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[kernel] Add spinlocks to vm_space, frame_allocator

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Also updated spinlock interface to be an object, and added a scoped lock
object that uses it as well.
This commit is contained in:
Justin C. Miller
2021-02-10 23:57:51 -08:00
parent 793bba95b5
commit 8c0d52d0fe
7 changed files with 68 additions and 29 deletions
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12
src/kernel/frame_allocator.cpp
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@@ -1,6 +1,6 @@
#include "kernel_memory.h"
#include "kutil/assert.h"
#include "kutil/memory.h"
#include "frame_allocator.h"
#include "kernel_args.h"
#include "kernel_memory.h"
@@ -17,8 +17,8 @@ frame_allocator::get()
}
frame_allocator::frame_allocator(kernel::args::frame_block *frames, size_t count) :
m_blocks(frames),
m_count(count)
m_blocks {frames},
m_count {count}
{
}
@@ -32,6 +32,8 @@ bsf(uint64_t v)
size_t
frame_allocator::allocate(size_t count, uintptr_t *address)
{
kutil::scoped_lock lock {m_lock};
for (long i = m_count - 1; i >= 0; --i) {
frame_block &block = m_blocks[i];
@@ -80,6 +82,8 @@ frame_allocator::allocate(size_t count, uintptr_t *address)
void
frame_allocator::free(uintptr_t address, size_t count)
{
kutil::scoped_lock lock {m_lock};
kassert(address % frame_size == 0, "Trying to free a non page-aligned frame!");
if (!count)
@@ -116,6 +120,8 @@ frame_allocator::free(uintptr_t address, size_t count)
void
frame_allocator::used(uintptr_t address, size_t count)
{
kutil::scoped_lock lock {m_lock};
kassert(address % frame_size == 0, "Trying to mark a non page-aligned frame!");
if (!count)