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--- third_party/abseil-cpp/absl/base/internal/sysinfo.cc.orig 2022-02-07 13:39:41 UTC
+++ third_party/abseil-cpp/absl/base/internal/sysinfo.cc
@@ -30,7 +30,7 @@
#include <sys/syscall.h>
#endif
-#if defined(__APPLE__) || defined(__FreeBSD__)
+#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__OpenBSD__)
#include <sys/sysctl.h>
#endif
@@ -308,9 +308,11 @@ static double GetNominalCPUFrequency() {
// a new mode (turbo mode). Essentially, those frequencies cannot
// always be relied upon. The same reasons apply to /proc/cpuinfo as
// well.
+#if !defined(__OpenBSD__) && !defined(__FreeBSD__) // pledge violation
if (ReadLongFromFile("/sys/devices/system/cpu/cpu0/tsc_freq_khz", &freq)) {
return freq * 1e3; // Value is kHz.
}
+#endif
#if defined(ABSL_INTERNAL_UNSCALED_CYCLECLOCK_FREQUENCY_IS_CPU_FREQUENCY)
// On these platforms, the TSC frequency is the nominal CPU
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