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[XRay] [compiler-rt] Move machine-dependent code into machine-depende…
…nt files Reapply r290077. Authors: pelikan Differential Revision: https://reviews.llvm.org/D27979 llvm-svn: 290330
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//===-- xray_emulate_tsc.h --------------------------------------*- C++ -*-===// | ||
// | ||
// The LLVM Compiler Infrastructure | ||
// | ||
// This file is distributed under the University of Illinois Open Source | ||
// License. See LICENSE.TXT for details. | ||
// | ||
//===----------------------------------------------------------------------===// | ||
// | ||
// This file is a part of XRay, a dynamic runtime instrumentation system. | ||
// | ||
//===----------------------------------------------------------------------===// | ||
#ifndef XRAY_EMULATE_TSC_H | ||
#define XRAY_EMULATE_TSC_H | ||
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#include "sanitizer_common/sanitizer_common.h" | ||
#include "sanitizer_common/sanitizer_internal_defs.h" | ||
#include "xray_defs.h" | ||
#include <cerrno> | ||
#include <cstdint> | ||
#include <time.h> | ||
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namespace __xray { | ||
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static constexpr uint64_t NanosecondsPerSecond = 1000ULL * 1000 * 1000; | ||
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ALWAYS_INLINE uint64_t readTSC(uint8_t &CPU) XRAY_NEVER_INSTRUMENT { | ||
timespec TS; | ||
int result = clock_gettime(CLOCK_REALTIME, &TS); | ||
if (result != 0) { | ||
Report("clock_gettime(2) returned %d, errno=%d.", result, int(errno)); | ||
TS.tv_sec = 0; | ||
TS.tv_nsec = 0; | ||
} | ||
CPU = 0; | ||
return TS.tv_sec * NanosecondsPerSecond + TS.tv_nsec; | ||
} | ||
} | ||
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#endif // XRAY_EMULATE_TSC_H |
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