static int setFilenamePossiblyWithPid(const char *Filename) {
#define MAX_PID_SIZE 16
char PidChars[MAX_PID_SIZE] = {0};
int NumPids = 0, PidLength = 0;
char *Allocated;
int I, J;
/* Reset filename on NULL, except with env var which is checked by caller. */
if (!Filename) {
resetFilenameToDefault();
return 0;
}
/* Check the filename for "%p", which indicates a pid-substitution. */
for (I = 0; Filename[I]; ++I)
if (Filename[I] == '%' && Filename[++I] == 'p')
if (!NumPids++) {
PidLength = snprintf(PidChars, MAX_PID_SIZE, "%d", getpid());
if (PidLength <= 0)
return -1;
}
if (!NumPids) {
setFilename(Filename, 0);
return 0;
}
/* Allocate enough space for the substituted filename. */
Allocated = malloc(I + NumPids*(PidLength - 2) + 1);
if (!Allocated)
return -1;
/* Construct the new filename. */
for (I = 0, J = 0; Filename[I]; ++I)
if (Filename[I] == '%') {
if (Filename[++I] == 'p') {
memcpy(Allocated + J, PidChars, PidLength);
J += PidLength;
}
/* Drop any unknown substitutions. */
} else
Allocated[J++] = Filename[I];
Allocated[J] = 0;
/* Use the computed name. */
setFilename(Allocated, 1);
return 0;
}
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();
}
static void setFilenameAutomatically(void) {
if (!setFilenameFromEnvironment())
return;
resetFilenameToDefault();
}
