
// 3) Update the vm_cache size
myCacheRef->cache->virtual_size = newSize;
return 0;
}
int vm_aspace_walk_start(struct hash_iterator *i)
int
vm_aspace_walk_start(struct hash_iterator *i)
{
hash_open(aspace_table, i);
return 0;
}
vm_address_space *vm_aspace_walk_next(struct hash_iterator *i)
vm_address_space *
vm_aspace_walk_next(struct hash_iterator *i)
{
vm_address_space *aspace;
acquire_sem_etc(aspace_hash_sem, READ_COUNT, 0, 0);
aspace = hash_next(aspace_table, i);
if(aspace)
if (aspace)
atomic_add(&aspace->ref_count, 1);
release_sem_etc(aspace_hash_sem, READ_COUNT, 0);
return aspace;
}
static int vm_thread_dump_max_commit(void *unused)
static int
vm_thread_dump_max_commit(void *unused)
{
int oldmax = -1;