Andreas Kling fdfc66db61 Kernel+LibC: Allow clock_gettime() to run without syscalls ... This patch adds a vDSO-like mechanism for exposing the current time as an array of per-clock-source timestamps. LibC's clock_gettime() calls sys$map_time_page() to map the kernel's "time page" into the process address space (at a random address, ofc.) This is only done on first call, and from then on the timestamps are fetched from the time page. This first patch only adds support for CLOCK_REALTIME, but eventually we should be able to support all clock sources this way and get rid of sys$clock_gettime() in the kernel entirely. :^) Accesses are synchronized using two atomic integers that are incremented at the start and finish of the kernel's time page update cycle.		2021-08-10 19:21:16 +02:00
..
APICTimer.cpp	Kernel: Remove unused header includes in Time subtree	2021-07-11 21:37:38 +02:00
APICTimer.h	Kernel: Make HardwareTimer::model() return StringView	2021-08-06 00:37:47 +02:00
HardwareTimer.h	Kernel: Make HardwareTimer::model() return StringView	2021-08-06 00:37:47 +02:00
HPET.cpp	Kernel: Add convenience values to the Memory::Region::Access enum	2021-08-06 22:25:00 +02:00
HPET.h	Kernel: Move Kernel/Memory/ code into Kernel::Memory namespace	2021-08-06 14:05:58 +02:00
HPETComparator.cpp	Kernel: Move special sections into Sections.h	2021-06-24 00:38:23 +02:00
HPETComparator.h	Kernel: Make HardwareTimer::model() return StringView	2021-08-06 00:37:47 +02:00
PIT.cpp	Kernel: Remove unused header includes	2021-08-01 08:10:16 +02:00
PIT.h	Kernel: Make HardwareTimer::model() return StringView	2021-08-06 00:37:47 +02:00
RTC.cpp	Kernel: Pull apart CPU.h	2021-06-24 00:38:23 +02:00
RTC.h	Kernel: Make HardwareTimer::model() return StringView	2021-08-06 00:37:47 +02:00
TimeManagement.cpp	Kernel+LibC: Allow clock_gettime() to run without syscalls	2021-08-10 19:21:16 +02:00
TimeManagement.h	Kernel+LibC: Allow clock_gettime() to run without syscalls	2021-08-10 19:21:16 +02:00