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Bug 1172157 - Save malformed profile JSON to file to help debug. (r=BenWa)

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This commit is contained in:
Shu-yu Guo 2015-06-08 12:21:58 -07:00
parent 0bd78f32c5
commit 58b59acb1b
1 changed files with 27 additions and 2 deletions
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29
tools/profiler/TableTicker.cpp
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@ -220,8 +220,33 @@ JSObject* TableTicker::ToJSObject(JSContext *aCx, float aSinceTime)
{
UniquePtr<char[]> buf = ToJSON(aSinceTime);
NS_ConvertUTF8toUTF16 js_string(nsDependentCString(buf.get()));
MOZ_ALWAYS_TRUE(JS_ParseJSON(aCx, static_cast<const char16_t*>(js_string.get()),
js_string.Length(), &val));
bool rv = JS_ParseJSON(aCx, static_cast<const char16_t*>(js_string.get()),
js_string.Length(), &val);
if (!rv) {
#ifdef NIGHTLY_BUILD
// XXXshu: Temporary code to help debug malformed JSON. See bug 1172157.
nsCOMPtr<nsIFile> path;
nsresult rv = NS_GetSpecialDirectory("TmpD", getter_AddRefs(path));
if (!NS_FAILED(rv)) {
rv = path->Append(NS_LITERAL_STRING("bad-profile.json"));
if (!NS_FAILED(rv)) {
nsCString cpath;
rv = path->GetNativePath(cpath);
if (!NS_FAILED(rv)) {
std::ofstream stream;
stream.open(cpath.get());
if (stream.is_open()) {
stream << buf.get();
stream.close();
printf_stderr("Malformed profiler JSON dumped to %s! "
"Please upload to https://bugzil.la/1172157\n",
cpath.get());
}
}
}
}
#endif
}
}
return &val.toObject();
}