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@@ -23,6 +23,7 @@ const char compat_c_id[] = "$Id$";
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#ifdef MS_WINDOWS
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#include <process.h>
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+
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#endif
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#ifdef HAVE_UNAME
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#include <sys/utsname.h>
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@@ -819,7 +820,27 @@ spawn_exit()
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void
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tor_gettimeofday(struct timeval *timeval)
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{
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-#ifdef HAVE_GETTIMEOFDAY
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+#ifdef MS_WINDOWS
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+ /* Epoch bias copied from perl: number of units between windows epoch and
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+ * unix epoch. */
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+#define EPOCH_BIAS U64_LITERAL(116444736000000000)
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+#define UNITS_PER_SEC U64_LITERAL(10000000)
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+#define USEC_PER_SEC U64_LITERAL(1000000)
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+#define UNITS_PER_USEC U64_LITERAL(10)
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+ union {
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+ uint64_t ft_64;
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+ FILETIME ft_ft;
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+ } ft;
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+ /* number of 100-nsec units since Jan 1, 1601 */
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+ GetSystemTimeAsFileTime(&ft.ft_ft);
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+ if (ft.ft_64 < EPOCH_BIAS) {
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+ log_fn(LOG_ERR, "System time is before 1970; failing.");
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+ exit(1);
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+ }
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+ ft.ft_64 -= EPOCH_BIAS;
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+ tv->tv_sec = ft.ft_64 / UNITS_PER_SEC;
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+ tv->tv_usec = (ft.ft_64 / UNITS_PER_USEC) % USEC_PER_SEC;
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+#elif defined(HAVE_GETTIMEOFDAY)
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if (gettimeofday(timeval, NULL)) {
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log_fn(LOG_ERR, "gettimeofday failed.");
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/* If gettimeofday dies, we have either given a bad timezone (we didn't),
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Nick Mathewson