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LibJS: Update mmap name after recycling a HeapBlock :^)

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Fixes #7507.
This commit is contained in:
Andreas Kling 2021-05-27 21:23:56 +02:00
parent 58bc10b947
commit b8fd845885
1 changed files with 10 additions and 2 deletions
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12
Userland/Libraries/LibJS/Heap/BlockAllocator.cpp
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@ -33,8 +33,16 @@ BlockAllocator::~BlockAllocator()
void* BlockAllocator::allocate_block([[maybe_unused]] char const* name) void* BlockAllocator::allocate_block([[maybe_unused]] char const* name)
{ {
if (!m_blocks.is_empty()) if (!m_blocks.is_empty()) {
return m_blocks.take_last(); auto* block = m_blocks.take_last();
#ifdef __serenity__
if (set_mmap_name(block, HeapBlock::block_size, name) < 0) {
perror("set_mmap_name");
VERIFY_NOT_REACHED();
}
#endif
return block;
}
#ifdef __serenity__ #ifdef __serenity__
auto* block = (HeapBlock*)serenity_mmap(nullptr, HeapBlock::block_size, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_RANDOMIZED | MAP_PRIVATE, 0, 0, HeapBlock::block_size, name); auto* block = (HeapBlock*)serenity_mmap(nullptr, HeapBlock::block_size, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_RANDOMIZED | MAP_PRIVATE, 0, 0, HeapBlock::block_size, name);