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library: size two read buffers with manifest constants

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The meminfo & vmstat file read buffers are now defined
through symbolic constants next to the symbolic names.

[ recent attention to the /proc/stat buffer size led ]
[ to this (hopefully) better approach to definitions ]

Reference(s):
commit 81f4a6acdf

Signed-off-by: Jim Warner <james.warner@comcast.net>
This commit is contained in:
Jim Warner 2020-06-29 00:00:00 -05:00 committed by Craig Small
parent c8864e8010
commit 70fd03e461
2 changed files with 6 additions and 4 deletions
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3
proc/meminfo.c
View File

@ -33,6 +33,7 @@
#define MEMINFO_FILE "/proc/meminfo" #define MEMINFO_FILE "/proc/meminfo"
#define MEMINFO_BUFF 8192
struct meminfo_data { struct meminfo_data {
@ -606,7 +607,7 @@ static int meminfo_read_failed (
/* a 'memory history reference' macro for readability, /* a 'memory history reference' macro for readability,
so we can focus the field names ... */ so we can focus the field names ... */
#define mHr(f) info->hist.new. f #define mHr(f) info->hist.new. f
char buf[8192]; char buf[MEMINFO_BUFF];
char *head, *tail; char *head, *tail;
int size; int size;
unsigned long *valptr; unsigned long *valptr;

3
proc/vmstat.c
View File

@ -39,6 +39,7 @@
#define VMSTAT_FILE "/proc/vmstat" #define VMSTAT_FILE "/proc/vmstat"
#define VMSTAT_BUFF 8192
/* /*
* Perhaps someday we'll all learn what is in these fields. But | * Perhaps someday we'll all learn what is in these fields. But |
@ -1067,7 +1068,7 @@ static int vmstat_make_hash_failed (
static int vmstat_read_failed ( static int vmstat_read_failed (
struct vmstat_info *info) struct vmstat_info *info)
{ {
char buf[8192]; char buf[VMSTAT_BUFF];
char *head, *tail; char *head, *tail;
int size; int size;
unsigned long *valptr; unsigned long *valptr;