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NCBI C++ ToolKit: src/corelib/ncbi_os_unix.cpp Source File

45 #define NCBI_USE_ERRCODE_X Corelib_Unix 61 #if defined(NCBI_OS_SOLARIS) || \ 62 (defined(HAVE_GETPWUID) && !defined(NCBI_HAVE_GETPWUID_R)) 64 const struct

passwd* pwd = getpwuid(uid);

65 if

(pwd && pwd->pw_name) {

66

user.assign(pwd->pw_name);

69 #elif defined(NCBI_HAVE_GETPWUID_R) 72 char

x_buf[

sizeof

(*pwd) +

PWD_BUF

];

77

pwd = (

struct

passwd*)

buf

;

79 # if NCBI_HAVE_GETPWUID_R == 4 81

pwd = getpwuid_r(uid, pwd, (

char

*)(pwd + 1),

size

);

83 # elif NCBI_HAVE_GETPWUID_R == 5 85 int

x_errno = getpwuid_r(uid, pwd, (

char

*)(pwd + 1),

size

, &pwd);

92 # error "Unknown value of NCBI_HAVE_GETPWUID_R: 4 or 5 expected." 96 if

(pwd || errno != ERANGE) {

102 # ifdef _SC_GETPW_R_SIZE_MAX 103 long

sc = sysconf(_SC_GETPW_R_SIZE_MAX);

104

maxsize = sc > 0 ? (size_t) sc :

size

;

109 "getpwuid_r() parse buffer too small (" 111

string

(

size

< maxsize

116 if

(

size

< maxsize) {

118 buf

new char

[

sizeof

(*pwd) +

size

];

131 buf

new char

[

sizeof

(*pwd) +

size

];

134 if

(pwd && pwd->pw_name) {

135

user.assign(pwd->pw_name);

151 #if defined(NCBI_OS_SOLARIS) || \ 152 (defined(HAVE_GETPWUID) && !defined(NCBI_HAVE_GETPWUID_R)) 154 const struct

passwd* pwd = getpwnam(user.c_str());

155

uid = pwd ? pwd->pw_uid : (uid_t)(-1);

157 #elif defined(NCBI_HAVE_GETPWUID_R) 160 char

x_buf[

sizeof

(*pwd) +

PWD_BUF

];

165

pwd = (

struct

passwd*)

buf

;

167 # if NCBI_HAVE_GETPWUID_R == 4 169

pwd = getpwnam_r(user.c_str(), pwd, (

char

*)(pwd + 1),

size

);

171 # elif NCBI_HAVE_GETPWUID_R == 5 173 int

x_errno = getpwnam_r(user.c_str(),

174

pwd, (

char

*)(pwd + 1),

size

, &pwd);

181 # error "Unknown value of NCBI_HAVE_GETPWUID_R: 4 or 5 expected." 185 if

(pwd || errno != ERANGE) {

191 # ifdef _SC_GETPW_R_SIZE_MAX 192 long

sc = sysconf(_SC_GETPW_R_SIZE_MAX);

193

maxsize = sc > 0 ? (size_t) sc :

size

;

198 "getpwnam_r() parse buffer too small (" 200

string

(

size

< maxsize

205 if

(

size

< maxsize) {

207 buf

new char

[

sizeof

(*pwd) +

size

];

220 buf

new char

[

sizeof

(*pwd) +

size

];

223

uid = pwd ? pwd->pw_uid : (uid_t)(-1);

242 #if defined(NCBI_OS_SOLARIS) || \ 243 (defined(HAVE_GETPWUID) && !defined(NCBI_HAVE_GETPWUID_R)) 245 const struct

group* grp = getgrgid(gid);

246 if

(grp && grp->gr_name) {

247

group.assign(grp->gr_name);

250 #elif defined(NCBI_HAVE_GETPWUID_R) 253 char

x_buf[

sizeof

(*grp) +

GRP_BUF

];

258

grp = (

struct

group*)

buf

;

260 # if NCBI_HAVE_GETPWUID_R == 4 262

grp = getgrgid_r(gid, grp, (

char

*)(grp + 1),

size

);

264 # elif NCBI_HAVE_GETPWUID_R == 5 266 int

x_errno = getgrgid_r(gid, grp,(

char

*)(grp + 1),

size

, &grp);

273 # error "Unknown value of NCBI_HAVE_GETPWUID_R: 4 or 5 expected." 277 if

(grp || errno != ERANGE) {

283 # ifdef _SC_GETGR_R_SIZE_MAX 284 long

sc = sysconf(_SC_GETGR_R_SIZE_MAX);

285

maxsize = sc > 0 ? (size_t) sc :

size

;

290 "getgrgid_r() parse buffer too small (" 292

string

(

size

< maxsize

297 if

(

size

< maxsize) {

299 buf

new char

[

sizeof

(*grp) +

size

];

312 buf

new char

[

sizeof

(*grp) +

size

];

315 if

(grp && grp->gr_name) {

316

group.assign(grp->gr_name);

333 #if defined(NCBI_OS_SOLARIS) || \ 334 (defined(HAVE_GETPWUID) && !defined(NCBI_HAVE_GETPWUID_R)) 336 const struct

group* grp = getgrnam(group.c_str());

337

gid = grp ? grp->gr_gid : (gid_t)(-1);

339 #elif defined(NCBI_HAVE_GETPWUID_R) 342 char

x_buf[

sizeof

(*grp) +

GRP_BUF

];

347

grp = (

struct

group*)

buf

;

349 # if NCBI_HAVE_GETPWUID_R == 4 351

grp = getgrnam_r(group.c_str(), grp, (

char

*)(grp + 1),

size

);

353 # elif NCBI_HAVE_GETPWUID_R == 5 355 int

x_errno = getgrnam_r(group.c_str(),

356

grp, (

char

*)(grp + 1),

size

, &grp);

363 # error "Unknown value of NCBI_HAVE_GETPWUID_R: 4 or 5 expected." 367 if

(grp || errno != ERANGE) {

373 # ifdef _SC_GETGR_R_SIZE_MAX 374 long

sc = sysconf(_SC_GETGR_R_SIZE_MAX);

375

maxsize = sc > 0 ? (size_t) sc :

size

;

380 "getgrnam_r() parse buffer too small (" 382

string

(

size

< maxsize

387 if

(

size

< maxsize) {

389 buf

new char

[

sizeof

(*grp) +

size

];

402 buf

new char

[

sizeof

(*grp) +

size

];

405

gid = grp ? grp->gr_gid : (gid_t)(-1);

420 #if defined(NCBI_OS_LINUX) 422 #define PROCFS(pid, file) \ 423 "/proc/"

+ (!pid ? "self" : NStr::NumericToString(pid)) + "/" + file

427 size_t

s_ReadFile(

const string

& filename,

char

buf

size_t size

)

446 size_t

s_ParseStatusVmValue(

const char

* name,

char

buf

size_t min_value

= 0)

451 char

* pos = strstr(

buf

, name);

455 size_t n

= NStr::StringToNumeric<size_t>(pos+strlen(name)+1

flags

) * 1024;

466 n

= s_ReadFile(PROCFS(pid,

"statm"

buf

sizeof

(

buf

));

471 usage

.total *= page_size;

472 usage

.resident *= page_size;

473 usage

.shared *= page_size;

474 usage

.text *= page_size;

475 usage

.lib *= page_size;

481 n

= s_ReadFile(PROCFS(pid,

"status"

buf

sizeof

(

buf

));

484 char

* pos = strstr(

buf

"Vm"

);

488 usage

.total_peak = s_ParseStatusVmValue(

"VmPeak"

, pos,

usage

.total);

489 usage

.resident_peak = s_ParseStatusVmValue(

"VmHWM"

, pos,

usage

.resident);

490 usage

.data = s_ParseStatusVmValue(

"VmData"

, pos);

491 usage

.swap = s_ParseStatusVmValue(

"VmSwap"

, pos);

493 usage

.text = s_ParseStatusVmValue(

"VmExe"

, pos);

496 usage

.lib = s_ParseStatusVmValue(

"VmLib"

, pos);

498 if

usage

.stack) {

499 usage

.stack = s_ParseStatusVmValue(

"VmStk"

, pos);

506 int

CLinuxFeature::GetThreadCount(pid_t pid)

509 string

name = PROCFS(pid,

"task"

);

510

DIR* dir = opendir(name.c_str());

512 while

(readdir(dir) !=

NULL

) {

526 int

CLinuxFeature::GetFileDescriptorsCount(pid_t pid)

529 string

name = PROCFS(pid,

"fd"

);

530

DIR* dir = opendir(name.c_str());

532 while

(readdir(dir) !=

NULL

) {

546

CLinuxFeature::CProcStat::CProcStat(pid_t pid)

551 size_t n

= s_ReadFile(PROCFS(pid,

"stat"

buf

sizeof

(

buf

));

553

m_Storage.reserve(

);

554

m_Storage.assign(

buf

);

558 size_t

p1 = m_Storage.find(

'('

);

562

m_List.push_back(

CTempString

(m_Storage, 0, p1-1));

563 size_t

p2 = m_Storage.find(

')'

, p1+1);

567

m_List.push_back(

CTempString

(m_Storage, p1+1, p2-p1-1));

568 NStr::Split

(m_Storage.data() + p2 + 1,

" "

, m_List);

Class for support low level input/output for files.

static unsigned long GetVirtualMemoryPageSize(void)

Return virtual memory page size.

CTempString implements a light-weight string on top of a storage buffer whose lifetime management is ...

static string GetUserNameByUID(uid_t uid)

Look up user name by given numeric user ID.

static gid_t GetGroupGIDByName(const string &group)

Look up numeric group ID by symbolic group name.

static string GetGroupNameByGID(gid_t gid)

Look up group name by given numeric group ID.

static uid_t GetUserUIDByName(const string &user)

Look up numeric user ID by symbolic user name.

The NCBI C++ standard methods for dealing with std::string.

#define ERR_POST_ONCE(message)

Error posting only once during program execution.

void Critical(CExceptionArgs_Base &args)

void Error(CExceptionArgs_Base &args)

static void Set(ECode code)

Set last error using native error code enum.

@ eUnknown

Unknown error.

@ eRead

File can be read.

@ eOpen

Open an existing file, or create a new one.

#define END_NCBI_SCOPE

End previously defined NCBI scope.

#define BEGIN_NCBI_SCOPE

Define ncbi namespace.

#define NCBI_AS_STRING(value)

Convert some value to string even if this value is macro itself.

static list< string > & Split(const CTempString str, const CTempString delim, list< string > &arr, TSplitFlags flags=0, vector< SIZE_TYPE > *token_pos=NULL)

Split a string using specified delimiters.

int TStringToNumFlags

Bitwise OR of "EStringToNumFlags".

static enable_if< is_arithmetic< TNumeric >::value||is_convertible< TNumeric, Int8 >::value, string >::type NumericToString(TNumeric value, TNumToStringFlags flags=0, int base=10)

Convert numeric value to string.

@ fConvErr_NoThrow

Do not throw an exception on error.

@ fAllowTrailingSymbols

Ignore trailing non-numerics characters.

@ fAllowLeadingSpaces

Ignore leading whitespace characters in converted string.

Definition of all error codes used in corelib (xncbi.lib).

const struct ncbi::grid::netcache::search::fields::SIZE size

Private UNIX specific features.

bool GetMemoryUsage(size_t *total, size_t *resident, size_t *shared)

Defines classes: CDirEntry, CFile, CDir, CSymLink, CMemoryFile, CFileUtil, CFileLock,...

Process memory usage information, in bytes.

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Showing content from http://www.ncbi.nlm.nih.gov/IEB/ToolBox/CPP_DOC/doxyhtml/ncbi__os__unix_8cpp_source.html below:

NCBI C++ ToolKit: src/corelib/ncbi_os_unix.cpp Source File

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