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 <stddef.h> 13 #include <stdio.h> 14 15 /*! \brief Create a directory tree. */ 16 void __llvm_profile_recursive_mkdir(char *Pathname); 17 18 /*! Set the mode used when creating profile directories. */ 19 void __llvm_profile_set_dir_mode(unsigned Mode); 20 21 /*! Return the directory creation mode. */ 22 unsigned __llvm_profile_get_dir_mode(void); 23 24 int lprofLockFd(int fd); 25 int lprofUnlockFd(int fd); 26 int lprofLockFileHandle(FILE *F); 27 int lprofUnlockFileHandle(FILE *F); 28 29 /*! Open file \c Filename for read+write with write 30 * lock for exclusive access. The caller will block 31 * if the lock is already held by another process. */ 32 FILE *lprofOpenFileEx(const char *Filename); 33 /* PS4 doesn't have getenv. Define a shim. */ 34 #if __ORBIS__ 35 static inline char *getenv(const char *name) { return NULL; } 36 #endif /* #if __ORBIS__ */ 37 38 /* GCOV_PREFIX and GCOV_PREFIX_STRIP support */ 39 /* Return the path prefix specified by GCOV_PREFIX environment variable. 40 * If GCOV_PREFIX_STRIP is also specified, the strip level (integer value) 41 * is returned via \c *PrefixStrip. The prefix length is stored in *PrefixLen. 42 */ 43 const char *lprofGetPathPrefix(int *PrefixStrip, size_t *PrefixLen); 44 /* Apply the path prefix specified in \c Prefix to path string in \c PathStr, 45 * and store the result to buffer pointed to by \c Buffer. If \c PrefixStrip 46 * is not zero, path prefixes are stripped from \c PathStr (the level of 47 * stripping is specified by \c PrefixStrip) before \c Prefix is added. 48 */ 49 void lprofApplyPathPrefix(char *Dest, const char *PathStr, const char *Prefix, 50 size_t PrefixLen, int PrefixStrip); 51 52 /* Returns a pointer to the first occurrence of \c DIR_SEPARATOR char in 53 * the string \c Path, or NULL if the char is not found. */ 54 const char *lprofFindFirstDirSeparator(const char *Path); 55 /* Returns a pointer to the last occurrence of \c DIR_SEPARATOR char in 56 * the string \c Path, or NULL if the char is not found. */ 57 const char *lprofFindLastDirSeparator(const char *Path); 58 59 int lprofGetHostName(char *Name, int Len); 60 61 unsigned lprofBoolCmpXchg(void **Ptr, void *OldV, void *NewV); 62 void *lprofPtrFetchAdd(void **Mem, long ByteIncr); 63 64 /* Temporarily suspend SIGKILL. Return value of 1 means a restore is needed. 65 * Other return values mean no restore is needed. 66 */ 67 int lprofSuspendSigKill(); 68 69 /* Restore previously suspended SIGKILL. */ 70 void lprofRestoreSigKill(); 71 72 #endif /* PROFILE_INSTRPROFILINGUTIL_H */ 73