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node/src/platform_linux.cc at master · greco/node · GitHub
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#
include
"
node.h
"
#
include
"
platform.h
"
#
include
<
sys/param.h
>
//
for MAXPATHLEN
#
include
<
unistd.h
>
//
getpagesize
/*
SetProcessTitle
*/
#
include
<
sys/prctl.h
>
#
include
<
linux/prctl.h
>
#
include
<
stdlib.h
>
//
free
#
include
<
string.h
>
//
strdup
namespace
node
{
static
char
buf[
MAXPATHLEN
+
1
];
static
char
*process_title;
char
**
OS::SetupArgs
(
int
argc,
char
*argv[]) {
process_title =
strdup
(argv[
0
]);
return
argv;
}
void
OS::SetProcessTitle
(
char
*title) {
if
(process_title)
free
(process_title);
process_title =
strdup
(title);
prctl
(
PR_SET_NAME
, process_title);
}
const
char
*
OS::GetProcessTitle
(
int
*len) {
if
(process_title) {
*len =
strlen
(process_title);
return
process_title;
}
*len =
0
;
return
NULL
;
}
int
OS::GetMemory
(
size_t
*rss,
size_t
*vsize) {
FILE
*f =
fopen
(
"
/proc/self/stat
"
,
"
r
"
);
if
(!f)
return
-
1
;
int
itmp;
char
ctmp;
size_t
page_size =
getpagesize
();
/*
PID
*/
if
(
fscanf
(f,
"
%d
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
Exec file
*/
if
(
fscanf
(f,
"
%s
"
, buf) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
State
*/
if
(
fscanf
(f,
"
%c
"
, &ctmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
Parent process
*/
if
(
fscanf
(f,
"
%d
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
Process group
*/
if
(
fscanf
(f,
"
%d
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
Session id
*/
if
(
fscanf
(f,
"
%d
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
TTY
*/
if
(
fscanf
(f,
"
%d
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
TTY owner process group
*/
if
(
fscanf
(f,
"
%d
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
Flags
*/
if
(
fscanf
(f,
"
%u
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
Minor faults (no memory page)
*/
if
(
fscanf
(f,
"
%u
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
Minor faults, children
*/
if
(
fscanf
(f,
"
%u
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
Major faults (memory page faults)
*/
if
(
fscanf
(f,
"
%u
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
Major faults, children
*/
if
(
fscanf
(f,
"
%u
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
utime
*/
if
(
fscanf
(f,
"
%d
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
stime
*/
if
(
fscanf
(f,
"
%d
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
utime, children
*/
if
(
fscanf
(f,
"
%d
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
stime, children
*/
if
(
fscanf
(f,
"
%d
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
jiffies remaining in current time slice
*/
if
(
fscanf
(f,
"
%d
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
'nice' value
*/
if
(
fscanf
(f,
"
%d
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
jiffies until next timeout
*/
if
(
fscanf
(f,
"
%u
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
jiffies until next SIGALRM
*/
if
(
fscanf
(f,
"
%u
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
start time (jiffies since system boot)
*/
if
(
fscanf
(f,
"
%d
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
Virtual memory size
*/
if
(
fscanf
(f,
"
%u
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
*vsize = (
size_t
) itmp;
/*
Resident set size
*/
if
(
fscanf
(f,
"
%u
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
*rss = (
size_t
) itmp * page_size;
/*
rlim
*/
if
(
fscanf
(f,
"
%u
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
Start of text
*/
if
(
fscanf
(f,
"
%u
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
End of text
*/
if
(
fscanf
(f,
"
%u
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
/*
Start of stack
*/
if
(
fscanf
(f,
"
%u
"
, &itmp) ==
0
)
goto
error;
/*
coverity[secure_coding]
*/
fclose
(f);
return
0
;
error:
fclose
(f);
return
-
1
;
}
int
OS::GetExecutablePath
(
char
* buffer,
size_t
* size) {
*size =
readlink
(
"
/proc/self/exe
"
, buffer, *size -
1
);
if
(*size <=
0
)
return
-
1
;
buffer[*size] =
'
\0
'
;
return
0
;
}
}
//
namespace node
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