tests: add times.test

* tests/times.c: New file.
* tests/times.test: New test.
* tests/Makefile.am (check_PROGRAMS): Add times.
(TESTS): Add times.test.
(times_LDADD): Define.
* tests/.gitignore: Add times.

diff --git a/tests/.gitignore b/tests/.gitignore
index 8500ca747ac7ae44177b69e140973b51c8a3ac18..d9a0a75729944918f25407da83317e0a4a26b6d7 100644 (file)
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -47,6 +47,7 @@ stat32
 statfs
 sysinfo
 time
+times
 uid
 uid16
 uid32

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 0ba7ca7255131fe4613335116511af311dde4358..24e255ebcd4edb03a9872304bbcebec80331e399 100644 (file)
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -60,6 +60,7 @@ check_PROGRAMS = \
        statfs \
        sysinfo \
        time \
+       times \
        uid \
        uid16 \
        uid32 \
@@ -80,6 +81,7 @@ mq_LDADD = -lrt
 pc_LDADD = $(dl_LIBS)
 stat_CFLAGS = $(AM_CFLAGS) -D_FILE_OFFSET_BITS=64
 statfs_CFLAGS = $(AM_CFLAGS) -D_FILE_OFFSET_BITS=64
+times_LDADD = -lrt
 uio_CFLAGS = $(AM_CFLAGS) -D_FILE_OFFSET_BITS=64
 stack_fcall_SOURCES = stack-fcall.c \
        stack-fcall-0.c stack-fcall-1.c stack-fcall-2.c stack-fcall-3.c
@@ -138,6 +140,7 @@ TESTS = \
        ppoll.test \
        sun_path.test \
        time.test \
+       times.test \
        umovestr.test \
        umovestr2.test \
        unix-yy.test \

diff --git a/tests/times.c b/tests/times.c
new file mode 100644 (file)
index 0000000..8bdb0ef
--- /dev/null
+++ b/tests/times.c
@@ -0,0 +1,83 @@
+/**
+ * @file
+ * This test burns some CPU cycles in user space and kernel space in order to
+ * get some non-zero values returned by times(2).
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <sched.h>
+#include <stdio.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <sys/times.h>
+#include <sys/wait.h>
+
+enum {
+       NUM_USER_ITERS = 1000000,
+       CPUTIME_LIMIT_SEC = 2,
+};
+
+int
+main (void)
+{
+       struct tms tbuf;
+       struct timespec ts;
+       clock_t res;
+       unsigned long long llres;
+       volatile int dummy;
+       pid_t pid;
+       int i;
+
+       pid = fork();
+
+       if (pid < 0)
+               return 77;
+
+       /* Enjoying my user time */
+       while (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts) == 0) {
+               if (ts.tv_sec >= CPUTIME_LIMIT_SEC)
+                       break;
+
+               for (i = 0; i < NUM_USER_ITERS; i++, dummy++)
+                       ;
+       }
+
+       /* Enjoying my system time */
+       while (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts) == 0) {
+               if (ts.tv_sec >= (CPUTIME_LIMIT_SEC * 2))
+                       break;
+
+               sched_yield();
+       }
+
+       if (pid == 0) {
+               return 0;
+       } else {
+               wait(NULL);
+       }
+
+       res = times(&tbuf);
+
+       if (res == (clock_t) -1)
+               return 77;
+
+       if (sizeof(llres) > sizeof(res))
+               llres = (unsigned long) res;
+       else
+               llres = res;
+
+       printf("times({tms_utime=%llu, tms_stime=%llu, ",
+               (unsigned long long) tbuf.tms_utime,
+               (unsigned long long) tbuf.tms_stime);
+       printf("tms_cutime=%llu, tms_cstime=%llu}) = %llu\n",
+               (unsigned long long) tbuf.tms_cutime,
+               (unsigned long long) tbuf.tms_cstime,
+               llres);
+       puts("+++ exited with 0 +++");
+
+       return 0;
+}

diff --git a/tests/times.test b/tests/times.test
new file mode 100755 (executable)
index 0000000..28ecc3e
--- /dev/null
+++ b/tests/times.test
@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# Check decoding of times syscall
+
+. "${srcdir=.}/init.sh"
+
+run_prog > /dev/null
+OUT="$LOG.out"
+run_strace -etimes -esignal=none $args > "$OUT"
+match_diff "$OUT" "$LOG"
+rm -f "$OUT"
+
+exit 0