Package org.lwjgl.system.jemalloc

Contains bindings to the jemalloc library.

See: Description

Interface Summary

Interface	Description
ChunkAllocI	Instances of this interface may be set to the ChunkHooks struct.
ChunkCommitI	Instances of this interface may be set to the ChunkHooks struct.
ChunkDallocI	Instances of this interface may be set to the ChunkHooks struct.
ChunkDecommitI	Instances of this interface may be set to the ChunkHooks struct.
ChunkMergeI	Instances of this interface may be set to the ChunkHooks struct.
ChunkPurgeI	Instances of this interface may be set to the ChunkHooks struct.
ChunkSplitI	Instances of this interface may be set to the ChunkHooks struct.
MallocMessageCallbackI	Instances of this interface may be passed to the malloc_usable_size method.

Class Summary

Class	Description
ChunkAlloc	Instances of this class may be set to the ChunkHooks struct.
ChunkCommit	Instances of this class may be set to the ChunkHooks struct.
ChunkDalloc	Instances of this class may be set to the ChunkHooks struct.
ChunkDecommit	Instances of this class may be set to the ChunkHooks struct.
ChunkHooks	Comprises function pointers which are described individually below.
ChunkHooks.Buffer	An array of ChunkHooks structs.
ChunkMerge	Instances of this class may be set to the ChunkHooks struct.
ChunkPurge	Instances of this class may be set to the ChunkHooks struct.
ChunkSplit	Instances of this class may be set to the ChunkHooks struct.
JEmacros	Macros for jemalloc.
JEmalloc	Native bindings to jemalloc.
JEmalloc.Functions	Contains the function pointers loaded from the jemalloc SharedLibrary.
MallocMessageCallback	Instances of this class may be passed to the malloc_usable_size method.

Package org.lwjgl.system.jemalloc Description

Contains bindings to the jemalloc library. jemalloc is a general purpose malloc implementation that emphasizes fragmentation avoidance and scalable concurrency support.

The jemalloc documentation can be found here. The jemalloc wiki also contains useful information.

The jemalloc shared library that comes with LWJGL is configured with:

• --with-jemalloc-prefix=je_
• --with-malloc-conf=purge:decay
• --disable-stats
• --disable-fill
• --disable-zone-allocator (MacOS)
• --enable-lazy-lock=no (Windows)

The shared library may be replaced with a custom build that has more features enabled.

Dynamic configuration (for enabled features) is also possible, using either the MALLOC_CONF environment variable or the MALLCTL NAMESPACE and the mallctl* functions.