public interface NativeAccess
Provides access to native functionality needed by Elastisearch.
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Nested Class Summary
Nested ClassesModifier and TypeInterfaceDescriptionstatic enumPossible stats for execution filtering. -
Method Summary
Modifier and TypeMethodDescriptionallocatedSizeInBytes(Path path) Retrieves the actual number of bytes of disk storage used to store a specified file.booleanDetermine whether this JVM is running as the root user.Return whether installing the exec system call filters was successful, and to what degree.Return limits for the current process.default WindowsFunctionsReturns an accessor for native functions only available on Windows, ornullif not on Windows.getZstd()Returns an accessor to zstd compression functions.static NativeAccessinstance()Get the one and only instance ofNativeAccesswhich is specific to the running platform and JVM.booleanReturn whether locking memory was successful, or false otherwise.newBuffer(int len) Creates a newCloseableByteBuffer.systemd()voidAttempts to install a system call filter to block process execution.voidAttempt to lock this process's virtual memory address space into physical RAM.voidtryPreallocate(Path file, long size)
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Method Details
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instance
Get the one and only instance ofNativeAccesswhich is specific to the running platform and JVM. -
definitelyRunningAsRoot
boolean definitelyRunningAsRoot()Determine whether this JVM is running as the root user.- Returns:
- true if running as root, or false if unsure
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getProcessLimits
ProcessLimits getProcessLimits()Return limits for the current process. -
tryLockMemory
void tryLockMemory()Attempt to lock this process's virtual memory address space into physical RAM. -
isMemoryLocked
boolean isMemoryLocked()Return whether locking memory was successful, or false otherwise. -
tryInstallExecSandbox
void tryInstallExecSandbox()Attempts to install a system call filter to block process execution. -
getExecSandboxState
NativeAccess.ExecSandboxState getExecSandboxState()Return whether installing the exec system call filters was successful, and to what degree. -
systemd
Systemd systemd() -
getZstd
Zstd getZstd()Returns an accessor to zstd compression functions.- Returns:
- an object used to compress and decompress bytes using zstd
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allocatedSizeInBytes
Retrieves the actual number of bytes of disk storage used to store a specified file.- Parameters:
path- the path to the file- Returns:
- an
OptionalLongthat contains the number of allocated bytes on disk for the file, or empty if the size is invalid
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tryPreallocate
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getWindowsFunctions
Returns an accessor for native functions only available on Windows, ornullif not on Windows. -
getVectorSimilarityFunctions
Optional<VectorSimilarityFunctions> getVectorSimilarityFunctions() -
newBuffer
Creates a newCloseableByteBuffer. The buffer must be used within the same thread that it is created.- Parameters:
len- the number of bytes the buffer should allocate- Returns:
- the buffer
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