Package jnr.ffi
Class Platform
java.lang.Object
jnr.ffi.Platform
- Direct Known Subclasses:
Platform.Supported
,Platform.Unsupported
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Nested Class Summary
Nested ClassesModifier and TypeClassDescriptionstatic enum
The supported CPU architectures.private static final class
APlatform
subclass representing the MacOS system.private static final class
(package private) static final class
(package private) static final class
APlatform
subclass representing the Linux operating system.static enum
The common names of supported operating systems.private static final class
private static class
private static class
private static class
APlatform
subclass representing the Windows system. -
Field Summary
FieldsModifier and TypeFieldDescriptionprivate final int
private final Platform.CPU
protected final Pattern
private static final Locale
private final int
private final Platform.OS
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Constructor Summary
ConstructorsModifierConstructorDescriptionprivate
Platform
(Platform.OS os) Platform
(Platform.OS os, Platform.CPU cpu, int addressSize, int longSize, String libPattern) -
Method Summary
Modifier and TypeMethodDescriptionfinal int
Deprecated.private static int
private static Platform.CPU
private static Platform.OS
Determines the operating system jffi is running onprivate static Platform
private static Platform
Determines thePlatform
that best describes theOS
private static boolean
equalsIgnoreCase
(String s1, String s2) final Platform.CPU
getCPU()
Gets the current processor architecture the JVM is running on.getName()
Gets the name of thisPlatform
.static Platform
Gets the nativePlatform
final Platform.OS
getOS()
Gets the current Operating System.final String
static Platform
Deprecated.Returns the platform specific standard C library nameGets the version of this platform as specified by the system property "os.version"int
Gets the number representing the major version of this platform This uses the first number fromgetVersion()
int
Gets the number representing the minor version of this platform This uses the second number fromgetVersion()
final boolean
is32Bit()
final boolean
is64Bit()
final boolean
Returns true if the current platform is big endianfinal boolean
isBSD()
final boolean
Returns true if the current platform is little endianfinal boolean
isUnix()
libraryLocations
(String libName, List<String> additionalPaths) Returns a list of absolute paths to the found locations of a library with the base namelibName
, if the returned list is empty then the library could not be found and will fail to be loaded as a result.locateLibrary
(String libName, List<String> libraryPath) Searches through a list of directories for a native library.locateLibrary
(String libName, List<String> libraryPaths, Map<LibraryOption, Object> options) Searches through a list of directories for a native library.final int
longSize()
Deprecated.UseRuntime.longSize()
instead.mapLibraryName
(String libName) Maps from a generic library name (e.g.private static boolean
startsWithIgnoreCase
(String s1, String s2)
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Field Details
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LOCALE
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os
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cpu
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addressSize
private final int addressSize -
longSize
private final int longSize -
libPattern
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Constructor Details
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Platform
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Platform
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Method Details
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determineOS
Determines the operating system jffi is running on- Returns:
- An member of the
OS
enum.
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determinePlatform
Determines thePlatform
that best describes theOS
- Parameters:
os
- The operating system.- Returns:
- An instance of
Platform
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determinePlatform
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determineCPU
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calculateAddressSize
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getNativePlatform
Gets the nativePlatform
- Returns:
- The current platform.
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getPlatform
Deprecated. -
getOS
Gets the current Operating System.- Returns:
- A
OS
value representing the current Operating System.
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getCPU
Gets the current processor architecture the JVM is running on.- Returns:
- A
CPU
value representing the current processor architecture.
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isBSD
public final boolean isBSD() -
isUnix
public final boolean isUnix() -
longSize
public final int longSize()Deprecated.UseRuntime.longSize()
instead.Gets the size of a C 'long' on the native platform.- Returns:
- the size of a long in bits
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addressSize
public final int addressSize()Deprecated.UseRuntime.addressSize()
instead.Gets the size of a C address/pointer on the native platform.- Returns:
- the size of a pointer in bits
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is32Bit
public final boolean is32Bit()- Returns:
- true if this platform is 32 bit, else false
Note: do not use this to determine long size, instead use
Runtime.longSize()
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is64Bit
public final boolean is64Bit()- Returns:
- true if this platform is 64 bit, else false
Note: do not use this to determine long size, instead use
Runtime.longSize()
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isLittleEndian
public final boolean isLittleEndian()Returns true if the current platform is little endian- Returns:
- true if little endian, false otherwise or if cannot determine
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isBigEndian
public final boolean isBigEndian()Returns true if the current platform is big endian- Returns:
- true if big endian, false otherwise or if cannot determine
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getOSName
- Returns:
- the String representing the OS name from the System property
os.name
or null if none was found This is not the same asgetOS()
which returns thePlatform.OS
. For example: Mac OS X is thePlatform.OS.DARWIN
Platform.OS
but returns "Mac OS X" from this method
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getName
Gets the name of thisPlatform
.- Returns:
- The name of this platform.
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getVersion
Gets the version of this platform as specified by the system property "os.version"- Returns:
- the String representing the version of this platform, or null if none could be found
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getVersionNumbers
- Returns:
- the list of version numbers found from
getVersion()
or an empty list if none were found
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getVersionMajor
public int getVersionMajor()Gets the number representing the major version of this platform This uses the first number fromgetVersion()
- Returns:
- the number representing the major version of this platform or -1 if none was found
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getVersionMinor
public int getVersionMinor()Gets the number representing the minor version of this platform This uses the second number fromgetVersion()
- Returns:
- the number representing the minor version of this platform or -1 if none was found
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getStandardCLibraryName
Returns the platform specific standard C library name- Returns:
- The standard C library name
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mapLibraryName
Maps from a generic library name (e.g. "c") to the platform specific library name.- Parameters:
libName
- The library name to map- Returns:
- The mapped library name.
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locateLibrary
Searches through a list of directories for a native library.- Parameters:
libName
- the base name (e.g. "c") of the library to locatelibraryPath
- the list of directories to search- Returns:
- the path of the library
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locateLibrary
public String locateLibrary(String libName, List<String> libraryPaths, Map<LibraryOption, Object> options) Searches through a list of directories for a native library.- Parameters:
libName
- the base name (e.g. "c") of the library to locatelibraryPaths
- the list of directories to searchoptions
- map ofLibraryOption
s to customize search behavior such asLibraryOption.PreferCustomPaths
- Returns:
- the path of the library
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libraryLocations
Returns a list of absolute paths to the found locations of a library with the base namelibName
, if the returned list is empty then the library could not be found and will fail to be loaded as a result. Even if a library is found, this does not guarantee that it will successfully be loaded, it only guarantees that the reason for the failure was not that it was not found.- Parameters:
libName
- the base name (e.g. "c") of the library to locateadditionalPaths
- additional paths to search, these take precedence over default paths, (as is the behavior inLibraryLoader
) pass null to only search in the default paths- Returns:
- the list of absolute paths where the library was found
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startsWithIgnoreCase
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equalsIgnoreCase
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Runtime.addressSize()
instead.