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Extending the cpu number from 32 to 1024 (bgo #323354, bgo #681632)

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From: Jason Xing <xinggang861@gmail.com>

In 'Bug 323354 - Support a dynamic number of CPUs', there will be a
solution which can dynamically allocate memory for large number of
CPUs. As libgtop supports multiple operating systems, this work
may take some time.

This patch is a temporary patch, which worked before the whole
solution comes out. It only supports linux platform with CPU number
up to 1024.

There are two Macroes which limit the statistics of CPU. One is
GLIBTOP_NCPU. The other is a buffer size. This buffer used to read
/proc/stat contents into.

https://bugzilla.gnome.org/show_bug.cgi?id=323354
https://bugzilla.gnome.org/show_bug.cgi?id=681632
This commit is contained in:
Jason Xing
2013-12-12 22:36:10 +02:00
committed by Robert Roth
parent 47bcd423b5
commit efaaf6eb77
3 changed files with 5 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
include/glibtop/cpu.h
View File

@@ -54,7 +54,7 @@ G_BEGIN_DECLS
Yes we are :)
Nobody should really be using more than 32 processors.
*/
#define GLIBTOP_NCPU 32
#define GLIBTOP_NCPU 1024
typedef struct _glibtop_cpu glibtop_cpu;

3
sysdeps/linux/cpu.c
View File

@@ -66,11 +66,12 @@ _glibtop_init_cpu_s (glibtop *server)
/* Provides information about cpu usage. */
#define FILENAME "/proc/stat"
#define STAT_BUFSIZ 81920
void
glibtop_get_cpu_s (glibtop *server, glibtop_cpu *buf)
{
char buffer [BUFSIZ], *p;
char buffer [STAT_BUFSIZ], *p;
int i;
memset (buf, 0, sizeof (glibtop_cpu));

3
sysdeps/linux/open.c
View File

@@ -61,13 +61,14 @@ static void set_linux_version(glibtop *server)
/* Opens pipe to gtop server. Returns 0 on success and -1 on error. */
#define FILENAME "/proc/stat"
#define STAT_BUFSIZ 81920
void
glibtop_open_s (glibtop *server, const char *program_name,
const unsigned long features,
const unsigned flags)
{
char buffer [BUFSIZ], *p = buffer;
char buffer [STAT_BUFSIZ], *p = buffer;
server->name = program_name;