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ntdll: Fix time units for SystemPerformanceProcessorInformation, and steal idle time for kernel time.

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Maarten Lankhorst 2011-03-06 18:17:06 +01:00 committed by Alexandre Julliard
parent 254b8f85b5
commit 67755d2593
1 changed files with 22 additions and 15 deletions
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37
dlls/ntdll/nt.c
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@ -1310,6 +1310,25 @@ void fill_cpu_info(void)
cached_sci.Architecture, cached_sci.Level, cached_sci.Revision, cached_sci.FeatureSet);
}
static void fill_in_sppi(SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION *sppi, DWORD64 idle, DWORD64 sys, DWORD64 usr)
{
DWORD64 steal;
sppi->IdleTime.QuadPart = idle * 10000000 / sysconf(_SC_CLK_TCK);
sppi->KernelTime.QuadPart = sys * 10000000 / sysconf(_SC_CLK_TCK);
sppi->UserTime.QuadPart = usr * 10000000 / sysconf(_SC_CLK_TCK);
/* Add 1% from idle time to kernel time, to make .NET happy */
steal = sppi->IdleTime.QuadPart / 100;
sppi->IdleTime.QuadPart -= steal;
sppi->KernelTime.QuadPart += steal;
/* DPC time */
sppi->Reserved1[0].QuadPart = 0;
/* Interrupt time */
sppi->Reserved1[1].QuadPart = 0;
sppi->Reserved2 = 0;
}
/******************************************************************************
* NtQuerySystemInformation [NTDLL.@]
* ZwQuerySystemInformation [NTDLL.@]
@ -1610,11 +1629,7 @@ NTSTATUS WINAPI NtQuerySystemInformation(
usr += nice;
sppi = RtlAllocateHeap(GetProcessHeap(), 0,
sizeof(SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION));
sppi->IdleTime.QuadPart = idle;
sppi->KernelTime.QuadPart = sys;
sppi->UserTime.QuadPart = usr+nice;
sppi->Reserved1[0].QuadPart = 0;
sppi->Reserved1[1].QuadPart = 0;
fill_in_sppi(sppi, idle, sys, usr);
cpus = 1;
len = sizeof(SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION);
}
@ -1638,20 +1653,12 @@ NTSTATUS WINAPI NtQuerySystemInformation(
usr += nice;
out_cpus --;
if (name[3]=='0') /* first cpu */
{
sppi->IdleTime.QuadPart = idle;
sppi->KernelTime.QuadPart = sys;
sppi->UserTime.QuadPart = usr;
}
fill_in_sppi(sppi, idle, sys, usr);
else /* new cpu */
{
len = sizeof(SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION) * (cpus+1);
sppi = RtlReAllocateHeap(GetProcessHeap(), 0, sppi, len);
sppi[cpus].IdleTime.QuadPart = idle;
sppi[cpus].KernelTime.QuadPart = sys;
sppi[cpus].UserTime.QuadPart = usr;
sppi[cpus].Reserved1[0].QuadPart = 0;
sppi[cpus].Reserved1[1].QuadPart = 0;
fill_in_sppi(sppi + cpus, idle, sys, usr);
cpus++;
}
}