unsigned long long io_collected_usec;
unsigned long long last_io_collected_usec;
+ char *fds_dirname; // the full directory name in /proc/PID/fd
+
char *stat_filename;
char *statm_filename;
char *io_filename;
if(all_pids[pid]->next) all_pids[pid]->next->prev = all_pids[pid]->prev;
if(all_pids[pid]->prev) all_pids[pid]->prev->next = all_pids[pid]->next;
- if(all_pids[pid]->fds) freez(all_pids[pid]->fds);
- if(all_pids[pid]->stat_filename) freez(all_pids[pid]->stat_filename);
- if(all_pids[pid]->statm_filename) freez(all_pids[pid]->statm_filename);
- if(all_pids[pid]->io_filename) freez(all_pids[pid]->io_filename);
- if(all_pids[pid]->cmdline_filename) freez(all_pids[pid]->cmdline_filename);
+ freez(all_pids[pid]->fds);
+ freez(all_pids[pid]->fds_dirname);
+ freez(all_pids[pid]->stat_filename);
+ freez(all_pids[pid]->statm_filename);
+ freez(all_pids[pid]->io_filename);
+ freez(all_pids[pid]->cmdline_filename);
freez(all_pids[pid]);
all_pids[pid] = NULL;
if(unlikely(!ff)) goto cleanup;
// if(set_quotes) procfile_set_quotes(ff, "()");
- if(set_quotes) procfile_set_open_close(ff, "(", ")");
+ if(unlikely(set_quotes))
+ procfile_set_open_close(ff, "(", ")");
ff = procfile_readall(ff);
if(unlikely(!ff)) goto cleanup;
// p->pid = str2ul(procfile_lineword(ff, 0, 0+i));
- strncpyz(p->comm, procfile_lineword(ff, 0, 1), MAX_COMPARE_NAME);
+ if(unlikely(!p->comm[0]))
+ strncpyz(p->comm, procfile_lineword(ff, 0, 1), MAX_COMPARE_NAME);
// p->state = *(procfile_lineword(ff, 0, 2));
p->ppid = (int32_t)str2ul(procfile_lineword(ff, 0, 3));
return file_descriptor_set_on_empty_slot(name, hash, type);
}
+static inline void make_all_pid_fds_negative(struct pid_stat *p) {
+ int *fd = p->fds, *end = &p->fds[p->fds_size];
+ while(fd < end) {
+ *fd = -(*fd);
+ fd++;
+ }
+}
+
+static inline void cleanup_negative_pid_fds(struct pid_stat *p) {
+ int *fd = p->fds, *end = &p->fds[p->fds_size];
+ while(fd < end) {
+ if(unlikely(*fd < 0)) {
+ file_descriptor_not_used(-(*fd));
+ *fd++ = 0;
+ }
+ else
+ fd++;
+ }
+}
+
+static inline void zero_pid_fds(struct pid_stat *p, int first, int size) {
+ int *fd = &p->fds[first], *end = &p->fds[first + size];
+ while(fd < end) *fd++ = 0;
+}
+
static inline int read_pid_file_descriptors(struct pid_stat *p) {
- char dirname[FILENAME_MAX+1];
-
- snprintfz(dirname, FILENAME_MAX, "%s/proc/%d/fd", global_host_prefix, p->pid);
- DIR *fds = opendir(dirname);
- if(fds) {
- int c;
- struct dirent *de;
- char fdname[FILENAME_MAX + 1];
- char linkname[FILENAME_MAX + 1];
-
- // make the array negative
- for(c = 0 ; c < p->fds_size ; c++)
- p->fds[c] = -p->fds[c];
-
- while((de = readdir(fds))) {
- if(strcmp(de->d_name, ".") == 0 || strcmp(de->d_name, "..") == 0)
- continue;
+ if(unlikely(!p->fds_dirname)) {
+ char dirname[FILENAME_MAX+1];
+ snprintfz(dirname, FILENAME_MAX, "%s/proc/%d/fd", global_host_prefix, p->pid);
+ p->fds_dirname = strdupz(dirname);
+ }
- // check if the fds array is small
- int fdid = (int)str2l(de->d_name);
- if(fdid < 0) continue;
- if(fdid >= p->fds_size) {
- // it is small, extend it
- if(unlikely(debug))
- fprintf(stderr, "apps.plugin: extending fd memory slots for %s from %d to %d\n", p->comm, p->fds_size, fdid + MAX_SPARE_FDS);
+ DIR *fds = opendir(p->fds_dirname);
+ if(unlikely(!fds)) return 0;
- p->fds = reallocz(p->fds, (fdid + MAX_SPARE_FDS) * sizeof(int));
+ struct dirent *de;
+ char fdname[FILENAME_MAX + 1];
+ char linkname[FILENAME_MAX + 1];
- // and initialize it
- for(c = p->fds_size ; c < (fdid + MAX_SPARE_FDS) ; c++) p->fds[c] = 0;
- p->fds_size = fdid + MAX_SPARE_FDS;
- }
+ // we make all pid fds negative, so that
+ // we can detect unused file descriptors
+ // at the end, to free them
+ make_all_pid_fds_negative(p);
+
+ while((de = readdir(fds))) {
+ // we need only files with numeric names
+
+ if(unlikely(de->d_name[0] < '0' || de->d_name[0] > '9'))
+ continue;
- if(p->fds[fdid] == 0) {
- // we don't know this fd, get it
-
- sprintf(fdname, "%s/proc/%d/fd/%s", global_host_prefix, p->pid, de->d_name);
- ssize_t l = readlink(fdname, linkname, FILENAME_MAX);
- if(l == -1) {
- if(debug || (p->target && p->target->debug)) {
- if(debug || (p->target && p->target->debug))
- error("Cannot read link %s", fdname);
- }
- continue;
+ // get its number
+ int fdid = (int)str2l(de->d_name);
+ if(unlikely(fdid < 0)) continue;
+
+ // check if the fds array is small
+ if(unlikely(fdid >= p->fds_size)) {
+ // it is small, extend it
+
+ if(unlikely(debug))
+ fprintf(stderr, "apps.plugin: extending fd memory slots for %s from %d to %d\n", p->comm, p->fds_size, fdid + MAX_SPARE_FDS);
+
+ p->fds = reallocz(p->fds, (fdid + MAX_SPARE_FDS) * sizeof(int));
+
+ // and initialize it
+ zero_pid_fds(p, p->fds_size, (fdid + MAX_SPARE_FDS) - p->fds_size);
+ p->fds_size = fdid + MAX_SPARE_FDS;
+ }
+
+ if(unlikely(p->fds[fdid] == 0)) {
+ // we don't know this fd, get it
+
+ sprintf(fdname, "%s/proc/%d/fd/%s", global_host_prefix, p->pid, de->d_name);
+ ssize_t l = readlink(fdname, linkname, FILENAME_MAX);
+ if(unlikely(l == -1)) {
+ if(debug || (p->target && p->target->debug)) {
+ if(debug || (p->target && p->target->debug))
+ error("Cannot read link %s", fdname);
}
+ continue;
+ }
+ else
linkname[l] = '\0';
- file_counter++;
- // if another process already has this, we will get
- // the same id
- p->fds[fdid] = file_descriptor_find_or_add(linkname);
- }
+ file_counter++;
- // else make it positive again, we need it
- // of course, the actual file may have changed, but we don't care so much
- // FIXME: we could compare the inode as returned by readdir dirent structure
- else p->fds[fdid] = -p->fds[fdid];
+ // if another process already has this, we will get
+ // the same id
+ p->fds[fdid] = file_descriptor_find_or_add(linkname);
}
- closedir(fds);
- // remove all the negative file descriptors
- for(c = 0 ; c < p->fds_size ; c++) if(p->fds[c] < 0) {
- file_descriptor_not_used(-p->fds[c]);
- p->fds[c] = 0;
- }
+ // else make it positive again, we need it
+ // of course, the actual file may have changed, but we don't care so much
+ // FIXME: we could compare the inode as returned by readdir dirent structure
+
+ else
+ p->fds[fdid] = -p->fds[fdid];
}
- else return 0;
+
+ closedir(fds);
+ cleanup_negative_pid_fds(p);
return 1;
}
return status;
}
+static inline void assign_target_to_pid(struct pid_stat *p) {
+ uint32_t hash = simple_hash(p->comm);
+ size_t pclen = strlen(p->comm);
+
+ struct target *w;
+ for(w = apps_groups_root_target; w ; w = w->next) {
+ // if(debug || (p->target && p->target->debug)) fprintf(stderr, "apps.plugin: \t\tcomparing '%s' with '%s'\n", w->compare, p->comm);
+
+ // find it - 4 cases:
+ // 1. the target is not a pattern
+ // 2. the target has the prefix
+ // 3. the target has the suffix
+ // 4. the target is something inside cmdline
+
+ if(unlikely(( (!w->starts_with && !w->ends_with && w->comparehash == hash && !strcmp(w->compare, p->comm))
+ || (w->starts_with && !w->ends_with && !strncmp(w->compare, p->comm, w->comparelen))
+ || (!w->starts_with && w->ends_with && pclen >= w->comparelen && !strcmp(w->compare, &p->comm[pclen - w->comparelen]))
+ || (proc_pid_cmdline_is_needed && w->starts_with && w->ends_with && strstr(p->cmdline, w->compare))
+ ))) {
+
+ if(w->target) p->target = w->target;
+ else p->target = w;
+
+ if(debug || (p->target && p->target->debug))
+ fprintf(stderr, "apps.plugin: \t\t%s linked to target %s\n", p->comm, p->target->name);
+
+ break;
+ }
+ }
+}
+
static inline int collect_data_for_pid(pid_t pid) {
if(unlikely(pid <= 0 || pid > pid_max)) {
error("Invalid pid %d read (expected 1 to %d). Ignoring process.", pid, pid_max);
if(unlikely(debug))
fprintf(stderr, "apps.plugin: \tJust added %d (%s)\n", pid, p->comm);
- uint32_t hash = simple_hash(p->comm);
- size_t pclen = strlen(p->comm);
-
- struct target *w;
- for(w = apps_groups_root_target; w ; w = w->next) {
- // if(debug || (p->target && p->target->debug)) fprintf(stderr, "apps.plugin: \t\tcomparing '%s' with '%s'\n", w->compare, p->comm);
-
- // find it - 4 cases:
- // 1. the target is not a pattern
- // 2. the target has the prefix
- // 3. the target has the suffix
- // 4. the target is something inside cmdline
- if( (!w->starts_with && !w->ends_with && w->comparehash == hash && !strcmp(w->compare, p->comm))
- || (w->starts_with && !w->ends_with && !strncmp(w->compare, p->comm, w->comparelen))
- || (!w->starts_with && w->ends_with && pclen >= w->comparelen && !strcmp(w->compare, &p->comm[pclen - w->comparelen]))
- || (proc_pid_cmdline_is_needed && w->starts_with && w->ends_with && strstr(p->cmdline, w->compare))
- ) {
- if(w->target) p->target = w->target;
- else p->target = w;
-
- if(debug || (p->target && p->target->debug))
- fprintf(stderr, "apps.plugin: \t\t%s linked to target %s\n", p->comm, p->target->name);
-
- break;
- }
- }
+ assign_target_to_pid(p);
}
// --------------------------------------------------------------------
projects / netdata.git / blobdiff