bughz/sigar
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

old NtQuerySystemInformation works as expected for cpu metrics, use it instead of perflib

Browse Source
This commit is contained in:
Doug MacEachern 2005-02-18 20:13:17 +00:00
parent f7a1567a9f
commit 311c1a2f1c
1 changed files with 72 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

75
src/os/win32/win32_sigar.c
View File

@ -481,7 +481,8 @@ SIGAR_DECLARE(int) sigar_cpu_get(sigar_t *sigar, sigar_cpu_t *cpu)
}
}
SIGAR_DECLARE(int) sigar_cpu_list_get(sigar_t *sigar, sigar_cpu_list_t *cpulist)
static int sigar_cpu_list_perflib_get(sigar_t *sigar,
sigar_cpu_list_t *cpulist)
{
int status, i, j, hthread=0;
PERF_INSTANCE_DEFINITION *inst;
@ -534,8 +535,9 @@ SIGAR_DECLARE(int) sigar_cpu_list_get(sigar_t *sigar, sigar_cpu_list_t *cpulist)
cpu->sys += PERF_VAL(PERF_IX_CPU_SYS);
cpu->user += PERF_VAL(PERF_IX_CPU_USER);
get_idle_cpu(sigar, cpu, i, counter_block, perf_offsets);
cpu->nice = 0; /* no nice here */
cpu->nice = cpu->wait = 0; /*N/A*/
/*XXX adding up too much here if xeon, but not using this atm*/
cpu->total += cpu->sys + cpu->user + cpu->idle;
inst = PdhNextInstance(inst);
@ -544,6 +546,73 @@ SIGAR_DECLARE(int) sigar_cpu_list_get(sigar_t *sigar, sigar_cpu_list_t *cpulist)
return SIGAR_OK;
}
static int sigar_cpu_list_ntsys_get(sigar_t *sigar,
sigar_cpu_list_t *cpulist)
{
DWORD retval, num;
int status, i, j, hthread=0;
/* XXX unhardcode 16 */
SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION info[16];
/* into the lungs of hell */
sigar->get_ntsys_info(SystemProcessorPerformanceInformation,
&info, sizeof(info), &retval);
if (!retval) {
return GetLastError();
}
num = retval/sizeof(info[0]);
sigar_cpu_count(sigar);
sigar_cpu_list_create(cpulist);
/*
* if hyper-threading was detected and ncpu is less than
* the number of counter instances, assume there is a counter
* for each logical processor.
* XXX assuming this is correct until have something to test on.
*/
if (sigar->ht_enabled && ((sigar->ncpu * sigar->lcpu) == num)) {
hthread = 1;
}
for (i=0; i<num; i++) {
sigar_cpu_t *cpu;
sigar_uint64_t idle, user, sys;
if (hthread && (i % sigar->lcpu)) {
/* merge times of logical processors */
cpu = &cpulist->data[cpulist->number-1];
}
else {
SIGAR_CPU_LIST_GROW(cpulist);
cpu = &cpulist->data[cpulist->number++];
SIGAR_ZERO(cpu);
}
idle = info[i].IdleTime.QuadPart;
user = info[i].UserTime.QuadPart;
sys = info[i].KernelTime.QuadPart - info[i].IdleTime.QuadPart;
cpu->idle += idle;
cpu->user += user;
cpu->sys += sys;
cpu->nice = cpu->wait = 0; /*N/A*/
cpu->total += idle + user + sys;
}
return SIGAR_OK;
}
SIGAR_DECLARE(int) sigar_cpu_list_get(sigar_t *sigar,
sigar_cpu_list_t *cpulist)
{
if (sigar->get_ntsys_info) {
return sigar_cpu_list_ntsys_get(sigar, cpulist);
}
else {
return sigar_cpu_list_perflib_get(sigar, cpulist);
}
}
SIGAR_DECLARE(int) sigar_uptime_get(sigar_t *sigar,
sigar_uptime_t *uptime)
{