mirror of https://github.com/nodejs/node.git
win: Duplicate platform_cygwin.cc into platform_win32.cc
Bert Belder
Ryan Dahl
parent
fa94d55f87
commit
5ea2a61596
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@ -0,0 +1,246 @@
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#include "node.h"
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#include "platform.h"
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#include <sys/param.h> // for MAXPATHLEN
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#include <unistd.h> // getpagesize
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#include <windows.h>
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namespace node {
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static char buf[MAXPATHLEN + 1];
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static char *process_title = NULL;
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// Does the about the same as perror(), but for windows api functions
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static void _winapi_perror(const char* prefix = NULL) {
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DWORD errno = GetLastError();
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char *errmsg;
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FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
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NULL, errno, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&errmsg, 0, NULL);
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// FormatMessage messages include a newline character
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if (prefix) {
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fprintf(stderr, "%s: %s", prefix, errmsg);
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} else {
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fputs(errmsg, stderr);
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}
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}
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char** OS::SetupArgs(int argc, char *argv[]) {
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return argv;
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}
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void OS::SetProcessTitle(char *title) {
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// We need to convert _title_ to UTF-16 first, because that's what windows uses internally.
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// It would be more efficient to use the UTF-16 value that we can obtain from v8,
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// but it's not accessible from here.
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// Max title length; according to the specs it should be 64K but in practice it's a little over 30000,
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// but who needs titles that long anyway?
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const int MAX_TITLE_LENGTH = 30001;
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int length;
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WCHAR *title_w;
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// Find out how big the buffer for the wide-char title must be
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length = MultiByteToWideChar(CP_UTF8, 0, title, -1, NULL, 0);
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if (!length) {
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_winapi_perror("MultiByteToWideChar");
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return;
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}
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// Convert to wide-char string
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title_w = new WCHAR[length];
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length = MultiByteToWideChar(CP_UTF8, 0, title, -1, title_w, length);
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if (!length) {
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_winapi_perror("MultiByteToWideChar");
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delete title_w;
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return;
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};
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// If the title must be truncated insert a \0 terminator there
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if (length > MAX_TITLE_LENGTH) {
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title_w[MAX_TITLE_LENGTH - 1] = *L"\0";
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}
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if (!SetConsoleTitleW(title_w)) {
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_winapi_perror("SetConsoleTitleW");
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}
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free(process_title);
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process_title = strdup(title);
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delete title_w;
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}
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static inline char* _getProcessTitle() {
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WCHAR *title_w;
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char *title;
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int length, length_w;
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length_w = GetConsoleTitleW(L"\0", sizeof(WCHAR));
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// If length is zero, there may be an error or the title may be empty
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if (!length_w) {
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if (GetLastError()) {
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_winapi_perror("GetConsoleTitleW");
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return NULL;
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}
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else {
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// The title is empty, so return empty string
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process_title = strdup("\0");
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return process_title;
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}
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}
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// Room for \0 terminator
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length_w++;
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title_w = new WCHAR[length_w];
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if (!GetConsoleTitleW(title_w, length_w * sizeof(WCHAR))) {
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_winapi_perror("GetConsoleTitleW");
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delete title_w;
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return NULL;
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}
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// Find out what the size of the buffer is that we need
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length = WideCharToMultiByte(CP_UTF8, 0, title_w, length_w, NULL, 0, NULL, NULL);
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if (!length) {
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_winapi_perror("WideCharToMultiByte");
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delete title_w;
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return NULL;
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}
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title = (char *) malloc(length);
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if (!title) {
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perror("malloc");
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delete title_w;
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return NULL;
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}
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// Do utf16 -> utf8 conversion here
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if (!WideCharToMultiByte(CP_UTF8, 0, title_w, -1, title, length, NULL, NULL)) {
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_winapi_perror("WideCharToMultiByte");
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delete title_w;
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free(title);
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return NULL;
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}
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delete title_w;
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return title;
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}
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const char* OS::GetProcessTitle(int *len) {
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// If the process_title was never read before nor explicitly set,
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// we must query it with getConsoleTitleW
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if (!process_title) {
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process_title = _getProcessTitle();
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}
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if (process_title) {
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*len = strlen(process_title);
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return process_title;
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} else {
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*len = 0;
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return NULL;
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}
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}
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int OS::GetMemory(size_t *rss, size_t *vsize) {
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FILE *f = fopen("/proc/self/stat", "r");
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if (!f) return -1;
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int itmp;
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char ctmp;
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size_t page_size = getpagesize();
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/* PID */
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if (fscanf(f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* Exec file */
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if (fscanf (f, "%s ", buf) == 0) goto error; /* coverity[secure_coding] */
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/* State */
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if (fscanf (f, "%c ", &ctmp) == 0) goto error; /* coverity[secure_coding] */
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/* Parent process */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* Process group */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* Session id */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* TTY */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* TTY owner process group */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* Flags */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* Minor faults (no memory page) */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* Minor faults, children */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* Major faults (memory page faults) */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* Major faults, children */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* utime */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* stime */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* utime, children */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* stime, children */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* jiffies remaining in current time slice */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* 'nice' value */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* jiffies until next timeout */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* jiffies until next SIGALRM */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* start time (jiffies since system boot) */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* Virtual memory size */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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*vsize = (size_t) itmp;
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/* Resident set size */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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*rss = (size_t) itmp * page_size;
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/* rlim */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* Start of text */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* End of text */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* Start of stack */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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fclose (f);
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return 0;
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error:
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fclose (f);
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return -1;
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}
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int OS::GetExecutablePath(char* buffer, size_t* size) {
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*size = readlink("/proc/self/exe", buffer, *size - 1);
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if (*size <= 0) return -1;
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buffer[*size] = '\0';
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return 0;
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}
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} // namespace node
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