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231 lines (172 loc) · 4.93 KB
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#include <node.h>
#include <platform.h>
#include <v8.h>
#include <errno.h>
#include <stdlib.h>
#include <sys/param.h> // for MAXPATHLEN
#include <unistd.h> // getpagesize
#include <platform_win32.h>
#include <platform_win32_winsock.cc>
namespace node {
using namespace v8;
static char *process_title = NULL;
// Does the about the same as strerror(),
// but supports all windows errror messages
const char *winapi_strerror(const int errorno) {
char *errmsg = NULL;
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS, NULL, errorno,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&errmsg, 0, NULL);
if (errmsg) {
// Remove trailing newlines
for (int i = strlen(errmsg) - 1;
i >= 0 && (errmsg[i] == '\n' || errmsg[i] == '\r'); i--) {
errmsg[i] = '\0';
}
return errmsg;
} else {
// FormatMessage failed
return "Unknown error";
}
}
// Does the about the same as perror(), but for windows api functions
void winapi_perror(const char* prefix = NULL) {
DWORD errorno = GetLastError();
const char *errmsg = NULL;
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS, NULL, errorno,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&errmsg, 0, NULL);
if (!errmsg) {
errmsg = "Unknown error\n";
}
// 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;
}
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.
// Max title length; according to the specs it should be 64K but in practice it's a little over 30000,
// but who needs titles that long anyway?
const int MAX_TITLE_LENGTH = 30001;
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;
char *title;
int length, length_w;
length_w = GetConsoleTitleW((WCHAR*)L"\0", sizeof(WCHAR));
// If length is zero, there may be an error or the title may be empty
if (!length_w) {
if (GetLastError()) {
winapi_perror("GetConsoleTitleW");
return NULL;
}
else {
// The title is empty, so return empty string
process_title = strdup("\0");
return process_title;
}
}
// Room for \0 terminator
length_w++;
title_w = new WCHAR[length_w];
if (!GetConsoleTitleW(title_w, length_w * sizeof(WCHAR))) {
winapi_perror("GetConsoleTitleW");
delete title_w;
return NULL;
}
// Find out what the size of the buffer is that we need
length = WideCharToMultiByte(CP_UTF8, 0, title_w, length_w, NULL, 0, NULL, NULL);
if (!length) {
winapi_perror("WideCharToMultiByte");
delete title_w;
return NULL;
}
title = (char *) malloc(length);
if (!title) {
perror("malloc");
delete title_w;
return NULL;
}
// Do utf16 -> utf8 conversion here
if (!WideCharToMultiByte(CP_UTF8, 0, title_w, -1, title, length, NULL, NULL)) {
winapi_perror("WideCharToMultiByte");
delete title_w;
free(title);
return NULL;
}
delete title_w;
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) {
*rss = 0;
*vsize = 0;
return 0;
}
double Platform::GetFreeMemory() {
return -1;
}
double Platform::GetTotalMemory() {
return -1;
}
int Platform::GetExecutablePath(char* buffer, size_t* size) {
*size = 0;
return -1;
}
int Platform::GetCPUInfo(Local<Array> *cpus) {
return -1;
}
double Platform::GetUptime() {
return -1;
}
int Platform::GetLoadAvg(Local<Array> *loads) {
return -1;
}
} // namespace node