Hi Nasser
I'm assuming pcp is a typo in your mail.
The hardware counters are exposed using libcpc. So please #include
<libcpc.h> in your source code and have the "-lcpc" option when you compile.
Regarding the correct access to the counters.
man cpc_getcpuver(3CPC) says...
NOTES
The cpc_getcpuver(), cpc_getcciname(), cpc_getcpuref(),
cpc_getusage(), cpc_getnpic(), and cpc_walk_names() func-
tions exist for binary compatibility only. Source containing
these functions will not compile. These functions are
obsolete and might be removed in a future release. Applica-
tions should use cpc_cciname(3CPC), cpc_cpuref(3CPC),
cpc_npic(3CPC), and cpc_npic(3CPC) instead.
and man cpc_bind_event(3CPC) says...
NOTES
The cpc_bind_event(), cpc_take_sample(), and cpc_rele()
functions exist for binary compatibility only. Source con-
taining these functions will not compile. These functions
are obsolete and might be removed in a future release.
Applications should use cpc_bind_curlwp(3CPC),
cpc_set_sample(3CPC), and cpc_unbind(3CPC) instead.
man cpc_bind_curlwp(3CPC) contains two examples on how to use the
current cpc interfaces.
More detailed examples that use this interface are cputrack(1) and
cpustat(1M). See
http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/cpc/
/kuriakose
Nasser Ghazali wrote:
I am going to use some hardware counter functions using libpcp library. The machine I am using is a UltraSPARC T2000 (Niagara) machine, using Open Solaris 11.
The code is:
#include <pcplib.h>
:
int cpc_cpuver;
cpc_event_t cpc_event;
char *cpc_arg="pic0=IC_miss,pic1=Instr_cnt";
:
cpc_cpuver=cpc_getcpuver();
cpc_take_sample(&cpc_event);
:
This error raise while i am going to compile my code:
error: aggregate ‘cpc_event_t event’ has incomplete type and cannot be
defined
When I add this part manually into my code :
typedef struct _cpc_event {
int ce_cpuver;
hrtime_t ce_hrt;
uint64_t ce_tick;
uint64_t ce_pic[2];
uint64_t ce_pcr;
} cpc_event_t ;
then I can compile and run it but still there is a problem. Most of the times cpc_getcpuver() return -1 and so other functions don't work anymore.
I guess I am using wrong header file or something like that. Would you please
help me to fix it?
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