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#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include "util.h"
gchar *flx_get_host_name(void) {
char t[256];
gethostname(t, sizeof(t));
return g_strndup(t, sizeof(t));
}
gchar *flx_normalize_name(const gchar *s) {
size_t l;
g_assert(s);
l = strlen(s);
if (!l)
return g_strdup(".");
if (s[l-1] == '.')
return g_strdup(s);
return g_strdup_printf("%s.", s);
}
gint flx_timeval_compare(const GTimeVal *a, const GTimeVal *b) {
g_assert(a);
g_assert(b);
if (a->tv_sec < b->tv_sec)
return -1;
if (a->tv_sec > b->tv_sec)
return 1;
if (a->tv_usec < b->tv_usec)
return -1;
if (a->tv_usec > b->tv_usec)
return 1;
return 0;
}
glong flx_timeval_diff(const GTimeVal *a, const GTimeVal *b) {
g_assert(a);
g_assert(b);
g_assert(flx_timeval_compare(a, b) >= 0);
return (a->tv_sec - b->tv_sec)*1000000 + a->tv_usec - b->tv_usec;
}
gint flx_set_cloexec(gint fd) {
gint n;
g_assert(fd >= 0);
if ((n = fcntl(fd, F_GETFD)) < 0)
return -1;
if (n & FD_CLOEXEC)
return 0;
return fcntl(fd, F_SETFD, n|FD_CLOEXEC);
}
gint flx_set_nonblock(gint fd) {
gint n;
g_assert(fd >= 0);
if ((n = fcntl(fd, F_GETFL)) < 0)
return -1;
if (n & O_NONBLOCK)
return 0;
return fcntl(fd, F_SETFL, n|O_NONBLOCK);
}
gint flx_wait_for_write(gint fd) {
fd_set fds;
gint r;
FD_ZERO(&fds);
FD_SET(fd, &fds);
if ((r = select(fd+1, NULL, &fds, NULL, NULL)) < 0) {
g_message("select() failed: %s", strerror(errno));
return -1;
}
g_assert(r > 0);
return 0;
}
GTimeVal *flx_elapse_time(GTimeVal *tv, guint msec, guint jitter) {
g_assert(tv);
g_get_current_time(tv);
if (msec)
g_time_val_add(tv, msec*1000);
if (jitter)
g_time_val_add(tv, g_random_int_range(0, jitter) * 1000);
return tv;
}
gint flx_age(const GTimeVal *a) {
GTimeVal now;
g_assert(a);
g_get_current_time(&now);
return flx_timeval_diff(&now, a);
}
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