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root/i-scream/projects/libstatgrab/src/libstatgrab/process_stats.c

Comparing projects/libstatgrab/src/libstatgrab/process_stats.c (file contents):
Revision 1.24 by pajs, Sun Mar 28 18:22:58 2004 UTC vs.
Revision 1.33 by tdb, Sun Apr 4 11:28:46 2004 UTC

#	Line 42 | Line 42
42		#endif
43		#ifdef LINUX
44		#include <limits.h>
45	+	#include <unistd.h>
46	+	#include <sys/stat.h>
47	+	#include <fcntl.h>
48		#define PROC_LOCATION "/proc"
49		#define MAX_FILE_LENGTH PATH_MAX
50		#endif
#	Line 54 | Line 57
57		#else
58		#include <sys/proc.h>
59		#endif
60	+	#include <string.h>
61	+	#include <paths.h>
62	+	#include <fcntl.h>
63	+	#include <limits.h>
64	+	#include <kvm.h>
65		#endif
66
67		int get_proc_snapshot(proc_state_t **ps){
68		proc_state_t *proc_state = NULL;
69		proc_state_t *proc_state_ptr;
70		int proc_state_size = 0;
71	+	#ifdef ALLBSD
72	+	int mib[3];
73	+	size_t size;
74	+	struct kinfo_proc *kp_stats;
75	+	int procs, i, alloc;
76	+	static kvm_t *kvmd;
77	+	char **args;
78	+	char *proctitle;
79	+	#endif
80		#if defined(SOLARIS) || defined(LINUX)
81		DIR *proc_dir;
82		struct dirent *dir_entry;
#	Line 68 | Line 85 | int get_proc_snapshot(proc_state_t **ps){
85		#ifdef SOLARIS
86		psinfo_t process_info;
87		#endif
88	+	#ifdef LINUX
89	+	char s;
90	+	/* If someone has a executable of 4k filename length, they deserve to get it truncated :) */
91	+	char ps_name[4096];
92	+	char *ptr;
93	+	static char *psargs = NULL;
94	+	static int psarg_size = 0;
95	+	unsigned long stime, utime;
96	+	int x;
97	+	int fn;
98	+	int toread;
99	+	ssize_t size;
100	+	int t_read;
101	+	#endif
102
103		if((proc_dir=opendir(PROC_LOCATION))==NULL){
104	<	return NULL;
104	>	return -1;
105		}
106
107		while((dir_entry=readdir(proc_dir))!=NULL){
#	Line 79 | Line 110 | int get_proc_snapshot(proc_state_t **ps){
110		#ifdef SOLARIS
111		snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/psinfo", dir_entry->d_name);
112		#endif
113	+	#ifdef LINUX
114	+	snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/stat", dir_entry->d_name);
115	+	#endif
116		if((f=fopen(filename, "r"))==NULL){
117		/* Open failed.. Process since vanished, or the path was too long.
118		* Ah well, move onwards to the next one */
#	Line 86 | Line 120 | int get_proc_snapshot(proc_state_t **ps){
120		}
121		#ifdef SOLARIS
122		fread(&process_info, sizeof(psinfo_t), 1, f);
123	+	#endif
124
125		proc_state = realloc(proc_state, (1+proc_state_size)*sizeof(proc_state_t));
126		proc_state_ptr = proc_state+proc_state_size;
127	<
127	>	#ifdef SOLARIS
128		proc_state_ptr->pid = process_info.pr_pid;
129		proc_state_ptr->parent = process_info.pr_ppid;
130		proc_state_ptr->pgid = process_info.pr_pgid;
#	Line 110 | Line 145 | int get_proc_snapshot(proc_state_t **ps){
145		if(process_info.pr_lwp.pr_state==4) proc_state_ptr->state = STOPPED;
146		if(process_info.pr_lwp.pr_state==6) proc_state_ptr->state = RUNNING;
147		#endif
148	+	#ifdef LINUX
149	+	x = fscanf(f, "%d %4096s %c %d %d %*d %*d %*d %*lu %*lu %*lu %*lu %*lu %lu %lu %*ld %*ld %*ld %d %*ld %*ld %*lu %llu %llu %*lu %*lu %*lu %*lu %*lu %*lu %*lu %*lu %*lu %*lu %*lu %*lu %*lu %*d %*d\n", &(proc_state_ptr->pid), ps_name, &s, &(proc_state_ptr->parent), &(proc_state_ptr->pgid), &utime, &stime, &(proc_state_ptr->nice), &(proc_state_ptr->proc_size), &(proc_state_ptr->proc_resident));
150	+	proc_state_ptr->proc_resident = proc_state_ptr->proc_resident * getpagesize();
151	+	if(s == 'S') proc_state_ptr->state = SLEEPING;
152	+	if(s == 'R') proc_state_ptr->state = RUNNING;
153	+	if(s == 'Z') proc_state_ptr->state = ZOMBIE;
154	+	if(s == 'T') proc_state_ptr->state = STOPPED;
155	+	if(s == 'D') proc_state_ptr->state = STOPPED;
156	+
157	+	/* pa_name[0] should = '(' */
158	+	ptr = strchr(&ps_name[1], ')');
159	+	if(ptr !=NULL) *ptr='\0';
160	+	proc_state_ptr->process_name = strdup(&ps_name[1]);
161
162	<	proc_state_size++;
162	>	/* Need to do cpu */
163	>
164	>
165	>	/* proctitle */
166	>	snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/cmdline", dir_entry->d_name);
167	>
168	>	if((fn=open(filename, O_RDONLY)) == -1){
169	>	/* Open failed.. Process since vanished, or the path was too long.
170	>	* Ah well, move onwards to the next one */
171	>	continue;
172	>	}
173	>	#define         PSARG_START_SIZE 128
174	>	if(psargs == NULL){
175	>	psargs = malloc(PSARG_START_SIZE);
176	>	psarg_size = PSARG_START_SIZE;
177	>	}
178	>	ptr = psargs;
179	>	t_read = 0;
180	>	toread = psarg_size;
181	>	while((size = read(fn, ptr, toread)) == toread){
182	>	psargs = realloc(psargs, (psarg_size + PSARG_START_SIZE));
183	>	ptr = psargs+psarg_size;
184	>	t_read = psarg_size;
185	>	psarg_size+=PSARG_START_SIZE;
186	>	toread = PSARG_START_SIZE;
187	>	}
188	>	if(size != -1) t_read+=size;
189	>
190	>	ptr = psargs;
191	>	for(x=0; x<t_read; x++){
192	>	if (*ptr == '\0') *ptr = ' ';
193	>	ptr++;
194	>	}
195	>	/*  for safety sake */
196	>	psargs[t_read] = '\0';
197	>
198	>	proc_state_ptr->proctitle = strdup(psargs);
199	>
200		#endif
201
202	+	proc_state_size++;
203
204		fclose(f);
205		}
206		closedir(proc_dir);
207	<	*ps = proc_state;
207	>	#endif
208
209	+	#ifdef ALLBSD
210	+
211	+	#ifdef NETBSD
212	+	kvmd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, NULL);
213	+	#else
214	+	kvmd = kvm_openfiles(_PATH_DEVNULL, _PATH_DEVNULL, NULL, O_RDONLY, NULL);
215	+	#endif
216	+
217	+	if(kvmd == NULL) return NULL;
218	+
219	+	kp_stats = kvm_getprocs(kvmd, KERN_PROC_ALL, 0, &procs);
220	+
221	+	if (kp_stats == NULL || procs < 0) {
222	+	return NULL;
223	+	}
224	+
225	+	for (i = 0; i < procs; i++) {
226	+	/* replace with something more sensible */
227	+	proc_state = realloc(proc_state,
228	+	(1+proc_state_size)*sizeof(proc_state_t));
229	+	if(proc_state == NULL ) {
230	+	return NULL;
231	+	}
232	+	proc_state_ptr = proc_state+proc_state_size;
233	+
234	+	#ifdef FREEBSD5
235	+	proc_state_ptr->process_name =
236	+	strdup(kp_stats[i].ki_comm);
237	+	#else
238	+	proc_state_ptr->process_name =
239	+	strdup(kp_stats[i].kp_proc.p_comm);
240	+	#endif
241	+
242	+	args = kvm_getargv(kvmd, &(kp_stats[i]), 0);
243	+	if(args != NULL) {
244	+	alloc = 1;
245	+	proctitle = malloc(alloc);
246	+	if(proctitle == NULL) {
247	+	return NULL;
248	+	}
249	+	while(*args != NULL) {
250	+	if(strlen(proctitle) + strlen(*args) >= alloc) {
251	+	alloc = (alloc + strlen(*args)) << 1;
252	+	proctitle = realloc(proctitle, alloc);
253	+	if(proctitle == NULL) {
254	+	return NULL;
255	+	}
256	+	}
257	+	strncat(proctitle, *args, strlen(*args));
258	+	strncat(proctitle, " ", 1);
259	+	args++;
260	+	}
261	+	/* remove trailing space */
262	+	proctitle[strlen(proctitle)-1] = NULL;
263	+	proc_state_ptr->proctitle = proctitle;
264	+	}
265	+	else {
266	+	proc_state_ptr->proctitle =
267	+	malloc(strlen(proc_state_ptr->process_name)+4);
268	+	if(proc_state_ptr->proctitle == NULL) {
269	+	return NULL;
270	+	}
271	+	sprintf(proc_state_ptr->proctitle, " (%s)",
272	+	proc_state_ptr->process_name);
273	+	}
274	+
275	+	#ifdef FREEBSD5
276	+	proc_state_ptr->pid = kp_stats[i].ki_pid;
277	+	proc_state_ptr->parent = kp_stats[i].ki_ppid;
278	+	proc_state_ptr->pgid = kp_stats[i].ki_pgid;
279	+	#else
280	+	proc_state_ptr->pid = kp_stats[i].kp_proc.p_pid;
281	+	proc_state_ptr->parent = kp_stats[i].kp_eproc.e_ppid;
282	+	proc_state_ptr->pgid = kp_stats[i].kp_eproc.e_pgid;
283	+	#endif
284	+
285	+	#ifdef FREEBSD5
286	+	proc_state_ptr->uid = kp_stats[i].ki_ruid;
287	+	proc_state_ptr->euid = kp_stats[i].ki_uid;
288	+	proc_state_ptr->gid = kp_stats[i].ki_rgid;
289	+	proc_state_ptr->egid = kp_stats[i].ki_svgid;
290	+	#else
291	+	proc_state_ptr->uid = kp_stats[i].kp_eproc.e_pcred.p_ruid;
292	+	proc_state_ptr->euid = kp_stats[i].kp_eproc.e_pcred.p_svuid;
293	+	proc_state_ptr->gid = kp_stats[i].kp_eproc.e_pcred.p_rgid;
294	+	proc_state_ptr->egid = kp_stats[i].kp_eproc.e_pcred.p_svgid;
295	+	#endif
296	+
297	+	#ifdef FREEBSD5
298	+	proc_state_ptr->proc_size = kp_stats[i].ki_size;
299	+	/* This is in pages */
300	+	proc_state_ptr->proc_resident =
301	+	kp_stats[i].ki_rssize * getpagesize();
302	+	/* This is in microseconds */
303	+	proc_state_ptr->time_spent = kp_stats[i].ki_runtime / 1000000;
304	+	proc_state_ptr->cpu_percent =
305	+	((double)kp_stats[i].ki_pctcpu / FSCALE) * 100.0;
306	+	proc_state_ptr->nice = kp_stats[i].ki_nice;
307	+	#else
308	+	proc_state_ptr->proc_size =
309	+	kp_stats[i].kp_eproc.e_vm.vm_map.size;
310	+	/* This is in pages */
311	+	proc_state_ptr->proc_resident =
312	+	kp_stats[i].kp_eproc.e_vm.vm_rssize * getpagesize();
313	+	/* This is in microseconds */
314	+	#ifdef NETBSD
315	+	proc_state_ptr->time_spent =
316	+	kp_stats[i].kp_proc.p_rtime.tv_sec;
317	+	#else
318	+	proc_state_ptr->time_spent =
319	+	kp_stats[i].kp_proc.p_runtime / 1000000;
320	+	#endif
321	+	proc_state_ptr->cpu_percent =
322	+	((double)kp_stats[i].kp_proc.p_pctcpu / FSCALE) * 100.0;
323	+	proc_state_ptr->nice = kp_stats[i].kp_proc.p_nice;
324	+	#endif
325	+
326	+	#ifdef FREEBSD5
327	+	switch (kp_stats[i].ki_stat) {
328	+	#else
329	+	switch (kp_stats[i].kp_proc.p_stat) {
330	+	#endif
331	+	case SIDL:
332	+	case SRUN:
333	+	#ifdef SONPROC
334	+	case SONPROC: /* NetBSD */
335	+	#endif
336	+	proc_state_ptr->state = RUNNING;
337	+	break;
338	+	case SSLEEP:
339	+	#ifdef SWAIT
340	+	case SWAIT: /* FreeBSD 5 */
341	+	#endif
342	+	#ifdef SLOCK
343	+	case SLOCK: /* FreeBSD 5 */
344	+	#endif
345	+	proc_state_ptr->state = SLEEPING;
346	+	break;
347	+	case SSTOP:
348	+	proc_state_ptr->state = STOPPED;
349	+	break;
350	+	case SZOMB:
351	+	#ifdef SDEAD
352	+	case SDEAD: /* OpenBSD & NetBSD */
353	+	#endif
354	+	proc_state_ptr->state = ZOMBIE;
355	+	break;
356	+	default:
357	+	proc_state_ptr->state = UNKNOWN;
358	+	break;
359	+	}
360	+	proc_state_size++;
361	+	}
362	+
363	+	free(kp_stats);
364	+	#endif
365	+
366	+	*ps = proc_state;
367		return proc_state_size;
368		}
369
370	+	process_stat_t *get_process_stats() {
371	+	static process_stat_t process_stat;
372	+	proc_state_t *ps;
373	+	int ps_size, x;
374	+
375	+	process_stat.sleeping = 0;
376	+	process_stat.running = 0;
377	+	process_stat.zombie = 0;
378	+	process_stat.stopped = 0;
379	+	process_stat.total = 0;
380	+
381	+	ps_size = get_proc_snapshot(&ps);
382	+
383	+	if(ps_size == NULL) {
384	+	return NULL;
385	+	}
386	+
387	+	for(x = 0; x < ps_size; x++) {
388	+	switch (ps->state) {
389	+	/* currently no mapping for UNKNOWN in process_stat_t */
390	+	case RUNNING:
391	+	process_stat.running++;
392	+	break;
393	+	case SLEEPING:
394	+	process_stat.sleeping++;
395	+	break;
396	+	case STOPPED:
397	+	process_stat.stopped++;
398	+	break;
399	+	case ZOMBIE:
400	+	process_stat.zombie++;
401	+	break;
402	+	}
403	+	ps++;
404	+	}
405	+
406	+	process_stat.total = ps_size;
407	+
408	+	return &process_stat;
409	+	}

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