forked from OSchip/llvm-project
108 lines
3.3 KiB
C
108 lines
3.3 KiB
C
/*===- InstrProfiling.h- Support library for PGO instrumentation ----------===*\
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|*
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|* The LLVM Compiler Infrastructure
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|*
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|* This file is distributed under the University of Illinois Open Source
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|* License. See LICENSE.TXT for details.
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|*
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\*===----------------------------------------------------------------------===*/
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#ifndef PROFILE_INSTRPROFILING_H_
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#define PROFILE_INSTRPROFILING_H_
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#if defined(__FreeBSD__) && defined(__i386__)
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/* System headers define 'size_t' incorrectly on x64 FreeBSD (prior to
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* FreeBSD 10, r232261) when compiled in 32-bit mode.
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*/
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#define PRIu64 "llu"
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typedef unsigned int uint32_t;
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typedef unsigned long long uint64_t;
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typedef uint32_t uintptr_t;
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#else /* defined(__FreeBSD__) && defined(__i386__) */
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#include <inttypes.h>
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#include <stdint.h>
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#endif /* defined(__FreeBSD__) && defined(__i386__) */
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#define PROFILE_HEADER_SIZE 7
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typedef struct __llvm_profile_data {
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const uint32_t NameSize;
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const uint32_t NumCounters;
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const uint64_t FuncHash;
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const char *const Name;
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uint64_t *const Counters;
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} __llvm_profile_data;
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/*!
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* \brief Get required size for profile buffer.
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*/
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uint64_t __llvm_profile_get_size_for_buffer(void);
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/*!
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* \brief Write instrumentation data to the given buffer.
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*
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* \pre \c Buffer is the start of a buffer at least as big as \a
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* __llvm_profile_get_size_for_buffer().
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*/
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int __llvm_profile_write_buffer(char *Buffer);
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const __llvm_profile_data *__llvm_profile_begin_data(void);
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const __llvm_profile_data *__llvm_profile_end_data(void);
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const char *__llvm_profile_begin_names(void);
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const char *__llvm_profile_end_names(void);
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uint64_t *__llvm_profile_begin_counters(void);
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uint64_t *__llvm_profile_end_counters(void);
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/*!
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* \brief Write instrumentation data to the current file.
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*
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* Writes to the file with the last name given to \a __llvm_profile_set_filename(),
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* or if it hasn't been called, the \c LLVM_PROFILE_FILE environment variable,
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* or if that's not set, the last name given to
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* \a __llvm_profile_override_default_filename(), or if that's not set,
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* \c "default.profraw".
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*/
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int __llvm_profile_write_file(void);
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/*!
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* \brief Set the filename for writing instrumentation data.
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*
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* Sets the filename to be used for subsequent calls to
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* \a __llvm_profile_write_file().
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*
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* \c Name is not copied, so it must remain valid. Passing NULL resets the
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* filename logic to the default behaviour.
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*/
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void __llvm_profile_set_filename(const char *Name);
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/*!
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* \brief Set the filename for writing instrumentation data, unless the
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* \c LLVM_PROFILE_FILE environment variable was set.
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*
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* Unless overridden, sets the filename to be used for subsequent calls to
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* \a __llvm_profile_write_file().
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*
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* \c Name is not copied, so it must remain valid. Passing NULL resets the
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* filename logic to the default behaviour (unless the \c LLVM_PROFILE_FILE
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* was set in which case it has no effect).
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*/
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void __llvm_profile_override_default_filename(const char *Name);
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/*! \brief Register to write instrumentation data to file at exit. */
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int __llvm_profile_register_write_file_atexit(void);
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/*! \brief Initialize file handling. */
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void __llvm_profile_initialize_file(void);
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/*! \brief Get the magic token for the file format. */
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uint64_t __llvm_profile_get_magic(void);
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/*! \brief Get the version of the file format. */
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uint64_t __llvm_profile_get_version(void);
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#endif /* PROFILE_INSTRPROFILING_H_ */
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