Source code

Revision control

Copy as Markdown

Other Tools

// -*- mode: C++ -*-
{# The rendered source is autogenerated, but this
Jinja2 template is not. Please file bugs! #}
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at */
#include "mozilla/glean/bindings/GleanJSPingsLookup.h"
#include "mozilla/PerfectHash.h"
#include "nsString.h"
#include "mozilla/PerfectHash.h"
#define GLEAN_PING_INDEX_BITS ({{ping_index_bits}})
#define GLEAN_PING_ID(entry) ((entry) >> GLEAN_PING_INDEX_BITS)
#define GLEAN_PING_INDEX(entry) ((entry) & ((1UL << GLEAN_PING_INDEX_BITS) - 1))
namespace mozilla::glean {
// Contains the ping id and the index into the ping string table.
using ping_entry_t = uint32_t;
Maybe<uint32_t> ping_result_check(const nsACString& aKey, ping_entry_t aEntry);
{{ ping_string_table }}
{{ ping_by_name_lookup }}
* Get a ping's name given its entry from the PHF.
const char* GetPingName(ping_entry_t aEntry) {
uint32_t idx = GLEAN_PING_INDEX(aEntry);
MOZ_ASSERT(idx < sizeof(gPingStringTable), "Ping index larger than string table");
return &gPingStringTable[idx];
* Check if the found entry is pointing at the correct ping.
* PHF can false-positive a result when the key isn't present, so we check
* for a string match. If it fails, return Nothing(). If we found it,
* return the ping's id.
Maybe<uint32_t> ping_result_check(const nsACString& aKey, ping_entry_t aEntry) {
uint32_t idx = GLEAN_PING_INDEX(aEntry);
uint32_t id = GLEAN_PING_ID(aEntry);
if (MOZ_UNLIKELY(idx > sizeof(gPingStringTable))) {
return Nothing();
if (aKey.EqualsASCII(&gPingStringTable[idx])) {
return Some(id);
return Nothing();
} // namespace mozilla::glean