mirror of
https://github.com/RGBCube/serenity
synced 2025-07-25 05:27:43 +00:00
Kernel: Serialize debug output
This commit is contained in:
parent
1da7fea602
commit
3ac6d31b45
5 changed files with 177 additions and 20 deletions
|
@ -28,6 +28,7 @@
|
|||
#include <AK/Memory.h>
|
||||
#include <Kernel/Heap/SlabAllocator.h>
|
||||
#include <Kernel/Heap/kmalloc.h>
|
||||
#include <Kernel/SpinLock.h>
|
||||
#include <Kernel/VM/Region.h>
|
||||
|
||||
#define SANITIZE_SLABS
|
||||
|
@ -50,22 +51,22 @@ public:
|
|||
}
|
||||
slabs[0].next = nullptr;
|
||||
m_freelist = &slabs[slab_count - 1];
|
||||
m_num_allocated = 0;
|
||||
m_num_free = slab_count;
|
||||
m_num_allocated.store(0, AK::MemoryOrder::memory_order_release);
|
||||
m_num_free.store(slab_count, AK::MemoryOrder::memory_order_release);
|
||||
}
|
||||
|
||||
constexpr size_t slab_size() const { return templated_slab_size; }
|
||||
|
||||
void* alloc()
|
||||
{
|
||||
InterruptDisabler disabler;
|
||||
ScopedSpinLock lock(m_lock);
|
||||
if (!m_freelist)
|
||||
return kmalloc(slab_size());
|
||||
ASSERT(m_freelist);
|
||||
void* ptr = m_freelist;
|
||||
m_freelist = m_freelist->next;
|
||||
++m_num_allocated;
|
||||
--m_num_free;
|
||||
m_num_allocated.fetch_add(1, AK::MemoryOrder::memory_order_acq_rel);
|
||||
m_num_free.fetch_sub(1, AK::MemoryOrder::memory_order_acq_rel);
|
||||
#ifdef SANITIZE_SLABS
|
||||
memset(ptr, SLAB_ALLOC_SCRUB_BYTE, slab_size());
|
||||
#endif
|
||||
|
@ -74,7 +75,7 @@ public:
|
|||
|
||||
void dealloc(void* ptr)
|
||||
{
|
||||
InterruptDisabler disabler;
|
||||
ScopedSpinLock lock(m_lock);
|
||||
ASSERT(ptr);
|
||||
if (ptr < m_base || ptr >= m_end) {
|
||||
kfree(ptr);
|
||||
|
@ -86,12 +87,12 @@ public:
|
|||
memset(((FreeSlab*)ptr)->padding, SLAB_DEALLOC_SCRUB_BYTE, sizeof(FreeSlab::padding));
|
||||
#endif
|
||||
m_freelist = (FreeSlab*)ptr;
|
||||
++m_num_allocated;
|
||||
--m_num_free;
|
||||
m_num_allocated.fetch_sub(1, AK::MemoryOrder::memory_order_acq_rel);
|
||||
m_num_free.fetch_add(1, AK::MemoryOrder::memory_order_acq_rel);
|
||||
}
|
||||
|
||||
size_t num_allocated() const { return m_num_allocated; }
|
||||
size_t num_free() const { return m_num_free; }
|
||||
size_t num_allocated() const { return m_num_allocated.load(AK::MemoryOrder::memory_order_consume); }
|
||||
size_t num_free() const { return m_num_free.load(AK::MemoryOrder::memory_order_consume); }
|
||||
|
||||
private:
|
||||
struct FreeSlab {
|
||||
|
@ -101,10 +102,11 @@ private:
|
|||
|
||||
// NOTE: These are not default-initialized to prevent an init-time constructor from overwriting them
|
||||
FreeSlab* m_freelist;
|
||||
size_t m_num_allocated;
|
||||
size_t m_num_free;
|
||||
Atomic<size_t> m_num_allocated;
|
||||
Atomic<size_t> m_num_free;
|
||||
void* m_base;
|
||||
void* m_end;
|
||||
SpinLock<u32> m_lock;
|
||||
|
||||
static_assert(sizeof(FreeSlab) == templated_slab_size);
|
||||
};
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue