Top level directory reorg

Move src/po -> po
Combine common and compat -> lib/util
Move zlib -> lib/zlib

lib/util/clock_gettime.c

@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2014 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#if !defined(HAVE_CLOCK_GETTIME)
+
+#include <sys/types.h>
+#include <sys/time.h>
+
+#include <errno.h>
+#include <stdio.h>
+#ifdef TIME_WITH_SYS_TIME
+# include <time.h>
+#endif
+#ifndef HAVE_STRUCT_TIMESPEC
+# include "compat/timespec.h"
+#endif
+
+#include "missing.h"
+
+#ifdef __MACH__
+# include <mach/mach.h>
+# include <mach/mach_time.h>
+# include <mach/clock.h>
+#endif
+
+/*
+ * Trivial clock_gettime() that supports CLOCK_REALTIME
+ * (and CLOCK_MONOTONIC on Mach).
+ */
+int
+clock_gettime(clockid_t clock_id, struct timespec *ts)
+{
+
+    switch (clock_id) {
+#ifdef __MACH__
+    case CLOCK_MONOTONIC:
+	{
+	    uint64_t abstime, nsec;
+	    static mach_timebase_info_data_t timebase_info;
+
+	    if (timebase_info.denom == 0)
+		(void) mach_timebase_info(&timebase_info);
+	    abstime = mach_absolute_time();
+	    nsec = abstime * timebase_info.numer / timebase_info.denom;
+	    ts->tv_sec = nsec / 1000000000;
+	    ts->tv_nsec = nsec % 1000000000;
+	    return 0;
+	}
+#endif
+    case CLOCK_REALTIME:
+	{
+	    struct timeval tv;
+
+	    gettimeofday(&tv, NULL);
+	    ts->tv_sec = tv.tv_sec;
+	    ts->tv_nsec = tv.tv_usec * 1000;
+	    return 0;
+	}
+    default:
+	errno = EINVAL;
+	return -1;
+    }
+}
+
+#endif /* !HAVE_CLOCK_GETTIME */