Assume that /proc/meminfo can be missing

[elogind.git] / src / shared / time-util.c

diff --git a/src/shared/time-util.c b/src/shared/time-util.c
index b6a2bec15693161bc7e1b6ccd38cb6515611a3d4..860be61e8b7b8af74a9e13c9b50da782776bf182 100644 (file)
--- a/src/shared/time-util.c
+++ b/src/shared/time-util.c
@@ -168,6 +168,28 @@ char *format_timestamp(char *buf, size_t l, usec_t t) {
         return buf;
 }
 
+char *format_timestamp_us(char *buf, size_t l, usec_t t) {
+        struct tm tm;
+        time_t sec;
+
+        assert(buf);
+        assert(l > 0);
+
+        if (t <= 0)
+                return NULL;
+
+        sec = (time_t) (t / USEC_PER_SEC);
+        localtime_r(&sec, &tm);
+
+        if (strftime(buf, l, "%a %Y-%m-%d %H:%M:%S", &tm) <= 0)
+                return NULL;
+        snprintf(buf + strlen(buf), l - strlen(buf), ".%06llu", t % USEC_PER_SEC);
+        if (strftime(buf + strlen(buf), l - strlen(buf), " %Z", &tm) <= 0)
+                return NULL;
+
+        return buf;
+}
+
 char *format_timestamp_relative(char *buf, size_t l, usec_t t) {
         usec_t n, d;
 
@@ -251,6 +273,12 @@ char *format_timespan(char *buf, size_t l, usec_t t, usec_t accuracy) {
         if (t == (usec_t) -1)
                 return NULL;
 
+        if (t <= 0) {
+                snprintf(p, l, "0");
+                p[l-1] = 0;
+                return p;
+        }
+
         /* The result of this function can be parsed with parse_sec */
 
         for (i = 0; i < ELEMENTSOF(table); i++) {
@@ -259,15 +287,11 @@ char *format_timespan(char *buf, size_t l, usec_t t, usec_t accuracy) {
                 bool done = false;
                 usec_t a, b;
 
-                if (t == 0 || t < accuracy) {
-                        if (!something) {
-                                snprintf(p, l, "0");
-                                p[l-1] = 0;
-                                return p;
-                        }
+                if (t <= 0)
+                        break;
 
+                if (t < accuracy && something)
                         break;
-                }
 
                 if (t < table[i].usec)
                         continue;
@@ -322,7 +346,6 @@ char *format_timespan(char *buf, size_t l, usec_t t, usec_t accuracy) {
                 l -= n;
                 p += n;
 
-
                 something = true;
         }