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Start refactoring the windowing system to use an event loop.

Browse source 
Userspace programs can now open /dev/gui_events and read a stream of GUI_Event
structs one at a time.

I was stuck on a stupid problem where we'd reenter Scheduler::yield() due to
having one of the has_data_available_for_reading() implementations using locks.
This commit is contained in:
Andreas Kling 2019-01-14 14:21:51 +01:00
parent b4da4e8fbd
commit b0e3f73375
46 changed files with 283 additions and 292 deletions
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6
Kernel/i386.cpp
View file

@ -7,7 +7,7 @@
#include "IRQHandler.h"
#include "PIC.h"
//#define PAGE_FAULT_DEBUG
#define PAGE_FAULT_DEBUG
struct DescriptorTablePointer {
word size;
@ -34,7 +34,7 @@ word gdt_alloc_entry()
void gdt_free_entry(word entry)
{
s_gdt_freelist->unchecked_append(entry);
s_gdt_freelist->append(entry);
}
extern "C" void handle_irq();
@ -325,7 +325,7 @@ void gdt_init()
s_gdt_freelist = new Vector<word, KmallocEternalAllocator>();
s_gdt_freelist->ensureCapacity(256);
for (size_t i = s_gdtLength; i < 256; ++i)
s_gdt_freelist->unchecked_append(i * 8);
s_gdt_freelist->append(i * 8);
s_gdtLength = 256;
s_gdtr.address = s_gdt;