[Profile] Implement new API __llvm_profile_dump
The API is intended to be used by user to do fine
grained (per-region) control of profile dumping.
Differential Revision: http://reviews.llvm.org/D23106
llvm-svn: 278092
diff --git a/compiler-rt/lib/profile/InstrProfilingFile.c b/compiler-rt/lib/profile/InstrProfilingFile.c
index 70953ac..70102f3 100644
--- a/compiler-rt/lib/profile/InstrProfilingFile.c
+++ b/compiler-rt/lib/profile/InstrProfilingFile.c
@@ -522,6 +522,12 @@
const char *Filename;
char *FilenameBuf;
+ if (lprofProfileDumped()) {
+ PROF_NOTE("Profile data not written to file: %s.\n",
+ "already written");
+ return 0;
+ }
+
Length = getCurFilenameLength();
FilenameBuf = (char *)COMPILER_RT_ALLOCA(Length + 1);
Filename = getCurFilename(FilenameBuf);
@@ -548,6 +554,18 @@
return rc;
}
+COMPILER_RT_VISIBILITY
+int __llvm_profile_dump(void) {
+ if (!doMerging())
+ PROF_WARN("Later invocation of __llvm_profile_dump can lead to clobbering "
+ " of previously dumped profile data : %s. Either use \%m "
+ "in profile name or change profile name before dumping.\n",
+ "online profile merging is not on");
+ int rc = __llvm_profile_write_file();
+ lprofSetProfileDumped();
+ return rc;
+}
+
static void writeFileWithoutReturn(void) { __llvm_profile_write_file(); }
COMPILER_RT_VISIBILITY