Resubmit r295469 [PGO] Suspend SIGKILL for PR_SET_PDEATHSIG in profile-write
And also r295364 [PGO] remove unintended debug trace. NFC
I removed the test case: it's hard to write synchronized test b/w processes
in this framework. I will revisit the test-case later.
llvm-svn: 298113
diff --git a/compiler-rt/lib/profile/InstrProfilingFile.c b/compiler-rt/lib/profile/InstrProfilingFile.c
index cd3590e..dfcbe52 100644
--- a/compiler-rt/lib/profile/InstrProfilingFile.c
+++ b/compiler-rt/lib/profile/InstrProfilingFile.c
@@ -530,6 +530,7 @@
int rc, Length;
const char *Filename;
char *FilenameBuf;
+ int PDeathSig = 0;
if (lprofProfileDumped()) {
PROF_NOTE("Profile data not written to file: %s.\n",
@@ -556,10 +557,18 @@
return -1;
}
+ // Temporarily suspend getting SIGKILL when the parent exits.
+ PDeathSig = lprofSuspendSigKill();
+
/* Write profile data to the file. */
rc = writeFile(Filename);
if (rc)
PROF_ERR("Failed to write file \"%s\": %s\n", Filename, strerror(errno));
+
+ // Restore SIGKILL.
+ if (PDeathSig == 1)
+ lprofRestoreSigKill();
+
return rc;
}