static void setFilename(const char *Filename, int OwnsFilename) {
/* Check if this is a new filename and therefore needs truncation. */
int NewFile = !__llvm_profile_CurrentFilename ||
(Filename && strcmp(Filename, __llvm_profile_CurrentFilename));
if (__llvm_profile_OwnsFilename)
free(UNCONST(__llvm_profile_CurrentFilename));
__llvm_profile_CurrentFilename = Filename;
__llvm_profile_OwnsFilename = OwnsFilename;
/* If not a new file, append to support profiling multiple shared objects. */
if (NewFile)
truncateCurrentFile();
}
static void parseAndSetFilename(const char *FilenamePat,
ProfileNameSpecifier PNS) {
const char *OldFilenamePat = lprofCurFilename.FilenamePat;
ProfileNameSpecifier OldPNS = lprofCurFilename.PNS;
if (PNS < OldPNS)
return;
if (!FilenamePat)
FilenamePat = DefaultProfileName;
/* When -fprofile-instr-generate=<path> is specified on the
* command line, each module will be instrumented with runtime
* init call to __llvm_profile_init function which calls
* __llvm_profile_override_default_filename. In most of the cases,
* the path will be identical, so bypass the parsing completely.
*/
if (OldFilenamePat && !strcmp(OldFilenamePat, FilenamePat)) {
lprofCurFilename.PNS = PNS;
return;
}
/* When PNS >= OldPNS, the last one wins. */
if (!FilenamePat || parseFilenamePattern(FilenamePat))
resetFilenameToDefault();
lprofCurFilename.PNS = PNS;
if (!OldFilenamePat) {
PROF_NOTE("Set profile file path to \"%s\" via %s.\n",
lprofCurFilename.FilenamePat, getPNSStr(PNS));
} else {
PROF_NOTE("Override old profile path \"%s\" via %s to \"%s\" via %s.\n",
OldFilenamePat, getPNSStr(OldPNS), lprofCurFilename.FilenamePat,
getPNSStr(PNS));
}
if (!lprofCurFilename.MergePoolSize)
truncateCurrentFile();
}
