Kernel: kernel doesn't allocate large blocks of data on stack

We used to allocate 1 KiB blocks on multiple places on stack. This
is a problem, since kernel stack shouldn't have to be too big
This commit is contained in:
Bananymous 2023-04-11 23:31:58 +03:00
parent 69f13f1896
commit 7010d8614f
3 changed files with 15 additions and 4 deletions

View File

@ -557,7 +557,10 @@ argument_done:
int fd = TRY(Process::current()->open(arguments[1], O_RDONLY));
BAN::ScopeGuard _([fd] { MUST(Process::current()->close(fd)); });
char buffer[1024] {};
char* buffer = new char[1024];
BAN::ScopeGuard buffer_guard([buffer] { delete[] buffer; });
ASSERT(buffer);
while (size_t n_read = TRY(Process::current()->read(fd, buffer, sizeof(buffer))))
TTY_PRINT("{}", BAN::StringView(buffer, n_read));
TTY_PRINTLN("");
@ -621,7 +624,10 @@ argument_done:
return {};
}
uint8_t buffer[1024];
uint8_t* buffer = new uint8_t[1024];
BAN::ScopeGuard buffer_guard([buffer] { delete[] buffer; });
ASSERT(buffer);
for (size_t i = 1; i < arguments.size(); i++)
{
int fd = TRY(Process::current()->open(arguments[i], O_RDONLY));

View File

@ -58,6 +58,10 @@ namespace Kernel
{
register_bus_irq_handler(this, irq);
uint16_t* identify_buffer = new uint16_t[256];
ASSERT(identify_buffer);
BAN::ScopeGuard _([identify_buffer] { delete[] identify_buffer; });
for (uint8_t i = 0; i < 2; i++)
{
m_devices[i] = new ATADevice(this);
@ -66,7 +70,7 @@ namespace Kernel
BAN::ScopeGuard guard([this, i] { m_devices[i]->unref(); m_devices[i] = nullptr; });
uint16_t identify_buffer[256];
auto type = identify(device, identify_buffer);
if (type == DeviceType::None)
continue;

View File

@ -40,6 +40,7 @@ namespace Kernel
m_height = m_terminal_driver->height();
m_buffer = new Cell[m_width * m_height];
ASSERT(m_buffer);
if (s_tty == nullptr)
s_tty = this;