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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 1998-2009. All Rights Reserved.
*
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
* compliance with the License. You should have received a copy of the
* Erlang Public License along with this software. If not, it can be
* retrieved online at http://www.erlang.org/.
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* %CopyrightEnd%
*/
/*
* This is a simple command that gives some interesting
* system information on NT.
* It is run as a port program by the nt test suite to find out priorities
* of programs etc.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if defined(VXWORKS)
int nt_info(int argc, char **argv){
printf("Hello lvsj!\n");
return 0;
}
#elif !defined(__WIN32__)
int main(int argc, char **argv){
printf("Hello lvsj!\n");
return 0;
}
#else /* Windows NT, here we go... */
#include <windows.h>
int erlang_format = 0;
#if 0
int last_error = 0;
void print_last_error(void){
char *mes;
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
NULL,
(last_error) ? last_error : GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR) &mes,
0,
NULL );
fprintf(stderr,"Error: %s",mes);
LocalFree(mes);
}
#endif
typedef BOOL (WINAPI *tEnumProcesses)(DWORD *, DWORD, DWORD *);
typedef BOOL (WINAPI *tEnumProcessModules)(HANDLE, HMODULE *, DWORD, DWORD *);
typedef DWORD (WINAPI *tGetModuleBaseName)(HANDLE, HMODULE, char *, DWORD);
static tGetModuleBaseName pGetModuleBaseName = NULL;
static tEnumProcessModules pEnumProcessModules = NULL;
static tEnumProcesses pEnumProcesses = NULL;
static BOOL init_fpointers(void){
HINSTANCE instance = LoadLibrary("PSAPI.DLL");
if(instance == NULL){
fprintf(stderr,"Failed to load PSAPI.DLL.\n");
return FALSE;
}
if((pEnumProcesses =
(tEnumProcesses) GetProcAddress(instance,"EnumProcesses")) ==
NULL){
fprintf(stderr,"Failed to find EnumProcesses in DLL.\n");
return FALSE;
}
if((pEnumProcessModules =
(tEnumProcessModules) GetProcAddress(instance,"EnumProcessModules")) ==
NULL){
fprintf(stderr,"Failed to find EnumProcessModules in DLL.\n");
return FALSE;
}
if((pGetModuleBaseName =
(tGetModuleBaseName) GetProcAddress(instance,"GetModuleBaseNameA")) ==
NULL){
fprintf(stderr,"Failed to find GetModuleBaseName in DLL.\n");
return FALSE;
}
return TRUE;
}
void one_line(DWORD pid){
char pname[MAX_PATH] = "???";
HMODULE hmod = NULL;
DWORD dummy;
DWORD priority = -1;
struct {
DWORD sym;
char *txt;
} tab[] = {
{HIGH_PRIORITY_CLASS,"high"},
{IDLE_PRIORITY_CLASS, "idle"},
{NORMAL_PRIORITY_CLASS,"normal"},
{REALTIME_PRIORITY_CLASS, "realtime"}
};
int tabsiz = sizeof(tab)/sizeof(*tab);
char *class = "???";
int i;
HANDLE hproc = OpenProcess(PROCESS_QUERY_INFORMATION |
PROCESS_VM_READ,
FALSE, pid );
if(!hproc)
goto print;
if(!(*pEnumProcessModules)(hproc,&hmod,sizeof(hmod),&dummy))
goto print;
if(!(*pGetModuleBaseName)(hproc,hmod,pname,sizeof(pname)))
goto print;
if(!(priority = GetPriorityClass(hproc)))
goto print;
for(i=0;i<tabsiz;++i)
if(tab[i].sym == priority)
class = tab[i].txt;
print:
if(erlang_format)
printf("{\"%s\", %lu, \"%s\"}%s", pname, pid, class,
(erlang_format > 1) ? "" : "\n");
else
printf("%-32s %8lu %-9s\n", pname, pid, class);
if(hproc)
CloseHandle(hproc);
if(hmod)
CloseHandle(hmod);
}
int do_simple_ps(void){
DWORD procs[1024];
DWORD num_procs;
DWORD needed;
int i;
if(!(*pEnumProcesses)(procs,sizeof(procs),&needed)){
fprintf(stderr,"Failed to EnumProcesses\n");
return 1;
}
num_procs = needed / sizeof(DWORD);
if(erlang_format > 1)
printf("[");
for(i=0;i<num_procs;++i){
one_line(procs[i]);
if(erlang_format > 1 && i < num_procs -1)
printf(", ");
}
if(erlang_format > 1)
printf("]. \n");
return 0;
}
int main(int argc, char **argv){
if(argc>1 && !strcmp(argv[1],"-e"))
erlang_format = 1;
else if(argc>1 && !strcmp(argv[1],"-E"))
erlang_format = 2;
if(!init_fpointers())
return 1;
return do_simple_ps();
}
#endif
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