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[Stats] Warn on failure-to-write stats / trace files.

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This commit is contained in:
Graydon Hoare
2017-10-05 19:06:06 -04:00
parent b954f99220
commit 5d08866e56
2 changed files with 12 additions and 2 deletions
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10
lib/Basic/Statistic.cpp
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@@ -361,8 +361,11 @@ UnifiedStatsReporter::~UnifiedStatsReporter()
std::error_code EC;
raw_fd_ostream ostream(StatsFilename, EC, fs::F_Append | fs::F_Text);
if (EC)
if (EC) {
llvm::errs() << "Error opening -stats-output-dir file '"
<< TraceFilename << "' for writing\n";
return;
}
// We change behavior here depending on whether -DLLVM_ENABLE_STATS and/or
// assertions were on in this build; this is somewhat subtle, but turning on
@@ -387,8 +390,11 @@ UnifiedStatsReporter::~UnifiedStatsReporter()
if (LastTracedFrontendCounters && SourceMgr) {
std::error_code EC;
raw_fd_ostream tstream(TraceFilename, EC, fs::F_Append | fs::F_Text);
if (EC)
if (EC) {
llvm::errs() << "Error opening -trace-stats-events file '"
<< TraceFilename << "' for writing\n";
return;
}
tstream << "Time,Live,IsEntry,EventName,CounterName,"
<< "CounterDelta,CounterValue,SourceRange\n";
for (auto const &E : FrontendStatsEvents) {