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time: add specialized vpc_now_darwin to fix -os cross

pull/4733/head
Delyan Angelov 2020-05-05 17:19:25 +03:00
parent dd2a1455dc
commit ddb5a8e6e4
3 changed files with 18 additions and 14 deletions
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11
vlib/time/time_darwin.c.v
View File

@ -36,3 +36,14 @@ fn sys_mono_now_darwin() u64 {
}
return (tm - start_time) * time_base.numer / time_base.denom
}
// NB: vpc_now_darwin is used by `v -profile` .
// It should NOT call *any other v function*, just C functions and casts.
[inline]
fn vpc_now_darwin() u64 {
tm := C.mach_absolute_time()
if time_base.denom == 0 {
C.mach_timebase_info(&time_base)
}
return (tm - start_time) * time_base.numer / time_base.denom
}

8
vlib/time/time_nix.c.v
View File

@ -43,15 +43,7 @@ fn sys_mono_now() u64 {
// It should NOT call *any other v function*, just C functions and casts.
[inline]
fn vpc_now() u64 {
$if macos {
tm := C.mach_absolute_time()
if time_base.denom == 0 {
C.mach_timebase_info(&time_base)
}
return (tm - start_time) * time_base.numer / time_base.denom
} $else {
ts := C.timespec{}
C.clock_gettime(C.CLOCK_MONOTONIC, &ts)
return u64(ts.tv_sec) * 1_000_000_000 + u64(ts.tv_nsec)
}
}

7
vlib/v/gen/profile.v
View File

@ -12,15 +12,16 @@ fn (mut g Gen) profile_fn(fn_name string, is_main bool){
g.writeln('\tatexit(vprint_profile_stats);')
g.writeln('')
}
if fn_name == 'time.vpc_now' {
if fn_name.starts_with('time.vpc_now') {
g.defer_profile_code = ''
} else {
measure_fn_name := if g.pref.os == .mac { 'time__vpc_now_darwin' } else { 'time__vpc_now' }
fn_profile_counter_name := 'vpc_${g.last_fn_c_name}'
fn_profile_counter_name_calls := '${fn_profile_counter_name}_calls'
g.writeln('')
g.writeln('\tdouble _PROF_FN_START = time__vpc_now(); ${fn_profile_counter_name_calls}++; // $fn_name')
g.writeln('\tdouble _PROF_FN_START = ${measure_fn_name}(); ${fn_profile_counter_name_calls}++; // $fn_name')
g.writeln('')
g.defer_profile_code = '\t${fn_profile_counter_name} += time__vpc_now() - _PROF_FN_START;'
g.defer_profile_code = '\t${fn_profile_counter_name} += ${measure_fn_name}() - _PROF_FN_START;'
g.pcs_declarations.writeln('double ${fn_profile_counter_name} = 0.0; u64 ${fn_profile_counter_name_calls} = 0;')
g.pcs << ProfileCounterMeta{ g.last_fn_c_name, fn_profile_counter_name, fn_profile_counter_name_calls }
}