Magic-Mirror/gecko-dev
1
0
Fork 0
mirror of https://github.com/mozilla/gecko-dev.git synced 2024-10-13 21:35:39 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Bug 1440824 - Move some code around. r=froydnj

Browse Source 
MozReview-Commit-ID: 4uMktcaYwWW
This commit is contained in:
Bobby Holley 2018-02-23 15:53:17 -08:00
parent 1f48e9c16c
commit 1a54fdfd7a
1 changed files with 16 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
xpcom/ds/nsAtomTable.cpp
View File

@ -246,6 +246,10 @@ struct AtomTableEntry : public PLDHashEntryHdr
nsAtom* MOZ_NON_OWNING_REF mAtom;
};
#define RECENTLY_USED_MAIN_THREAD_ATOM_CACHE_SIZE 31
static nsAtom*
sRecentlyUsedMainThreadAtoms[RECENTLY_USED_MAIN_THREAD_ATOM_CACHE_SIZE] = {};
static PLDHashNumber
AtomTableGetHash(const void* aKey)
{
@ -296,11 +300,18 @@ static const PLDHashTableOps AtomTableOps = {
AtomTableInitEntry
};
//----------------------------------------------------------------------
#define RECENTLY_USED_MAIN_THREAD_ATOM_CACHE_SIZE 31
static nsAtom*
sRecentlyUsedMainThreadAtoms[RECENTLY_USED_MAIN_THREAD_ATOM_CACHE_SIZE] = {};
// The atom table very quickly gets 10,000+ entries in it (or even 100,000+).
// But choosing the best initial length has some subtleties: we add ~2700
// static atoms to the table at start-up, and then we start adding and removing
// dynamic atoms. If we make the table too big to start with, when the first
// dynamic atom gets removed the load factor will be < 25% and so we will
// shrink it to 4096 entries.
//
// By choosing an initial length of 4096, we get an initial capacity of 8192.
// That's the biggest initial capacity that will let us be > 25% full when the
// first dynamic atom is removed (when the count is ~2700), thus avoiding any
// shrinking.
#define ATOM_HASHTABLE_INITIAL_LENGTH 4096
void
nsAtomFriend::GCAtomTableLocked(const MutexAutoLock& aProofOfLock, GCKind aKind)
@ -470,19 +481,6 @@ static StaticAtomTable* gStaticAtomTable = nullptr;
*/
static bool gStaticAtomTableSealed = false;
// The atom table very quickly gets 10,000+ entries in it (or even 100,000+).
// But choosing the best initial length has some subtleties: we add ~2700
// static atoms to the table at start-up, and then we start adding and removing
// dynamic atoms. If we make the table too big to start with, when the first
// dynamic atom gets removed the load factor will be < 25% and so we will
// shrink it to 4096 entries.
//
// By choosing an initial length of 4096, we get an initial capacity of 8192.
// That's the biggest initial capacity that will let us be > 25% full when the
// first dynamic atom is removed (when the count is ~2700), thus avoiding any
// shrinking.
#define ATOM_HASHTABLE_INITIAL_LENGTH 4096
class DefaultAtoms
{
public: