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author | Lennart Poettering <lennart@poettering.net> | 2018-02-09 17:32:26 +0100 |
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committer | Lennart Poettering <lennart@poettering.net> | 2018-02-09 17:32:26 +0100 |
commit | a04fcf17badf8ee2ed549bf99c4e5a37e0f7aecf (patch) | |
tree | 4d3937a1a8f2097f9843be8af8879ffc522ffcf1 /src/test/test-procfs-util.c | |
parent | ba4b1544f2a69c6786295d437b2f970f5ed1f68f (diff) | |
download | systemd-a04fcf17badf8ee2ed549bf99c4e5a37e0f7aecf.tar.gz |
procfs-util: add APIs to get consumed CPU time and used memory from /proc
This is preparation for emulating the "usage_usec" keyed attribute of
the "cpu.stat" property of the root cgroup from data in /proc. Similar,
for emulating the "memory.current" attribute.
Diffstat (limited to 'src/test/test-procfs-util.c')
-rw-r--r-- | src/test/test-procfs-util.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/test/test-procfs-util.c b/src/test/test-procfs-util.c index a253182517..10229de4e8 100644 --- a/src/test/test-procfs-util.c +++ b/src/test/test-procfs-util.c @@ -3,15 +3,24 @@ #include <errno.h> #include "log.h" +#include "parse-util.h" #include "procfs-util.h" int main(int argc, char *argv[]) { + char buf[CONST_MAX(FORMAT_TIMESPAN_MAX, FORMAT_BYTES_MAX)]; + nsec_t nsec; uint64_t v; int r; log_parse_environment(); log_open(); + assert_se(procfs_cpu_get_usage(&nsec) >= 0); + log_info("Current sytem CPU time: %s", format_timespan(buf, sizeof(buf), nsec/NSEC_PER_USEC, 1)); + + assert_se(procfs_memory_get_current(&v) >= 0); + log_info("Current memory usage: %s", format_bytes(buf, sizeof(buf), v)); + assert_se(procfs_tasks_get_current(&v) >= 0); log_info("Current number of tasks: %" PRIu64, v); |