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 setenv/getenv/fork. Define a shim. */ 34 #if __ORBIS__ 35 #include <sys/types.h> 36 static inline char *getenv(const char *name) { return NULL; } 37 static inline int setenv(const char *name, const char *value, int overwrite) 38 { return 0; } 39 static pid_t fork() { return -1; } 40 #endif /* #if __ORBIS__ */ 41 42 /* GCOV_PREFIX and GCOV_PREFIX_STRIP support */ 43 /* Return the path prefix specified by GCOV_PREFIX environment variable. 44 * If GCOV_PREFIX_STRIP is also specified, the strip level (integer value) 45 * is returned via \c *PrefixStrip. The prefix length is stored in *PrefixLen. 46 */ 47 const char *lprofGetPathPrefix(int *PrefixStrip, size_t *PrefixLen); 48 /* Apply the path prefix specified in \c Prefix to path string in \c PathStr, 49 * and store the result to buffer pointed to by \c Buffer. If \c PrefixStrip 50 * is not zero, path prefixes are stripped from \c PathStr (the level of 51 * stripping is specified by \c PrefixStrip) before \c Prefix is added. 52 */ 53 void lprofApplyPathPrefix(char *Dest, const char *PathStr, const char *Prefix, 54 size_t PrefixLen, int PrefixStrip); 55 56 /* Returns a pointer to the first occurrence of \c DIR_SEPARATOR char in 57 * the string \c Path, or NULL if the char is not found. */ 58 const char *lprofFindFirstDirSeparator(const char *Path); 59 /* Returns a pointer to the last occurrence of \c DIR_SEPARATOR char in 60 * the string \c Path, or NULL if the char is not found. */ 61 const char *lprofFindLastDirSeparator(const char *Path); 62 63 int lprofGetHostName(char *Name, int Len); 64 65 unsigned lprofBoolCmpXchg(void **Ptr, void *OldV, void *NewV); 66 void *lprofPtrFetchAdd(void **Mem, long ByteIncr); 67 68 /* Temporarily suspend SIGKILL. Return value of 1 means a restore is needed. 69 * Other return values mean no restore is needed. 70 */ 71 int lprofSuspendSigKill(); 72 73 /* Restore previously suspended SIGKILL. */ 74 void lprofRestoreSigKill(); 75 76 #endif /* PROFILE_INSTRPROFILINGUTIL_H */ 77