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Tag: v0.5.3
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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
#include "node.h"
#include "platform.h"
#include <v8.h>
#include <sys/param.h> // for MAXPATHLEN
#include <sys/sysinfo.h>
#include <unistd.h> // getpagesize, sysconf
#include <stdio.h> // sscanf, snprintf
#include <string.h>
#include <windows.h>
namespace node {
using namespace v8;
static char buf[MAXPATHLEN + 1];
static char *process_title = NULL;
double Platform::prog_start_time = Platform::GetUptime();
// Does the about the same as perror(), but for windows api functions
static void _winapi_perror(const char* prefix = NULL) {
DWORD errorno = GetLastError();
char *errmsg;
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, errorno, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&errmsg, 0, NULL);
// FormatMessage messages include a newline character
if (prefix) {
fprintf(stderr, "%s: %s", prefix, errmsg);
} else {
fputs(errmsg, stderr);
}
}
char** Platform::SetupArgs(int argc, char *argv[]) {
return argv;
}
// Max title length; the only thing MSDN tells us about the maximum length
// of the console title is that it is smaller than 64K. However in practice
// it is much smaller, and there is no way to figure out what the exact length
// of the title is or can be, at least not on XP. To make it even more
// annoying, GetConsoleTitle failes when the buffer to be read into is bigger
// than the actual maximum length. So we make a conservative guess here;
// just don't put the novel you're writing in the title, unless the plot
// survives truncation.
#define MAX_TITLE_LENGTH 8192
void Platform::SetProcessTitle(char *title) {
// We need to convert _title_ to UTF-16 first, because that's what windows uses internally.
// It would be more efficient to use the UTF-16 value that we can obtain from v8,
// but it's not accessible from here.
int length;
WCHAR *title_w;
// Find out how big the buffer for the wide-char title must be
length = MultiByteToWideChar(CP_UTF8, 0, title, -1, NULL, 0);
if (!length) {
_winapi_perror("MultiByteToWideChar");
return;
}
// Convert to wide-char string
title_w = new WCHAR[length];
length = MultiByteToWideChar(CP_UTF8, 0, title, -1, title_w, length);
if (!length) {
_winapi_perror("MultiByteToWideChar");
delete title_w;
return;
};
// If the title must be truncated insert a \0 terminator there
if (length > MAX_TITLE_LENGTH) {
title_w[MAX_TITLE_LENGTH - 1] = *L"\0";
}
if (!SetConsoleTitleW(title_w)) {
_winapi_perror("SetConsoleTitleW");
}
free(process_title);
process_title = strdup(title);
delete title_w;
}
static inline char* _getProcessTitle() {
WCHAR title_w[MAX_TITLE_LENGTH];
char *title;
int result, length;
result = GetConsoleTitleW(title_w, sizeof(title_w) / sizeof(WCHAR));
if (result == 0) {
_winapi_perror("GetConsoleTitleW");
return NULL;
}
// Find out what the size of the buffer is that we need
length = WideCharToMultiByte(CP_UTF8, 0, title_w, -1, NULL, 0, NULL, NULL);
if (!length) {
_winapi_perror("WideCharToMultiByte");
return NULL;
}
title = (char *) malloc(length);
if (!title) {
perror("malloc");
return NULL;
}
// Do utf16 -> utf8 conversion here
if (!WideCharToMultiByte(CP_UTF8, 0, title_w, -1, title, length, NULL, NULL)) {
_winapi_perror("WideCharToMultiByte");
free(title);
return NULL;
}
return title;
}
const char* Platform::GetProcessTitle(int *len) {
// If the process_title was never read before nor explicitly set,
// we must query it with getConsoleTitleW
if (!process_title) {
process_title = _getProcessTitle();
}
if (process_title) {
*len = strlen(process_title);
return process_title;
} else {
*len = 0;
return NULL;
}
}
int Platform::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 Platform::GetCPUInfo(Local<Array> *cpus) {
HandleScope scope;
Local<Object> cpuinfo;
Local<Object> cputimes;
unsigned int ticks = (unsigned int)sysconf(_SC_CLK_TCK),
multiplier = ((uint64_t)1000L / ticks), cpuspeed;
int numcpus = 0, i = 0;
unsigned long long ticks_user, ticks_sys, ticks_idle, ticks_nice, ticks_intr;
char line[512], speedPath[256], model[512];
FILE *fpStat = fopen("/proc/stat", "r");
FILE *fpModel = fopen("/proc/cpuinfo", "r");
FILE *fpSpeed;
if (fpModel) {
while (fgets(line, 511, fpModel) != NULL) {
if (strncmp(line, "model name", 10) == 0) {
numcpus++;
if (numcpus == 1) {
char *p = strchr(line, ':') + 2;
strcpy(model, p);
model[strlen(model)-1] = 0;
}
} else if (strncmp(line, "cpu MHz", 7) == 0) {
if (numcpus == 1) {
sscanf(line, "%*s %*s : %u", &cpuspeed);
}
}
}
fclose(fpModel);
}
*cpus = Array::New(numcpus);
if (fpStat) {
while (fgets(line, 511, fpStat) != NULL) {
if (strncmp(line, "cpu ", 4) == 0) {
continue;
} else if (strncmp(line, "cpu", 3) != 0) {
break;
}
sscanf(line, "%*s %llu %llu %llu %llu",
&ticks_user, &ticks_nice, &ticks_sys, &ticks_idle);
snprintf(speedPath, sizeof(speedPath),
"/sys/devices/system/cpu/cpu%u/cpufreq/cpuinfo_max_freq", i);
fpSpeed = fopen(speedPath, "r");
if (fpSpeed) {
if (fgets(line, 511, fpSpeed) != NULL) {
sscanf(line, "%u", &cpuspeed);
cpuspeed /= 1000;
}
fclose(fpSpeed);
}
cpuinfo = Object::New();
cputimes = Object::New();
cputimes->Set(String::New("user"), Number::New(ticks_user * multiplier));
cputimes->Set(String::New("nice"), Number::New(ticks_nice * multiplier));
cputimes->Set(String::New("sys"), Number::New(ticks_sys * multiplier));
cputimes->Set(String::New("idle"), Number::New(ticks_idle * multiplier));
cputimes->Set(String::New("irq"), Number::New(0));
cpuinfo->Set(String::New("model"), String::New(model));
cpuinfo->Set(String::New("speed"), Number::New(cpuspeed));
cpuinfo->Set(String::New("times"), cputimes);
(*cpus)->Set(i++, cpuinfo);
}
fclose(fpStat);
}
return 0;
}
double Platform::GetFreeMemory() {
double pagesize = static_cast<double>(sysconf(_SC_PAGESIZE));
double pages = static_cast<double>(sysconf(_SC_AVPHYS_PAGES));
return static_cast<double>(pages * pagesize);
}
double Platform::GetTotalMemory() {
double pagesize = static_cast<double>(sysconf(_SC_PAGESIZE));
double pages = static_cast<double>(sysconf(_SC_PHYS_PAGES));
return pages * pagesize;
}
double Platform::GetUptimeImpl() {
double amount;
char line[512];
FILE *fpUptime = fopen("/proc/uptime", "r");
if (fpUptime) {
if (fgets(line, 511, fpUptime) != NULL) {
sscanf(line, "%lf %*lf", &amount);
}
fclose(fpUptime);
}
return amount;
}
int Platform::GetLoadAvg(Local<Array> *loads) {
// Unsupported as of cygwin 1.7.7
return -1;
}
Handle<Value> Platform::GetInterfaceAddresses() {
HandleScope scope;
return scope.Close(Object::New());
}
} // namespace node
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