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Kernel: kmalloc can now dump current memory usage

This commit is contained in:
Bananymous 2023-01-13 17:42:19 +02:00
parent f547a788f2
commit 689338b506
1 changed files with 18 additions and 8 deletions
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26
kernel/kernel/kmalloc.cpp
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@ -30,6 +30,12 @@ static constexpr size_t s_kmalloc_chunks_per_size = sizeof(size_t) * 8 / s_kmal
static constexpr size_t s_kmalloc_total_chunks = s_kmalloc_size / s_kmalloc_chunk_size;
static uint8_t s_kmalloc_bitmap[s_kmalloc_total_chunks / 8] { 0 };
static size_t s_kmalloc_free = s_kmalloc_size;
static size_t s_kmalloc_used = 0;
static size_t s_kmalloc_eternal_free = s_kmalloc_eternal_size;
static size_t s_kmalloc_eternal_used = 0;
extern "C" uintptr_t g_kernel_end;
static bool is_kmalloc_chunk_used(size_t index)
@ -52,9 +58,6 @@ void kmalloc_initialize()
if (g_kernel_end > s_kmalloc_base)
Kernel::Panic("Kmalloc: Kernel end is over kmalloc base");
dprintln("kmalloc {} -> {}", (void*)s_kmalloc_base, (void*)s_kmalloc_end);
dprintln("kmalloc eternal {} -> {}", (void*)s_kmalloc_eternal_base, (void*)s_kmalloc_eternal_end);
// Validate kmalloc memory
bool valid = false;
for (size_t i = 0; i < g_multiboot_info->mmap_length;)
@ -83,12 +86,15 @@ void kmalloc_initialize()
}
}
void kmalloc_dump_nodes()
void kmalloc_dump_info()
{
dprintln("kmalloc dump: {8b}{8b}{8b}{8b}{8b}{8b}{8b}{8b}",
s_kmalloc_bitmap[7], s_kmalloc_bitmap[6], s_kmalloc_bitmap[5], s_kmalloc_bitmap[4],
s_kmalloc_bitmap[3], s_kmalloc_bitmap[2], s_kmalloc_bitmap[1], s_kmalloc_bitmap[0]
);
kprintln("kmalloc: {}->{}", (void*)s_kmalloc_base, (void*)s_kmalloc_end);
kprintln(" used: {}", s_kmalloc_used);
kprintln(" free: {}", s_kmalloc_free);
kprintln("kmalloc eternal: {}->{}", (void*)s_kmalloc_eternal_base, (void*)s_kmalloc_eternal_end);
kprintln(" used: {}", s_kmalloc_eternal_used);
kprintln(" free: {}", s_kmalloc_eternal_free);
}
void* kmalloc(size_t size)
@ -132,6 +138,8 @@ void* kmalloc(size_t size, size_t align)
*(size_t*)chunk_address(i) = needed_chunks;
for (size_t j = 0; j < needed_chunks; j++)
s_kmalloc_bitmap[(i + j) / 8] |= (1 << ((i + j) % 8));
s_kmalloc_used += needed_chunks * s_kmalloc_chunk_size;
s_kmalloc_free -= needed_chunks * s_kmalloc_chunk_size;
return (void*)chunk_address(i + s_kmalloc_chunks_per_size);
}
}
@ -153,4 +161,6 @@ void kfree(void* address)
size_t size = *(size_t*)chunk_address(first_chunk);
for (size_t i = 0; i < size; i++)
s_kmalloc_bitmap[(first_chunk + i) / 8] &= ~(1 << ((first_chunk + i) % 8));
s_kmalloc_used -= size * s_kmalloc_chunk_size;
s_kmalloc_free += size * s_kmalloc_chunk_size;
}