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Merge pull request #2520 from matias-eduardo/master

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Allow for custom sleep duration in tsc frequency fallback
This commit is contained in:
Jeroen van Rijn
2023-05-09 23:03:47 +02:00
committed by GitHub
parent 33d0e2037b 4e146a75b6
commit 0f9e747583
2 changed files with 14 additions and 7 deletions
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core/prof/spall/spall.odin
+12 -5
View File
@@ -67,16 +67,15 @@ Buffer :: struct {
BUFFER_DEFAULT_SIZE :: 0x10_0000
context_create :: proc(filename: string) -> (ctx: Context, ok: bool) #optional_ok {
context_create_with_scale :: proc(filename: string, precise_time: bool, timestamp_scale: f64) -> (ctx: Context, ok: bool) #optional_ok {
fd, err := os.open(filename, os.O_WRONLY | os.O_APPEND | os.O_CREATE | os.O_TRUNC, 0o600)
if err != os.ERROR_NONE {
return
}
ctx.fd = fd
freq, freq_ok := time.tsc_frequency()
ctx.precise_time = freq_ok
ctx.timestamp_scale = ((1 / f64(freq)) * 1_000_000) if freq_ok else 1
ctx.fd = fd
ctx.precise_time = precise_time
ctx.timestamp_scale = timestamp_scale
temp := [size_of(Manual_Header)]u8{}
_build_header(temp[:], ctx.timestamp_scale)
@@ -85,6 +84,14 @@ context_create :: proc(filename: string) -> (ctx: Context, ok: bool) #optional_o
return
}
context_create_with_sleep :: proc(filename: string, sleep := 2 * time.Second) -> (ctx: Context, ok: bool) #optional_ok {
freq, freq_ok := time.tsc_frequency(sleep)
timestamp_scale: f64 = ((1 / f64(freq)) * 1_000_000) if freq_ok else 1
return context_create_with_scale(filename, freq_ok, timestamp_scale)
}
context_create :: proc{context_create_with_scale, context_create_with_sleep}
context_destroy :: proc(ctx: ^Context) {
if ctx == nil {
return
core/time/perf.odin
+2 -2
View File
@@ -70,7 +70,7 @@ has_invariant_tsc :: proc "contextless" () -> bool {
return false
}
tsc_frequency :: proc "contextless" () -> (u64, bool) {
tsc_frequency :: proc "contextless" (fallback_sleep := 2 * Second) -> (u64, bool) {
if !has_invariant_tsc() {
return 0, false
}
@@ -81,7 +81,7 @@ tsc_frequency :: proc "contextless" () -> (u64, bool) {
tsc_begin := intrinsics.read_cycle_counter()
tick_begin := tick_now()
sleep(2 * Second)
sleep(fallback_sleep)
tsc_end := intrinsics.read_cycle_counter()
tick_end := tick_now()