1/*===- InstrProfilingUtil.h - Support library for PGO instrumentation -----===*\ 2|* 3|* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4|* See https://llvm.org/LICENSE.txt for license information. 5|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6|* 7\*===----------------------------------------------------------------------===*/ 8 9#ifndef PROFILE_INSTRPROFILINGUTIL_H 10#define PROFILE_INSTRPROFILINGUTIL_H 11 12#include <inttypes.h> 13#include <stddef.h> 14#include <stdio.h> 15 16/*! \brief Create a directory tree. */ 17void __llvm_profile_recursive_mkdir(char *Pathname); 18 19/*! Set the mode used when creating profile directories. */ 20void __llvm_profile_set_dir_mode(unsigned Mode); 21 22/*! Return the directory creation mode. */ 23unsigned __llvm_profile_get_dir_mode(void); 24 25int lprofLockFd(int fd); 26int lprofUnlockFd(int fd); 27int lprofLockFileHandle(FILE *F); 28int lprofUnlockFileHandle(FILE *F); 29 30/*! Open file \c Filename for read+write with write 31 * lock for exclusive access. The caller will block 32 * if the lock is already held by another process. */ 33FILE *lprofOpenFileEx(const char *Filename); 34/* PS4 doesn't have setenv/getenv/fork. Define a shim. */ 35#if __ORBIS__ 36#include <sys/types.h> 37static inline char *getenv(const char *name) { return NULL; } 38static inline int setenv(const char *name, const char *value, int overwrite) 39{ return 0; } 40static pid_t fork() { return -1; } 41#endif /* #if __ORBIS__ */ 42 43/* GCOV_PREFIX and GCOV_PREFIX_STRIP support */ 44/* Return the path prefix specified by GCOV_PREFIX environment variable. 45 * If GCOV_PREFIX_STRIP is also specified, the strip level (integer value) 46 * is returned via \c *PrefixStrip. The prefix length is stored in *PrefixLen. 47 */ 48const char *lprofGetPathPrefix(int *PrefixStrip, size_t *PrefixLen); 49/* Apply the path prefix specified in \c Prefix to path string in \c PathStr, 50 * and store the result to buffer pointed to by \c Buffer. If \c PrefixStrip 51 * is not zero, path prefixes are stripped from \c PathStr (the level of 52 * stripping is specified by \c PrefixStrip) before \c Prefix is added. 53 */ 54void lprofApplyPathPrefix(char *Dest, const char *PathStr, const char *Prefix, 55 size_t PrefixLen, int PrefixStrip); 56 57/* Returns a pointer to the first occurrence of \c DIR_SEPARATOR char in 58 * the string \c Path, or NULL if the char is not found. */ 59const char *lprofFindFirstDirSeparator(const char *Path); 60/* Returns a pointer to the last occurrence of \c DIR_SEPARATOR char in 61 * the string \c Path, or NULL if the char is not found. */ 62const char *lprofFindLastDirSeparator(const char *Path); 63 64int lprofGetHostName(char *Name, int Len); 65 66unsigned lprofBoolCmpXchg(void **Ptr, void *OldV, void *NewV); 67void *lprofPtrFetchAdd(void **Mem, long ByteIncr); 68 69/* Temporarily suspend SIGKILL. Return value of 1 means a restore is needed. 70 * Other return values mean no restore is needed. 71 */ 72int lprofSuspendSigKill(); 73 74/* Restore previously suspended SIGKILL. */ 75void lprofRestoreSigKill(); 76 77static inline size_t lprofRoundUpTo(size_t x, size_t boundary) { 78 return (x + boundary - 1) & ~(boundary - 1); 79} 80 81static inline size_t lprofRoundDownTo(size_t x, size_t boundary) { 82 return x & ~(boundary - 1); 83} 84 85int lprofReleaseMemoryPagesToOS(uintptr_t Begin, uintptr_t End); 86 87#endif /* PROFILE_INSTRPROFILINGUTIL_H */ 88