aboutsummaryrefslogtreecommitdiffstats
path: root/Process.h
blob: 1ba36de32604f30598533461e6fa7e2b821d4153 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
#ifndef HEADER_Process
#define HEADER_Process
/*
htop - Process.h
(C) 2004-2015 Hisham H. Muhammad
(C) 2020 Red Hat, Inc.  All Rights Reserved.
Released under the GNU GPLv2, see the COPYING file
in the source distribution for its full text.
*/

#include <stdbool.h>
#include <stdint.h>
#include <sys/types.h>

#include "Object.h"
#include "ProcessField.h"
#include "RichString.h"


#define PROCESS_FLAG_IO              0x00000001
#define PROCESS_FLAG_CWD             0x00000002

#define DEFAULT_HIGHLIGHT_SECS 5

typedef enum ProcessField_ {
   NULL_PROCESSFIELD = 0,
   PID = 1,
   COMM = 2,
   STATE = 3,
   PPID = 4,
   PGRP = 5,
   SESSION = 6,
   TTY = 7,
   TPGID = 8,
   MINFLT = 10,
   MAJFLT = 12,
   PRIORITY = 18,
   NICE = 19,
   STARTTIME = 21,
   PROCESSOR = 38,
   M_VIRT = 39,
   M_RESIDENT = 40,
   ST_UID = 46,
   PERCENT_CPU = 47,
   PERCENT_MEM = 48,
   USER = 49,
   TIME = 50,
   NLWP = 51,
   TGID = 52,
   PERCENT_NORM_CPU = 53,
   ELAPSED = 54,
   PROC_COMM = 124,
   PROC_EXE = 125,
   CWD = 126,

   /* Platform specific fields, defined in ${platform}/ProcessField.h */
   PLATFORM_PROCESS_FIELDS

   /* Do not add new fields after this entry (dynamic entries follow) */
   LAST_PROCESSFIELD
} ProcessField;

struct Settings_;

/* Holds information about regions of the cmdline that should be
 * highlighted (e.g. program basename, delimiter, comm). */
typedef struct ProcessCmdlineHighlight_ {
   size_t offset; /* first character to highlight */
   size_t length; /* How many characters to highlight, zero if unused */
   int attr;      /* The attributes used to highlight */
   int flags;     /* Special flags used for selective highlighting, zero for always */
} ProcessCmdlineHighlight;

/* ProcessMergedCommand is populated by Process_makeCommandStr: It
 * contains the merged Command string, and the information needed by
 * Process_writeCommand to color the string. str will be NULL for kernel
 * threads and zombies */
typedef struct ProcessMergedCommand_ {
   char* str;                                  /* merged Command string */
   size_t highlightCount;                      /* how many portions of cmdline to highlight */
   ProcessCmdlineHighlight highlights[8];      /* which portions of cmdline to highlight */
   bool cmdlineChanged : 1;                    /* whether cmdline changed */
   bool exeChanged : 1;                        /* whether exe changed */
   bool commChanged : 1;                       /* whether comm changed */
   bool prevMergeSet : 1;                      /* whether showMergedCommand was set */
   bool prevPathSet : 1;                       /* whether showProgramPath was set */
   bool prevCommSet : 1;                       /* whether findCommInCmdline was set */
   bool prevCmdlineSet : 1;                    /* whether stripExeFromCmdline was set */
   bool prevShowThreadNames : 1;               /* whether showThreadNames was set */
} ProcessMergedCommand;

typedef struct Process_ {
   /* Super object for emulated OOP */
   Object super;

   /* Pointer to quasi-global data structures */
   const struct ProcessList_* processList;
   const struct Settings_* settings;

   /* Process identifier */
   pid_t pid;

   /* Parent process identifier */
   pid_t ppid;

   /* Thread group identifier */
   pid_t tgid;

   /* Process group identifier */
   int pgrp;

   /* Session identifier */
   int session;

   /* Foreground group identifier of the controlling terminal */
   int tpgid;

   /* This is a kernel (helper) task */
   bool isKernelThread;

   /* This is a userland thread / LWP */
   bool isUserlandThread;

   /* Controlling terminal identifier of the process */
   unsigned long int tty_nr;

   /* Controlling terminal name of the process */
   char* tty_name;

   /* User identifier */
   uid_t st_uid;

   /* User name */
   const char* user;

   /* Process runtime (in hundredth of a second) */
   unsigned long long int time;

   /*
    * Process name including arguments.
    * Use Process_getCommand() for Command actually displayed.
    */
   char* cmdline;

   /* End Offset in cmdline of the process basename */
   int cmdlineBasenameEnd;

   /* Start Offset in cmdline of the process basename */
   int cmdlineBasenameStart;

   /* The process' "command" name */
   char* procComm;

   /* The main process executable */
   char* procExe;

   /* The process/thread working directory */
   char* procCwd;

   /* Offset in procExe of the process basename */
   int procExeBasenameOffset;

   /* Tells if the executable has been replaced in the filesystem since start */
   bool procExeDeleted;

   /* Tells if the process uses replaced shared libraries since start */
   bool usesDeletedLib;

   /* CPU number last executed on */
   int processor;

   /* CPU usage during last cycle (in percent) */
   float percent_cpu;

   /* Memory usage during last cycle (in percent) */
   float percent_mem;

   /* Scheduling priority */
   long int priority;

   /* Nice value */
   long int nice;

   /* Number of threads in this process */
   long int nlwp;

   /* Process start time (in seconds elapsed since the Epoch) */
   time_t starttime_ctime;

   /* Process start time (cached formatted string) */
   char starttime_show[8];

   /* Total program size (in kilobytes) */
   long m_virt;

   /* Resident set size (in kilobytes) */
   long m_resident;

   /* Number of minor faults the process has made which have not required loading a memory page from disk */
   unsigned long int minflt;

   /* Number of major faults the process has made which have required loading a memory page from disk */
   unsigned long int majflt;

   /*
    * Process state (platform dependent):
    *   D  -  Waiting
    *   I  -  Idle
    *   L  -  Acquiring lock
    *   R  -  Running
    *   S  -  Sleeping
    *   T  -  Stopped (on a signal)
    *   X  -  Dead
    *   Z  -  Zombie
    *   t  -  Tracing stop
    *   ?  -  Unknown
    */
   char state;

   /* Whether the process was updated during the current scan */
   bool updated;

   /* Whether the process was tagged by the user */
   bool tag;

   /* Whether to display this process */
   bool show;

   /* Whether this process was shown last cycle */
   bool wasShown;

   /* Whether to show children of this process in tree-mode */
   bool showChildren;

   /*
    * Internal time counts for showing new and exited processes.
    */
   uint64_t seenStampMs;
   uint64_t tombStampMs;

   /*
    * Internal state for tree-mode.
    */
   int indent;
   unsigned int tree_left;
   unsigned int tree_right;
   unsigned int tree_depth;
   unsigned int tree_index;

   /*
    * Internal state for merged Command display
    */
   ProcessMergedCommand mergedCommand;
} Process;

typedef struct ProcessFieldData_ {
   /* Name (displayed in setup menu) */
   const char* name;

   /* Title (display in main screen); must have same width as the printed values */
   const char* title;

   /* Description (displayed in setup menu) */
   const char* description;

   /* Scan flag to enable scan-method otherwise not run */
   uint32_t flags;

   /* Whether the values are process identifiers; adjusts the width of title and values if true */
   bool pidColumn;

   /* Whether the column should be sorted in descending order by default */
   bool defaultSortDesc;
} ProcessFieldData;

// Implemented in platform-specific code:
void Process_writeField(const Process* this, RichString* str, ProcessField field);
int Process_compare(const void* v1, const void* v2);
void Process_delete(Object* cast);
extern const ProcessFieldData Process_fields[LAST_PROCESSFIELD];
#define PROCESS_MAX_PID_DIGITS 19
extern int Process_pidDigits;

typedef Process* (*Process_New)(const struct Settings_*);
typedef void (*Process_WriteField)(const Process*, RichString*, ProcessField);
typedef int (*Process_CompareByKey)(const Process*, const Process*, ProcessField);
typedef const char* (*Process_GetCommandStr)(const Process*);

typedef struct ProcessClass_ {
   const ObjectClass super;
   const Process_WriteField writeField;
   const Process_CompareByKey compareByKey;
   const Process_GetCommandStr getCommandStr;
} ProcessClass;

#define As_Process(this_)                              ((const ProcessClass*)((this_)->super.klass))

#define Process_getCommand(this_)                      (As_Process(this_)->getCommandStr ? As_Process(this_)->getCommandStr((const Process*)(this_)) : Process_getCommandStr((const Process*)(this_)))
#define Process_compareByKey(p1_, p2_, key_)           (As_Process(p1_)->compareByKey ? (As_Process(p1_)->compareByKey(p1_, p2_, key_)) : Process_compareByKey_Base(p1_, p2_, key_))

static inline pid_t Process_getParentPid(const Process* this) {
   return this->tgid == this->pid ? this->ppid : this->tgid;
}

static inline bool Process_isChildOf(const Process* this, pid_t pid) {
   return pid == Process_getParentPid(this);
}

static inline bool Process_isKernelThread(const Process* this) {
   return this->isKernelThread;
}

static inline bool Process_isUserlandThread(const Process* this) {
   return this->isUserlandThread;
}

static inline bool Process_isThread(const Process* this) {
   return Process_isUserlandThread(this) || Process_isKernelThread(this);
}

#define CMDLINE_HIGHLIGHT_FLAG_SEPARATOR  0x00000001
#define CMDLINE_HIGHLIGHT_FLAG_BASENAME   0x00000002
#define CMDLINE_HIGHLIGHT_FLAG_COMM       0x00000004
#define CMDLINE_HIGHLIGHT_FLAG_DELETED    0x00000008

#define ONE_K 1024UL
#define ONE_M (ONE_K * ONE_K)
#define ONE_G (ONE_M * ONE_K)
#define ONE_T (1ULL * ONE_G * ONE_K)
#define ONE_P (1ULL * ONE_T * ONE_K)

#define ONE_DECIMAL_K 1000UL
#define ONE_DECIMAL_M (ONE_DECIMAL_K * ONE_DECIMAL_K)
#define ONE_DECIMAL_G (ONE_DECIMAL_M * ONE_DECIMAL_K)
#define ONE_DECIMAL_T (1ULL * ONE_DECIMAL_G * ONE_DECIMAL_K)
#define ONE_DECIMAL_P (1ULL * ONE_DECIMAL_T * ONE_DECIMAL_K)

void Process_setupColumnWidths(void);

/* Takes number in bytes (base 1024). Prints 6 columns. */
void Process_printBytes(RichString* str, unsigned long long number, bool coloring);

/* Takes number in kilo bytes (base 1024). Prints 6 columns. */
void Process_printKBytes(RichString* str, unsigned long long number, bool coloring);

/* Takes number as count (base 1000). Prints 12 columns. */
void Process_printCount(RichString* str, unsigned long long number, bool coloring);

/* Takes time in hundredths of a seconds. Prints 9 columns. */
void Process_printTime(RichString* str, unsigned long long totalHundredths, bool coloring);

/* Takes rate in bare unit (base 1024) per second. Prints 12 columns. */
void Process_printRate(RichString* str, double rate, bool coloring);

void Process_fillStarttimeBuffer(Process* this);

void Process_printLeftAlignedField(RichString* str, int attr, const char* content, unsigned int width);

void Process_printPercentage(float val, char* buffer, int n, int* attr);

void Process_display(const Object* cast, RichString* out);

void Process_done(Process* this);

extern const ProcessClass Process_class;

void Process_init(Process* this, const struct Settings_* settings);

void Process_toggleTag(Process* this);

bool Process_isNew(const Process* this);

bool Process_isTomb(const Process* this);

bool Process_setPriority(Process* this, int priority);

bool Process_changePriorityBy(Process* this, Arg delta);

bool Process_sendSignal(Process* this, Arg sgn);

int Process_pidCompare(const void* v1, const void* v2);

int Process_compareByKey_Base(const Process* p1, const Process* p2, ProcessField key);

// Avoid direct calls, use Process_getCommand instead
const char* Process_getCommandStr(const Process* this);

void Process_updateComm(Process* this, const char* comm);
void Process_updateCmdline(Process* this, const char* cmdline, int basenameStart, int basenameEnd);
void Process_updateExe(Process* this, const char* exe);

/* This function constructs the string that is displayed by
 * Process_writeCommand and also returned by Process_getCommandStr */
void Process_makeCommandStr(Process* this);

void Process_writeCommand(const Process* this, int attr, int baseAttr, RichString* str);

#endif

© 2014-2024 Faster IT GmbH | imprint | privacy policy