NS_DECL_THREADSAFE_ISUPPORTS
NS_IMETHOD CollectReports(nsIMemoryReporterCallback *aCallback,
nsISupports *aClosure)
{
typedef nsDOMMemoryFile::DataOwner DataOwner;
StaticMutexAutoLock lock(DataOwner::sDataOwnerMutex);
if (!DataOwner::sDataOwners) {
return NS_OK;
}
const size_t LARGE_OBJECT_MIN_SIZE = 8 * 1024;
size_t smallObjectsTotal = 0;
for (DataOwner *owner = DataOwner::sDataOwners->getFirst();
owner; owner = owner->getNext()) {
size_t size = DOMMemoryFileDataOwnerMallocSizeOf(owner->mData);
if (size < LARGE_OBJECT_MIN_SIZE) {
smallObjectsTotal += size;
}
else {
SHA1Sum sha1;
sha1.update(owner->mData, owner->mLength);
uint8_t digest[SHA1Sum::HashSize]; // SHA1 digests are 20 bytes long.
sha1.finish(digest);
nsAutoCString digestString;
for (size_t i = 0; i < sizeof(digest); i++) {
digestString.AppendPrintf("%02x", digest[i]);
}
nsresult rv = aCallback->Callback(
/* process */ NS_LITERAL_CSTRING(""),
nsPrintfCString(
"explicit/dom/memory-file-data/large/file(length=%llu, sha1=%s)",
owner->mLength, digestString.get()),
KIND_HEAP, UNITS_BYTES, size,
nsPrintfCString(
"Memory used to back a memory file of length %llu bytes. The file "
"has a sha1 of %s.\n\n"
"Note that the allocator may round up a memory file's length -- "
"that is, an N-byte memory file may take up more than N bytes of "
"memory.",
owner->mLength, digestString.get()),
aClosure);
NS_ENSURE_SUCCESS(rv, rv);
}
}
if (smallObjectsTotal > 0) {
nsresult rv = aCallback->Callback(
/* process */ NS_LITERAL_CSTRING(""),
NS_LITERAL_CSTRING("explicit/dom/memory-file-data/small"),
KIND_HEAP, UNITS_BYTES, smallObjectsTotal,
nsPrintfCString(
"Memory used to back small memory files (less than %d bytes each).\n\n"
"Note that the allocator may round up a memory file's length -- "
"that is, an N-byte memory file may take up more than N bytes of "
"memory."),
aClosure);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
NS_DECL_THREADSAFE_ISUPPORTS
NS_IMETHOD CollectReports(nsIHandleReportCallback* aHandleReport,
nsISupports* aData, bool aAnonymize) override
{
typedef BlobImplMemory::DataOwner DataOwner;
StaticMutexAutoLock lock(DataOwner::sDataOwnerMutex);
if (!DataOwner::sDataOwners) {
return NS_OK;
}
const size_t LARGE_OBJECT_MIN_SIZE = 8 * 1024;
size_t smallObjectsTotal = 0;
for (DataOwner *owner = DataOwner::sDataOwners->getFirst();
owner; owner = owner->getNext()) {
size_t size = MemoryFileDataOwnerMallocSizeOf(owner->mData);
if (size < LARGE_OBJECT_MIN_SIZE) {
smallObjectsTotal += size;
} else {
SHA1Sum sha1;
sha1.update(owner->mData, owner->mLength);
uint8_t digest[SHA1Sum::kHashSize]; // SHA1 digests are 20 bytes long.
sha1.finish(digest);
nsAutoCString digestString;
for (size_t i = 0; i < sizeof(digest); i++) {
digestString.AppendPrintf("%02x", digest[i]);
}
aHandleReport->Callback(
/* process */ NS_LITERAL_CSTRING(""),
nsPrintfCString(
"explicit/dom/memory-file-data/large/file(length=%llu, sha1=%s)",
owner->mLength, aAnonymize ? "<anonymized>" : digestString.get()),
KIND_HEAP, UNITS_BYTES, size,
nsPrintfCString(
"Memory used to back a memory file of length %llu bytes. The file "
"has a sha1 of %s.\n\n"
"Note that the allocator may round up a memory file's length -- "
"that is, an N-byte memory file may take up more than N bytes of "
"memory.",
owner->mLength, digestString.get()),
aData);
}
}
if (smallObjectsTotal > 0) {
aHandleReport->Callback(
/* process */ NS_LITERAL_CSTRING(""),
NS_LITERAL_CSTRING("explicit/dom/memory-file-data/small"),
KIND_HEAP, UNITS_BYTES, smallObjectsTotal,
nsPrintfCString(
"Memory used to back small memory files (i.e. those taking up less "
"than %zu bytes of memory each).\n\n"
"Note that the allocator may round up a memory file's length -- "
"that is, an N-byte memory file may take up more than N bytes of "
"memory.", LARGE_OBJECT_MIN_SIZE),
aData);
}
return NS_OK;
}
