sigar/bindings/lua/sigar-proc.c

247 lines
6.3 KiB
C

/**
* Copyright (c) 2009, Sun Microsystems Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of Sun Microsystems Inc. nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <lua.h>
#include <lauxlib.h>
#include <lualib.h>
#include <string.h>
#include "sigar.h"
#include "lua-sigar.h"
typedef struct {
sigar_proc_list_t procs;
sigar_t *sigar;
} lua_sigar_procs_t;
static int lua_sigar_procs_gc(lua_State *L) {
lua_sigar_procs_t *procs = (lua_sigar_procs_t *)luaL_checkudata(L, 1, "sigar_procs");
sigar_proc_list_destroy(procs->sigar, &(procs->procs));
return 0;
}
static int lua_sigar_procs_len(lua_State *L) {
lua_sigar_procs_t *procs = (lua_sigar_procs_t *)luaL_checkudata(L, 1, "sigar_procs");
lua_pushinteger(L, procs->procs.number);
return 1;
}
static int lua_sigar_procs_get_pid(lua_State *L) {
lua_sigar_procs_t *procs = (lua_sigar_procs_t *)luaL_checkudata(L, 1, "sigar_procs");
int ndx = luaL_checkint(L, 2);
if (ndx - 1 < 0 ||
ndx - 1 >= procs->procs.number) {
luaL_error(L, ".procs[%d] out of range: 1..%d", ndx, procs->procs.number);
}
lua_pushinteger(L, procs->procs.data[ndx - 1]);
return 1;
}
int lua_sigar_procs_get(lua_State *L) {
sigar_t *s = *(sigar_t **)luaL_checkudata(L, 1, "sigar");
lua_sigar_procs_t *procs;
procs = lua_newuserdata(L, sizeof(lua_sigar_procs_t));
procs->sigar = s;
sigar_proc_list_get(s, &(procs->procs));
if (0 != luaL_newmetatable(L, "sigar_procs")) {
lua_pushcfunction(L, lua_sigar_procs_len);
lua_setfield(L, -2, "__len");
lua_pushcfunction(L, lua_sigar_procs_get_pid);
lua_setfield(L, -2, "__index");
lua_pushcfunction(L, lua_sigar_procs_gc);
lua_setfield(L, -2, "__gc");
}
lua_setmetatable(L, -2);
return 1;
}
typedef struct {
sigar_pid_t pid;
sigar_t *sigar;
} lua_sigar_proc_t;
static int lua_sigar_proc_gc(lua_State *L) {
lua_sigar_proc_t *proc = (lua_sigar_proc_t *)luaL_checkudata(L, 1, "sigar_proc");
return 0;
}
static int lua_sigar_proc_get_mem(lua_State *L) {
lua_sigar_proc_t *proc = (lua_sigar_proc_t *)luaL_checkudata(L, 1, "sigar_proc");
sigar_proc_mem_t mem;
int err;
if (SIGAR_OK != (err = sigar_proc_mem_get(proc->sigar, proc->pid, &mem))) {
lua_pushnil(L);
lua_pushstring(L, strerror(err));
return 2;
}
lua_newtable(L);
#define DATA \
(&(mem))
LUA_EXPORT_INT(DATA, size);
LUA_EXPORT_INT(DATA, resident);
LUA_EXPORT_INT(DATA, share);
LUA_EXPORT_INT(DATA, major_faults);
LUA_EXPORT_INT(DATA, minor_faults);
LUA_EXPORT_INT(DATA, page_faults);
#undef DATA
return 1;
}
static int lua_sigar_proc_get_time(lua_State *L) {
lua_sigar_proc_t *proc = (lua_sigar_proc_t *)luaL_checkudata(L, 1, "sigar_proc");
sigar_proc_time_t t;
int err;
if (SIGAR_OK != (err = sigar_proc_time_get(proc->sigar, proc->pid, &t))) {
lua_pushnil(L);
lua_pushstring(L, strerror(err));
return 2;
return 0;
}
lua_newtable(L);
#define DATA \
(&(t))
LUA_EXPORT_INT(DATA, start_time);
LUA_EXPORT_INT(DATA, user);
LUA_EXPORT_INT(DATA, sys);
LUA_EXPORT_INT(DATA, total);
#undef DATA
return 1;
}
static int lua_sigar_proc_get_state(lua_State *L) {
lua_sigar_proc_t *proc = (lua_sigar_proc_t *)luaL_checkudata(L, 1, "sigar_proc");
sigar_proc_state_t state;
int err;
if (SIGAR_OK != (err = sigar_proc_state_get(proc->sigar, proc->pid, &state))) {
lua_pushnil(L);
lua_pushstring(L, strerror(err));
return 2;
}
lua_newtable(L);
#define DATA \
(&(state))
LUA_EXPORT_STR(DATA, name);
LUA_EXPORT_INT(DATA, ppid);
LUA_EXPORT_INT(DATA, tty);
LUA_EXPORT_INT(DATA, priority);
LUA_EXPORT_INT(DATA, nice);
LUA_EXPORT_INT(DATA, processor);
LUA_EXPORT_INT(DATA, threads);
#undef DATA
return 1;
}
static int lua_sigar_proc_get_exe(lua_State *L) {
lua_sigar_proc_t *proc = (lua_sigar_proc_t *)luaL_checkudata(L, 1, "sigar_proc");
sigar_proc_exe_t t;
int err;
if (SIGAR_OK != (err = sigar_proc_exe_get(proc->sigar, proc->pid, &t))) {
lua_pushnil(L);
lua_pushstring(L, strerror(err));
return 2;
}
lua_newtable(L);
#define DATA \
(&(t))
LUA_EXPORT_STR(DATA, name);
LUA_EXPORT_STR(DATA, cwd);
LUA_EXPORT_STR(DATA, root);
#undef DATA
return 1;
}
int lua_sigar_proc_get(lua_State *L) {
sigar_t *s = *(sigar_t **)luaL_checkudata(L, 1, "sigar");
sigar_pid_t pid = luaL_checknumber(L, 2);
lua_sigar_proc_t *proc;
proc = lua_newuserdata(L, sizeof(lua_sigar_proc_t));
proc->sigar = s;
proc->pid = pid;
if (0 != luaL_newmetatable(L, "sigar_proc")) {
lua_newtable(L);
lua_pushcfunction(L, lua_sigar_proc_get_mem);
lua_setfield(L, -2, "mem");
lua_pushcfunction(L, lua_sigar_proc_get_time);
lua_setfield(L, -2, "time");
lua_pushcfunction(L, lua_sigar_proc_get_exe);
lua_setfield(L, -2, "exe");
lua_pushcfunction(L, lua_sigar_proc_get_state);
lua_setfield(L, -2, "state");
lua_setfield(L, -2, "__index");
lua_pushcfunction(L, lua_sigar_proc_gc);
lua_setfield(L, -2, "__gc");
}
lua_setmetatable(L, -2);
return 1;
}
int lua_sigar_pid_get(lua_State *L) {
sigar_t *s = *(sigar_t **)luaL_checkudata(L, 1, "sigar");
lua_pushnumber(L, sigar_pid_get(s));
return 1;
}