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Implement disk_rbytes and disk_wbytes for FreeBSD.

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This commit is contained in:
Benoit Dejean
2017-05-20 11:34:25 +02:00
parent 5880e04fcc
commit 779386cb15
1 changed files with 38 additions and 1 deletions
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39
sysdeps/freebsd/procio.c
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@@ -22,8 +22,11 @@
#include <config.h>
#include <glibtop.h>
#include <glibtop/procio.h>
#include <glibtop/error.h>
#include <glibtop_suid.h>
static const unsigned long _glibtop_sysdeps_proc_io = 0;
static const unsigned long _glibtop_sysdeps_proc_io =
(1UL << GLIBTOP_PROC_IO_DISK_RBYTES) + (1UL << GLIBTOP_PROC_IO_DISK_WBYTES);
/* Init function. */
@@ -40,4 +43,38 @@ glibtop_get_proc_io_p (glibtop *server, glibtop_proc_io *buf,
pid_t pid)
{
memset (buf, 0, sizeof (glibtop_proc_io));
struct kinfo_proc *pinfo;
int count;
glibtop_suid_enter (server);
/* Get the process information */
pinfo = kvm_getprocs (server->machine->kd, KERN_PROC_PID, pid, &count);
if ((pinfo == NULL) || (count != 1)) {
glibtop_warn_io_r (server, "kvm_getprocs (%d)", pid);
glibtop_suid_leave (server);
return;
}
glibtop_suid_leave (server);
/* man getrusage
long ru_inblock; == block input operations
long ru_oublock; == block output operations
ru_inblock the number of times the file system had to perform input.
ru_oublock the number of times the file system had to perform output.
And then it says 'account only for real IO'.
But if I write 1MB in a process, I can see ru_oublock increased
1024. So it's neither a number of operations or times.
FIXME: seems the blocksize is 1024 but ...
*/
buf->disk_rbytes = pinfo->ki_rusage.ru_inblock << 10;
buf->disk_wbytes = pinfo->ki_rusage.ru_oublock << 10;
buf->flags = _glibtop_sysdeps_proc_io;
}