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block all x86 tsc functions in when block

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This commit is contained in:
Colin Davidson
2023-02-21 06:28:55 -08:00
parent 7322b63991
commit 1fc3a25f47
3 changed files with 50 additions and 44 deletions
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core/time/tsc_windows.odin
+14 -12
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@@ -5,20 +5,22 @@ package time
import "core:intrinsics"
import win32 "core:sys/windows"
_x86_get_tsc_frequency :: proc "contextless" () -> (u64, bool) {
qpc_begin: win32.LARGE_INTEGER
win32.QueryPerformanceCounter(&qpc_begin)
tsc_begin := intrinsics.read_cycle_counter()
when ODIN_ARCH == .amd64 {
_x86_get_tsc_frequency :: proc "contextless" () -> (u64, bool) {
qpc_begin: win32.LARGE_INTEGER
win32.QueryPerformanceCounter(&qpc_begin)
tsc_begin := intrinsics.read_cycle_counter()
win32.Sleep(2)
win32.Sleep(2)
qpc_end: win32.LARGE_INTEGER
win32.QueryPerformanceCounter(&qpc_end)
tsc_end := intrinsics.read_cycle_counter()
qpc_end: win32.LARGE_INTEGER
win32.QueryPerformanceCounter(&qpc_end)
tsc_end := intrinsics.read_cycle_counter()
qpc_frequency: win32.LARGE_INTEGER
win32.QueryPerformanceFrequency(&qpc_frequency)
qpc_frequency: win32.LARGE_INTEGER
win32.QueryPerformanceFrequency(&qpc_frequency)
frequency = u64((u128(tsc_end - tsc_begin) * u128(qpc_frequency)) / u128(qpc_end - qpc_begin))
return frequency, true
frequency = u64((u128(tsc_end - tsc_begin) * u128(qpc_frequency)) / u128(qpc_end - qpc_begin))
return frequency, true
}
}