1 files changed, 131 insertions, 0 deletions

diff --git a/src/utils.c b/src/utils.c
new file mode 100644
index 0000000..2cc5675
--- /dev/null
+++ b/src/utils.c
@@ -0,0 +1,131 @@
+/*
+ * utils.c
+ *
+ * Copyright (C) 2009 Hector Martin <hector@marcansoft.com>
+ * Copyright (C) 2009 Nikias Bassen <nikias@gmx.li>
+ * Copyright (c) 2013 Federico Mena Quintero
+ *
+ * This library is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 2.1 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <time.h>
+#include <sys/time.h>
+#include <errno.h>
+#ifdef __APPLE__
+#include <mach/mach_time.h>
+#endif
+
+#include "utils.h"
+
+#include "log.h"
+#define util_error(...) usbmuxd_log(LL_ERROR, __VA_ARGS__)
+
+void fdlist_create(struct fdlist *list)
+{
+        list->count = 0;
+        list->capacity = 4;
+        list->owners = malloc(sizeof(*list->owners) * list->capacity);
+        list->fds = malloc(sizeof(*list->fds) * list->capacity);
+}
+void fdlist_add(struct fdlist *list, enum fdowner owner, int fd, short events)
+{
+        if(list->count == list->capacity) {
+                list->capacity *= 2;
+                list->owners = realloc(list->owners, sizeof(*list->owners) * list->capacity);
+                list->fds = realloc(list->fds, sizeof(*list->fds) * list->capacity);
+        }
+        list->owners[list->count] = owner;
+        list->fds[list->count].fd = fd;
+        list->fds[list->count].events = events;
+        list->fds[list->count].revents = 0;
+        list->count++;
+}
+
+void fdlist_free(struct fdlist *list)
+{
+        list->count = 0;
+        list->capacity = 0;
+        free(list->owners);
+        list->owners = NULL;
+        free(list->fds);
+        list->fds = NULL;
+}
+
+void fdlist_reset(struct fdlist *list)
+{
+        list->count = 0;
+}
+
+#ifndef HAVE_CLOCK_GETTIME
+typedef int clockid_t;
+#define CLOCK_MONOTONIC 1
+
+static int clock_gettime(clockid_t clk_id, struct timespec *ts)
+{
+        // See http://developer.apple.com/library/mac/qa/qa1398
+
+        uint64_t mach_time, nano_sec;
+
+        static mach_timebase_info_data_t base_info;
+
+        mach_time = mach_absolute_time();
+
+        if (base_info.denom == 0) {
+                (void) mach_timebase_info(&base_info);
+        }
+
+        if (base_info.numer == 1 && base_info.denom == 1)
+                nano_sec = mach_time;
+        else
+                nano_sec = mach_time * base_info.numer / base_info.denom;
+
+        ts->tv_sec = nano_sec / 1000000000;
+        ts->tv_nsec = nano_sec % 1000000000;
+
+        return 0;
+}
+#endif
+
+void get_tick_count(struct timeval * tv)
+{
+        struct timespec ts;
+        if(0 == clock_gettime(CLOCK_MONOTONIC, &ts)) {
+                tv->tv_sec = ts.tv_sec;
+                tv->tv_usec = ts.tv_nsec / 1000;
+        } else {
+                gettimeofday(tv, NULL);
+        }
+}
+
+/**
+ * Get number of milliseconds since the epoch.
+ */
+uint64_t mstime64(void)
+{
+        struct timeval tv;
+        get_tick_count(&tv);
+
+        // Careful, avoid overflow on 32 bit systems
+        // time_t could be 4 bytes
+        return ((long long)tv.tv_sec) * 1000LL + ((long long)tv.tv_usec) / 1000LL;
+}