[Profile] introduce reusable internal interfaces to find dir separator \NFC

llvm-svn: 276027

compiler-rt/lib/profile/InstrProfilingFile.c

@@ -229,11 +229,7 @@ static void truncateCurrentFile(void) {
     return;
 
   /* Create the directory holding the file, if needed. */
-  if (strchr(Filename, DIR_SEPARATOR)
-#if defined(DIR_SEPARATOR_2)
-      || strchr(Filename, DIR_SEPARATOR_2)
-#endif
-          ) {
+  if (lprofFindFirstDirSeparator(Filename)) {
     char *Copy = (char *)COMPILER_RT_ALLOCA(Length + 1);
     strncpy(Copy, Filename, Length + 1);
     __llvm_profile_recursive_mkdir(Copy);

compiler-rt/lib/profile/InstrProfilingUtil.c

@@ -184,3 +184,26 @@ lprofApplyPathPrefix(char *Dest, const char *PathStr, const char *Prefix,
 
   memcpy(Dest + PrefixLen, StrippedPathStr, strlen(StrippedPathStr) + 1);
 }
+
+COMPILER_RT_VISIBILITY const char *
+lprofFindFirstDirSeparator(const char *Path) {
+  const char *Sep;
+  Sep = strchr(Path, DIR_SEPARATOR);
+  if (Sep)
+    return Sep;
+#if defined(DIR_SEPARATOR_2)
+  Sep = strchr(Path, DIR_SEPARATOR_2);
+#endif
+  return Sep;
+}
+
+COMPILER_RT_VISIBILITY const char *lprofFindLastDirSeparator(const char *Path) {
+  const char *Sep;
+  Sep = strrchr(Path, DIR_SEPARATOR);
+  if (Sep)
+    return Sep;
+#if defined(DIR_SEPARATOR_2)
+  Sep = strrchr(Path, DIR_SEPARATOR_2);
+#endif
+  return Sep;
+}

compiler-rt/lib/profile/InstrProfilingUtil.h

@@ -39,6 +39,13 @@ const char *lprofGetPathPrefix(int *PrefixStrip, size_t *PrefixLen);
 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);