diff options
| author | Rong Xu <xur@google.com> | 2017-03-17 18:41:33 +0000 |
|---|---|---|
| committer | Rong Xu <xur@google.com> | 2017-03-17 18:41:33 +0000 |
| commit | 4fdab5b726a155dd3da614734caa6ba69f2ee80c (patch) | |
| tree | 9d9de6fd89d5ec9c612a2f495967880c351bbcc9 /lib/profile/InstrProfilingFile.c | |
| parent | 7e119a30d6b3f35ee22db8a8d7d6839c4c481a29 (diff) | |
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.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@298113 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/profile/InstrProfilingFile.c')
| -rw-r--r-- | lib/profile/InstrProfilingFile.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/profile/InstrProfilingFile.c b/lib/profile/InstrProfilingFile.c index cd3590e12..dfcbe52d7 100644 --- a/lib/profile/InstrProfilingFile.c +++ b/lib/profile/InstrProfilingFile.c @@ -530,6 +530,7 @@ int __llvm_profile_write_file(void) { 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 @@ int __llvm_profile_write_file(void) { 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; } |