blob: 4a88a03580941eecf19b75868f9ada43f587939b [file] [log] [blame]
/*===- InstrProfilingUtil.h - Support library for PGO instrumentation -----===*\
|* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|* See for license information.
|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#include <inttypes.h>
#include <stddef.h>
#include <stdio.h>
/*! \brief Create a directory tree. */
void __llvm_profile_recursive_mkdir(char *Pathname);
/*! Set the mode used when creating profile directories. */
void __llvm_profile_set_dir_mode(unsigned Mode);
/*! Return the directory creation mode. */
unsigned __llvm_profile_get_dir_mode(void);
int lprofLockFd(int fd);
int lprofUnlockFd(int fd);
int lprofLockFileHandle(FILE *F);
int lprofUnlockFileHandle(FILE *F);
/*! Open file \c Filename for read+write with write
* lock for exclusive access. The caller will block
* if the lock is already held by another process. */
FILE *lprofOpenFileEx(const char *Filename);
/* PS4 doesn't have setenv/getenv/fork. Define a shim. */
#if __ORBIS__
#include <sys/types.h>
static inline char *getenv(const char *name) { return NULL; }
static inline int setenv(const char *name, const char *value, int overwrite)
{ return 0; }
static pid_t fork() { return -1; }
#endif /* #if __ORBIS__ */
/* Return the path prefix specified by GCOV_PREFIX environment variable.
* If GCOV_PREFIX_STRIP is also specified, the strip level (integer value)
* is returned via \c *PrefixStrip. The prefix length is stored in *PrefixLen.
const char *lprofGetPathPrefix(int *PrefixStrip, size_t *PrefixLen);
/* Apply the path prefix specified in \c Prefix to path string in \c PathStr,
* and store the result to buffer pointed to by \c Buffer. If \c PrefixStrip
* is not zero, path prefixes are stripped from \c PathStr (the level of
* stripping is specified by \c PrefixStrip) before \c Prefix is added.
void lprofApplyPathPrefix(char *Dest, const char *PathStr, const char *Prefix,
size_t PrefixLen, int PrefixStrip);
/* Returns a pointer to the first occurrence of \c DIR_SEPARATOR char in
* the string \c Path, or NULL if the char is not found. */
const char *lprofFindFirstDirSeparator(const char *Path);
/* Returns a pointer to the last occurrence of \c DIR_SEPARATOR char in
* the string \c Path, or NULL if the char is not found. */
const char *lprofFindLastDirSeparator(const char *Path);
int lprofGetHostName(char *Name, int Len);
unsigned lprofBoolCmpXchg(void **Ptr, void *OldV, void *NewV);
void *lprofPtrFetchAdd(void **Mem, long ByteIncr);
/* Temporarily suspend SIGKILL. Return value of 1 means a restore is needed.
* Other return values mean no restore is needed.
int lprofSuspendSigKill();
/* Restore previously suspended SIGKILL. */
void lprofRestoreSigKill();
static inline size_t lprofRoundUpTo(size_t x, size_t boundary) {
return (x + boundary - 1) & ~(boundary - 1);
static inline size_t lprofRoundDownTo(size_t x, size_t boundary) {
return x & ~(boundary - 1);
int lprofReleaseMemoryPagesToOS(uintptr_t Begin, uintptr_t End);