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Terminal: Redraw entire line if any of its characters are dirty.

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This means we only have to do one fill_rect() per line and the whole process
ends up being ~10% faster than before.

Also added a read_tsc() syscall to give userspace access to the TSC.
This commit is contained in:
Andreas Kling 2019-01-25 02:09:29 +01:00
parent 11b73c38d8
commit 267a903dd0
9 changed files with 108 additions and 35 deletions
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1
Kernel/Syscall.h
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@ -70,6 +70,7 @@
__ENUMERATE_SYSCALL(select) \
__ENUMERATE_SYSCALL(unlink) \
__ENUMERATE_SYSCALL(poll) \
__ENUMERATE_SYSCALL(read_tsc) \
__ENUMERATE_SYSCALL(gui_create_window) \
__ENUMERATE_SYSCALL(gui_destroy_window) \
__ENUMERATE_SYSCALL(gui_get_window_backing_store) \