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Bug 1874022 - pt 13. Inline the hot path for free r=glandium

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Differential Revision: https://phabricator.services.mozilla.com/D214778
This commit is contained in:
Paul Bone 2024-06-26 02:06:42 +00:00
parent f35b220ed9
commit 29a4b0695d
1 changed files with 15 additions and 16 deletions
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29
memory/build/PHC.cpp
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@ -1649,18 +1649,8 @@ inline void* MozJemallocPHC::realloc(void* aOldPtr, size_t aNewSize) {
}
// This handles both free and moz_arena_free.
MOZ_ALWAYS_INLINE static bool MaybePageFree(const Maybe<arena_id_t>& aArenaId,
void* aPtr) {
if (!maybe_init()) {
return false;
}
static void DoPageFree(const Maybe<arena_id_t>& aArenaId, void* aPtr) {
PtrKind pk = PHC::sRegion->PtrKind(aPtr);
if (pk.IsNothing()) {
// Not a page allocation.
return false;
}
if (pk.IsGuardPage()) {
PHC::CrashOnGuardPage(aPtr);
}
@ -1696,18 +1686,27 @@ MOZ_ALWAYS_INLINE static bool MaybePageFree(const Maybe<arena_id_t>& aArenaId,
LOG("PageFree(%p[%zu]), %zu delay, reuse at ~%zu, fullness %zu/%zu/%zu\n",
aPtr, index, size_t(reuseDelay), size_t(PHC::Now()) + reuseDelay,
stats.mSlotsAllocated, stats.mSlotsFreed, kNumAllocPages);
}
return true;
MOZ_ALWAYS_INLINE static bool FastIsPHCPtr(void* aPtr) {
if (MOZ_UNLIKELY(!maybe_init())) {
return false;
}
PtrKind pk = PHC::sRegion->PtrKind(aPtr);
return !pk.IsNothing();
}
MOZ_ALWAYS_INLINE static void PageFree(const Maybe<arena_id_t>& aArenaId,
void* aPtr) {
bool res = MaybePageFree(aArenaId, aPtr);
if (!res) {
if (MOZ_UNLIKELY(FastIsPHCPtr(aPtr))) {
DoPageFree(aArenaId, aPtr);
return;
}
aArenaId.isSome() ? MozJemalloc::moz_arena_free(*aArenaId, aPtr)
: MozJemalloc::free(aPtr);
}
}
inline void MozJemallocPHC::free(void* aPtr) { PageFree(Nothing(), aPtr); }