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Viewing changes to rame/src/applet-rame.c

  • Committer: Bazaar Package Importer
  • Author(s): Didier Roche
  • Date: 2009-08-26 21:07:39 UTC
  • Revision ID: james.westby@ubuntu.com-20090826210739-gyjuuqezrzuluao4
Tags: upstream-2.0.8.1
Import upstream version 2.0.8.1

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rame/src/applet-rame.c
 
1
/**
 
2
* This file is a part of the Cairo-Dock project
 
3
*
 
4
* Copyright : (C) see the 'copyright' file.
 
5
* E-mail    : see the 'copyright' file.
 
6
*
 
7
* This program is free software; you can redistribute it and/or
 
8
* modify it under the terms of the GNU General Public License
 
9
* as published by the Free Software Foundation; either version 3
 
10
* of the License, or (at your option) any later version.
 
11
*
 
12
* This program is distributed in the hope that it will be useful,
 
13
* but WITHOUT ANY WARRANTY; without even the implied warranty of
 
14
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
15
* GNU General Public License for more details.
 
16
* You should have received a copy of the GNU General Public License
 
17
* along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
18
*/
 
19
 
 
20
#include <stdlib.h>
 
21
#include <stdio.h>
 
22
#include <string.h>
 
23
#include <math.h>
 
24
#include <glib/gi18n.h>
 
25
#include <glib/gprintf.h>
 
26
 
 
27
#include <fcntl.h>
 
28
#include <unistd.h>
 
29
#include <unistd.h>
 
30
 
 
31
#include "applet-struct.h"
 
32
#include "applet-notifications.h"
 
33
#include "applet-rame.h"
 
34
#include "cairo-dock.h"
 
35
 
 
36
 
 
37
#define RAME_DATA_PIPE "/proc/meminfo"
 
38
#define CD_RAME_PROC_FS "/proc"
 
39
 
 
40
#define goto_next_line \
 
41
        str = strchr (str, '\n'); \
 
42
        if (str == NULL) { \
 
43
                myData.bAcquisitionOK = FALSE; \
 
44
                return; \
 
45
        } \
 
46
        str ++;
 
47
#define get_value(iValue) \
 
48
        str = strchr (str, ':'); \
 
49
        if (str == NULL) { \
 
50
                myData.bAcquisitionOK = FALSE; \
 
51
                g_free (cContent); \
 
52
                return; \
 
53
        } \
 
54
        str ++; \
 
55
        while (*str == ' ') \
 
56
                str ++; \
 
57
        iValue = atoll (str);
 
58
void cd_rame_read_data (CairoDockModuleInstance *myApplet)
 
59
{
 
60
        gchar *cContent = NULL;
 
61
        gsize length=0;
 
62
        GError *erreur = NULL;
 
63
        g_file_get_contents (RAME_DATA_PIPE, &cContent, &length, &erreur);
 
64
        if (erreur != NULL)
 
65
        {
 
66
                cd_warning("ram : %s", erreur->message);
 
67
                g_error_free(erreur);
 
68
                erreur = NULL;
 
69
                myData.bAcquisitionOK = FALSE;
 
70
        }
 
71
        else
 
72
        {
 
73
                int iNumLine = 1;
 
74
                gchar *str = cContent;
 
75
                
 
76
                get_value (myData.ramTotal)  // MemTotal
 
77
                cd_debug ("ramTotal : %lld", myData.ramTotal);
 
78
                
 
79
                goto_next_line
 
80
                get_value (myData.ramFree)  // MemFree
 
81
                cd_debug ("ramFree : %lld", myData.ramFree);
 
82
                
 
83
                myData.ramUsed = myData.ramTotal - myData.ramFree;
 
84
                goto_next_line
 
85
                get_value (myData.ramBuffers)  // Buffers.
 
86
                
 
87
                goto_next_line
 
88
                get_value (myData.ramCached)  // Cached.
 
89
                cd_debug ("ramCached : %lld", myData.ramCached);
 
90
                
 
91
                goto_next_line  // SwapCached:
 
92
                goto_next_line  // Active:
 
93
                goto_next_line  // Inactive:
 
94
                goto_next_line  // HighTotal:
 
95
                goto_next_line  // HighFree:
 
96
                goto_next_line  // LowTotal:
 
97
                goto_next_line  // LowFree:
 
98
                
 
99
                while (strncmp (str, "SwapTotal", 9) != 0)
 
100
                {
 
101
                        goto_next_line
 
102
                }
 
103
                get_value (myData.swapTotal)  // SwapTotal.
 
104
                cd_debug ("swapTotal : %lld", myData.swapTotal);
 
105
                goto_next_line
 
106
                get_value (myData.swapFree)  // SwapFree.
 
107
                cd_debug ("swapFree : %lld", myData.swapFree);
 
108
                
 
109
                myData.swapUsed = myData.swapTotal - myData.swapFree;
 
110
                
 
111
                g_free (cContent);
 
112
                myData.bAcquisitionOK = TRUE;
 
113
                if (! myData.bInitialized)
 
114
                        myData.bInitialized = TRUE;
 
115
        }
 
116
}
 
117
 
 
118
gboolean cd_rame_update_from_data (CairoDockModuleInstance *myApplet)
 
119
{
 
120
        if ( ! myData.bAcquisitionOK)
 
121
        {
 
122
                if (myConfig.iInfoDisplay == CAIRO_DOCK_INFO_ON_LABEL)
 
123
                        CD_APPLET_SET_NAME_FOR_MY_ICON (myConfig.defaultTitle);
 
124
                else if (myConfig.iInfoDisplay == CAIRO_DOCK_INFO_ON_ICON)
 
125
                        CD_APPLET_SET_QUICK_INFO_ON_MY_ICON ("N/A");
 
126
                if (myData.pGauge)
 
127
                {
 
128
                        CD_APPLET_RENDER_GAUGE (myData.pGauge, 0.);
 
129
                }
 
130
                else
 
131
                {
 
132
                        CD_APPLET_RENDER_GRAPH (myData.pGraph);
 
133
                }
 
134
        }
 
135
        else
 
136
        {
 
137
                if (! myData.bInitialized)
 
138
                {
 
139
                        if (myConfig.iInfoDisplay == CAIRO_DOCK_INFO_ON_ICON)
 
140
                                CD_APPLET_SET_QUICK_INFO_ON_MY_ICON (myDock ? "..." : D_("Loading"));
 
141
                        if (myData.pGauge)
 
142
                        {
 
143
                                CD_APPLET_RENDER_GAUGE (myData.pGauge, 0.);
 
144
                        }
 
145
                        else
 
146
                        {
 
147
                                CD_APPLET_RENDER_GRAPH (myData.pGraph);
 
148
                        }
 
149
                }
 
150
                else
 
151
                {
 
152
                        //double fRamPercent = 100. * (myData.ramUsed - myData.ramCached) / myData.ramTotal;
 
153
                        //double fSwapPercent = 100. * myData.swapUsed / myData.swapTotal;
 
154
                        double fRamPercent = 100. * (myConfig.bShowFreeMemory ? myData.ramFree + myData.ramCached + myData.ramBuffers : myData.ramUsed - myData.ramCached - myData.ramBuffers) / myData.ramTotal;
 
155
                        double fSwapPercent = (myData.swapTotal ? 100. * (myConfig.bShowFreeMemory ? myData.swapFree : myData.swapUsed) / myData.swapTotal : 0.);
 
156
                        cd_debug ("fRamPercent : %.2f %% ; fSwapPercent : %.2f %%", fRamPercent, fSwapPercent);
 
157
                        gboolean bRamNeedsUpdate = (fabs (myData.fPrevRamPercent - fRamPercent) > .1);
 
158
                        gboolean bSwapNeedsUpdate = (myConfig.bShowSwap && fabs (myData.fPrevSwapPercent - fSwapPercent) > .1);
 
159
                        if (myConfig.iInfoDisplay != CAIRO_DOCK_INFO_NONE && (bRamNeedsUpdate || bSwapNeedsUpdate))
 
160
                        {
 
161
                                GString *sInfo = g_string_new ("");
 
162
                                if (myConfig.iInfoDisplay == CAIRO_DOCK_INFO_ON_LABEL || myDesklet)
 
163
                                        g_string_assign (sInfo, "RAM : ");
 
164
                                
 
165
                                g_string_append_printf (sInfo, (fRamPercent < 10 ? "%.1f%%" : "%.0f%%"), fRamPercent);
 
166
                                if (myConfig.bShowSwap)
 
167
                                {
 
168
                                        g_string_append_c (sInfo, '\n');
 
169
                                        if (myConfig.iInfoDisplay == CAIRO_DOCK_INFO_ON_LABEL || myDesklet)
 
170
                                                g_string_append_printf (sInfo, "SWAP: ");
 
171
                                        g_string_append_printf (sInfo, (fSwapPercent < 10 ? "%.1f%%" : "%.0f%%"), fSwapPercent);
 
172
                                }
 
173
                                
 
174
                                if (myConfig.iInfoDisplay == CAIRO_DOCK_INFO_ON_ICON)
 
175
                                {
 
176
                                        CD_APPLET_SET_QUICK_INFO_ON_MY_ICON (sInfo->str);
 
177
                                }
 
178
                                else
 
179
                                {
 
180
                                        CD_APPLET_SET_NAME_FOR_MY_ICON (sInfo->str);
 
181
                                }
 
182
                                g_string_free (sInfo, TRUE);
 
183
                        }
 
184
                        
 
185
                        if (! myConfig.bShowSwap)
 
186
                        {
 
187
                                if (myData.pGauge && bRamNeedsUpdate)
 
188
                                {
 
189
                                        CD_APPLET_RENDER_GAUGE (myData.pGauge, fRamPercent / 100);
 
190
                                }
 
191
                                else if (myData.pGraph)
 
192
                                {
 
193
                                        CD_APPLET_RENDER_GRAPH_NEW_VALUE (myData.pGraph, fRamPercent / 100);
 
194
                                }
 
195
                        }
 
196
                        else
 
197
                        {
 
198
                                if (myData.pGauge && (bRamNeedsUpdate || bSwapNeedsUpdate))
 
199
                                {
 
200
                                        GList *pList = NULL;  /// un tableau ca serait plus sympa ...
 
201
                                        double *pValue = g_new (double, 1);
 
202
                                        *pValue = (double) fRamPercent / 100;
 
203
                                        pList = g_list_append (pList, pValue);
 
204
                                        pValue = g_new (double, 1);
 
205
                                        *pValue = (double) fSwapPercent / 100;
 
206
                                        pList = g_list_append (pList, pValue);
 
207
                                        CD_APPLET_RENDER_GAUGE_MULTI_VALUE (myData.pGauge, pList);
 
208
                                        g_list_foreach (pList, (GFunc) g_free, NULL);
 
209
                                        g_list_free (pList);
 
210
                                }
 
211
                                else if (myData.pGraph)
 
212
                                {
 
213
                                        CD_APPLET_RENDER_GRAPH_NEW_VALUES (myData.pGraph, fRamPercent / 100, fSwapPercent / 100);
 
214
                                }
 
215
                        }
 
216
                        
 
217
                        if (bRamNeedsUpdate)
 
218
                                myData.fPrevRamPercent = fRamPercent;
 
219
                        if (bSwapNeedsUpdate)
 
220
                                myData.fPrevSwapPercent = fSwapPercent;
 
221
                }
 
222
        }
 
223
        return myData.bAcquisitionOK;
 
224
}
 
225
 
 
226
 
 
227
 
 
228
#define jump_to_next_value(tmp) \
 
229
        while (*tmp != ' ' && *tmp != '\0') \
 
230
                tmp ++; \
 
231
        if (*tmp == '\0') { \
 
232
                cd_warning ("problem when reading pipe"); \
 
233
                break ; \
 
234
        } \
 
235
        while (*tmp == ' ') \
 
236
                tmp ++; \
 
237
 
 
238
void cd_rame_free_process (CDProcess *pProcess)
 
239
{
 
240
        if (pProcess == NULL)
 
241
                return ;
 
242
        g_free (pProcess->cName);
 
243
        g_free (pProcess);
 
244
}
 
245
 
 
246
 
 
247
void cd_rame_get_process_memory (void)
 
248
{
 
249
        static gchar cFilePathBuffer[20+1];  // /proc/12345/stat
 
250
        static gchar cContent[512+1];
 
251
        
 
252
        cd_debug ("");
 
253
        GError *erreur = NULL;
 
254
        GDir *dir = g_dir_open (CD_RAME_PROC_FS, 0, &erreur);
 
255
        if (erreur != NULL)
 
256
        {
 
257
                cd_warning ("Attention : %s", erreur->message);
 
258
                g_error_free (erreur);
 
259
                return ;
 
260
        }
 
261
        
 
262
        if (myData.pTopList == NULL)
 
263
        {
 
264
                myData.pTopList = g_new0 (CDProcess *, myConfig.iNbDisplayedProcesses);
 
265
                myData.iNbDisplayedProcesses = myConfig.iNbDisplayedProcesses;
 
266
        }
 
267
        if (myData.pPreviousTopList == NULL)
 
268
                myData.pPreviousTopList = g_new0 (CDProcess *, myConfig.iNbDisplayedProcesses);
 
269
        if (myData.iMemPageSize == 0)
 
270
                myData.iMemPageSize = sysconf(_SC_PAGESIZE);
 
271
        
 
272
        int i;
 
273
        for (i = 0; i < myConfig.iNbDisplayedProcesses; i ++)
 
274
                cd_rame_free_process (myData.pPreviousTopList[i]);
 
275
        memcpy (myData.pPreviousTopList, myData.pTopList, myConfig.iNbDisplayedProcesses * sizeof (CDProcess *));
 
276
        memset (myData.pTopList, 0, myConfig.iNbDisplayedProcesses * sizeof (CDProcess *));
 
277
        
 
278
        const gchar *cPid;
 
279
        gchar *tmp, *cName;
 
280
        CDProcess *pProcess;
 
281
        unsigned long long iVmSize, iVmRSS, iTotalMemory;  // Quantité de mémoire totale utilisée / (Virtual Memory Resident Stack Size) Taille de la pile en mémoire.
 
282
        int j;
 
283
        while ((cPid = g_dir_read_name (dir)) != NULL)
 
284
        {
 
285
                if (! g_ascii_isdigit (*cPid))
 
286
                        continue;
 
287
                
 
288
                snprintf (cFilePathBuffer, 20, "/proc/%s/stat", cPid);
 
289
                int pipe = open (cFilePathBuffer, O_RDONLY);
 
290
                int iPid = atoi (cPid);
 
291
                if (pipe <= 0)  // pas de pot le process s'est termine depuis qu'on a ouvert le repertoire.
 
292
                {
 
293
                        continue ;
 
294
                }
 
295
                
 
296
                if (read (pipe, cContent, sizeof (cContent)) <= 0)
 
297
                {
 
298
                        cd_warning ("can't read %s", cFilePathBuffer);
 
299
                        close (pipe);
 
300
                        continue;
 
301
                }
 
302
                close (pipe);
 
303
                
 
304
                pProcess = g_new0 (CDProcess, 1);
 
305
                pProcess->iPid = iPid;
 
306
                
 
307
                tmp = cContent;
 
308
                jump_to_next_value (tmp);  // on saute le pid.
 
309
                        
 
310
                cName = tmp + 1;  // on saute la '('.
 
311
                gchar *str = cName;
 
312
                while (*str != ')' && *str != '\0')
 
313
                        str ++;
 
314
                
 
315
                jump_to_next_value (tmp);  // on saute le nom.
 
316
                jump_to_next_value (tmp);  // on saute l'etat.
 
317
                jump_to_next_value (tmp);
 
318
                jump_to_next_value (tmp);
 
319
                jump_to_next_value (tmp);
 
320
                jump_to_next_value (tmp);
 
321
                jump_to_next_value (tmp);
 
322
                jump_to_next_value (tmp);
 
323
                jump_to_next_value (tmp);
 
324
                jump_to_next_value (tmp);
 
325
                jump_to_next_value (tmp);
 
326
                jump_to_next_value (tmp);
 
327
                jump_to_next_value (tmp);  // on saute le temps user.
 
328
                jump_to_next_value (tmp);  // on saute le temps system.
 
329
                jump_to_next_value (tmp);
 
330
                jump_to_next_value (tmp);
 
331
                jump_to_next_value (tmp);
 
332
                jump_to_next_value (tmp);  // on saute le nice.
 
333
                jump_to_next_value (tmp);
 
334
                jump_to_next_value (tmp);
 
335
                jump_to_next_value (tmp);
 
336
                iVmSize = atoll (tmp);
 
337
                jump_to_next_value (tmp);
 
338
                iVmRSS = atoll (tmp);
 
339
                
 
340
                iTotalMemory = iVmRSS * myData.iMemPageSize;
 
341
                if (iTotalMemory > 0)
 
342
                {
 
343
                        i = myConfig.iNbDisplayedProcesses - 1;
 
344
                        while (i >= 0 && (myData.pTopList[i] == NULL || iTotalMemory > myData.pTopList[i]->iMemAmount))
 
345
                                i --;
 
346
                        if (i != myConfig.iNbDisplayedProcesses - 1)
 
347
                        {
 
348
                                i ++;
 
349
                                for (j = myConfig.iNbDisplayedProcesses - 2; j >= i; j --)
 
350
                                        myData.pTopList[j+1] = myData.pTopList[j];
 
351
                                
 
352
                                pProcess = g_new0 (CDProcess, 1);
 
353
                                pProcess->iPid = iPid;
 
354
                                pProcess->cName = g_strndup (cName, str - cName);
 
355
                                pProcess->iMemAmount = iTotalMemory;
 
356
                                myData.pTopList[i] = pProcess;
 
357
                        }
 
358
                }
 
359
        }
 
360
        
 
361
        g_dir_close (dir);
 
362
}
 
363
 
 
364
void cd_rame_clean_all_processes (void)
 
365
{
 
366
        int i;
 
367
        for (i = 0; i < myData.iNbDisplayedProcesses; i ++)
 
368
        {
 
369
                cd_rame_free_process (myData.pTopList[i]);
 
370
                cd_rame_free_process (myData.pPreviousTopList[i]);
 
371
        }
 
372
        memset (myData.pTopList, 0, myData.iNbDisplayedProcesses * sizeof (CDProcess *));
 
373
        memset (myData.pPreviousTopList, 0, myData.iNbDisplayedProcesses * sizeof (CDProcess *));
 
374
}