org.lwjgl.system.macosx.DynamicLinkLoader Maven / Gradle / Ivy
/*
* Copyright LWJGL. All rights reserved.
* License terms: https://www.lwjgl.org/license
* MACHINE GENERATED FILE, DO NOT EDIT
*/
package org.lwjgl.system.macosx;
import javax.annotation.*;
import java.nio.*;
import org.lwjgl.system.*;
import static org.lwjgl.system.Checks.*;
import static org.lwjgl.system.MemoryStack.*;
import static org.lwjgl.system.MemoryUtil.*;
/** Native bindings to <dlfcn.h>. */
public class DynamicLinkLoader {
/** The {@code mode} argument to {@link #dlopen} contains one of the following. */
public static final int
RTLD_LAZY = 0x1,
RTLD_NOW = 0x2,
RTLD_LOCAL = 0x4,
RTLD_GLOBAL = 0x8;
/** Special-handle values for {@link #dlsym}. */
public static final long
RTLD_NEXT = 0xFFFFFFFFFFFFFFFFL,
RTLD_DEFAULT = 0xFFFFFFFFFFFFFFFEL,
RTLD_SELF = 0xFFFFFFFFFFFFFFFDL,
RTLD_MAIN_ONLY = 0xFFFFFFFFFFFFFFFBL;
static { Library.initialize(); }
protected DynamicLinkLoader() {
throw new UnsupportedOperationException();
}
// --- [ dlopen ] ---
/** Unsafe version of: {@link #dlopen} */
public static native long ndlopen(long path, int mode);
/**
* Loads and links a dynamic library or bundle.
*
* This function examines the Mach-O file specified by path. If the image is compatible with the current process and has not already been loaded into the
* process, the image is loaded and linked. If the image contains initializer functions, they are executed before this function returns.
*
* Subsequent calls to {@code dlopen} to load the same image return the same handle, but the internal reference count for the handle is incremented.
* Therefore, all {@code dlopen} calls must be balanced with {@link #dlclose} calls.
*
* For efficiency, the {@link #RTLD_LAZY} binding mode is preferred over {@link #RTLD_NOW}. However, using {@link #RTLD_NOW} ensures that any undefined
* symbols are discovered during the call to {@code dlopen}.
*
* The dynamic loader looks in the paths specified by a set of environment variables, and in the process's current directory, when it searches for a
* library. These paths are called dynamic loader search paths. The environment variables are {@code LD_LIBRARY_PATH}, {@code DYLD_LIBRARY_PATH}, and
* {@code DYLD_FALLBACK_LIBRARY_PATH}. The default value of {@code DYLD_FALLBACK_LIBRARY_PATH} (used when this variable is not set), is
* {@code $HOME/lib;/usr/local/lib;/usr/lib}.
*
* The order in which the search paths are searched depends on whether path is a filename (it does not contain a slash) or a pathname (it contains at least
* one slash).
*
* When path is a filename, the dynamic loader searches for the library in the search paths in the following order:
*
*
* - $LD_LIBRARY_PATH
* - $DYLD_LIBRARY_PATH
* - The process's working directory
* - $DYLD_FALLBACK_LIBRARY_PATH
*
*
* When path is a pathname, the dynamic loader searches for the library in the search paths in the following order:
*
*
* - $DYLD_LIBRARY_PATH
* - The given pathname
* - $DYLD_FALLBACK_LIBRARY_PATH using the filename
*
*
* @param path path to the image to open
* @param mode specifies when the loaded image's external symbols are bound to their definitions in dependent libraries (lazy or at load time) and the visibility
* of the image's exported symbols (global or local). The value of this parameter is made up by ORing one binding behavior value with one visibility
* specification value.
*
* The following values specify the binding behavior:
*
*
* - {@link #RTLD_LAZY} (default): Each external symbol reference is bound the first time it's used.
* - {@link #RTLD_NOW}: All external symbol references are bound immediately.
*
*
* The following values specify external symbol visibility:
*
*
* - {@link #RTLD_GLOBAL} (default): The loaded image's exported symbols are available to any images that use a flat namespace or to calls to
* dlsym when using a special handle (see {@link #dlsym} for details).
* - {@link #RTLD_LOCAL}: The loaded image's exported symbols are generally hidden. They are available only to {@link #dlsym} invocations that
* use the handle returned by this function.
*
*/
@NativeType("void *")
public static long dlopen(@Nullable @NativeType("char const *") ByteBuffer path, int mode) {
if (CHECKS) {
checkNT1Safe(path);
}
return ndlopen(memAddressSafe(path), mode);
}
/**
* Loads and links a dynamic library or bundle.
*
* This function examines the Mach-O file specified by path. If the image is compatible with the current process and has not already been loaded into the
* process, the image is loaded and linked. If the image contains initializer functions, they are executed before this function returns.
*
* Subsequent calls to {@code dlopen} to load the same image return the same handle, but the internal reference count for the handle is incremented.
* Therefore, all {@code dlopen} calls must be balanced with {@link #dlclose} calls.
*
* For efficiency, the {@link #RTLD_LAZY} binding mode is preferred over {@link #RTLD_NOW}. However, using {@link #RTLD_NOW} ensures that any undefined
* symbols are discovered during the call to {@code dlopen}.
*
* The dynamic loader looks in the paths specified by a set of environment variables, and in the process's current directory, when it searches for a
* library. These paths are called dynamic loader search paths. The environment variables are {@code LD_LIBRARY_PATH}, {@code DYLD_LIBRARY_PATH}, and
* {@code DYLD_FALLBACK_LIBRARY_PATH}. The default value of {@code DYLD_FALLBACK_LIBRARY_PATH} (used when this variable is not set), is
* {@code $HOME/lib;/usr/local/lib;/usr/lib}.
*
* The order in which the search paths are searched depends on whether path is a filename (it does not contain a slash) or a pathname (it contains at least
* one slash).
*
* When path is a filename, the dynamic loader searches for the library in the search paths in the following order:
*
*
* - $LD_LIBRARY_PATH
* - $DYLD_LIBRARY_PATH
* - The process's working directory
* - $DYLD_FALLBACK_LIBRARY_PATH
*
*
* When path is a pathname, the dynamic loader searches for the library in the search paths in the following order:
*
*
* - $DYLD_LIBRARY_PATH
* - The given pathname
* - $DYLD_FALLBACK_LIBRARY_PATH using the filename
*
*
* @param path path to the image to open
* @param mode specifies when the loaded image's external symbols are bound to their definitions in dependent libraries (lazy or at load time) and the visibility
* of the image's exported symbols (global or local). The value of this parameter is made up by ORing one binding behavior value with one visibility
* specification value.
*
* The following values specify the binding behavior:
*
*
* - {@link #RTLD_LAZY} (default): Each external symbol reference is bound the first time it's used.
* - {@link #RTLD_NOW}: All external symbol references are bound immediately.
*
*
* The following values specify external symbol visibility:
*
*
* - {@link #RTLD_GLOBAL} (default): The loaded image's exported symbols are available to any images that use a flat namespace or to calls to
* dlsym when using a special handle (see {@link #dlsym} for details).
* - {@link #RTLD_LOCAL}: The loaded image's exported symbols are generally hidden. They are available only to {@link #dlsym} invocations that
* use the handle returned by this function.
*
*/
@NativeType("void *")
public static long dlopen(@Nullable @NativeType("char const *") CharSequence path, int mode) {
MemoryStack stack = stackGet(); int stackPointer = stack.getPointer();
try {
stack.nASCIISafe(path, true);
long pathEncoded = path == null ? NULL : stack.getPointerAddress();
return ndlopen(pathEncoded, mode);
} finally {
stack.setPointer(stackPointer);
}
}
// --- [ dlerror ] ---
/** Unsafe version of: {@link #dlerror} */
public static native long ndlerror();
/**
* Provides diagnostic information corresponding to problems with calls to {@link #dlopen}, {@link #dlsym}, and {@link #dlclose} in the same thread.
*
* When there's a problem to report, this function returns a pointer to a null-terminated string describing the problem. Otherwise, this function returns
* {@code NULL}.
*
* Each call to {@code dlerror} resets its diagnostic buffer. If a program needs to keep a record of past error messages, it must store them itself.
* Subsequent calls to {@code dlerror} in the same thread with no calls to {@link #dlopen}, {@link #dlsym}, or {@link #dlclose}, return {@code NULL}.
*/
@Nullable
@NativeType("char const *")
public static String dlerror() {
long __result = ndlerror();
return memASCIISafe(__result);
}
// --- [ dlsym ] ---
/** Unsafe version of: {@link #dlsym} */
public static native long ndlsym(long handle, long name);
/**
* Returns the address of a symbol.
*
* The value of handle specifies what images this function searches for to locate the symbol specified by the symbol parameter. The following table
* describes the possible values for the handle parameter:
*
*
* Handle value Search scope {@code dlopen} handle Image associated with the {@link #dlopen} handle. {@link #RTLD_DEFAULT} Every dependent library or {@link #RTLD_GLOBAL}–opened library in the current process, in the order they were loaded. {@link #RTLD_NEXT} Dependent libraries that were loaded after the one calling this function. Libraries opened with {@link #dlopen} are not searched.
*
* Unlike in the NS... functions, the symbol parameter doesn't require a leading underscore to be part of the symbol name.
*
* @param handle a handle obtained by a call to {@link #dlopen}, or a special handle. If the handle was obtained by a call to {@link #dlopen}, it must not have been
* closed with a call to {@link #dlclose}. These are the possible special-handle values: {@link #RTLD_DEFAULT}, and {@link #RTLD_NEXT}.
* @param name the null-terminated character string containing the C name of the symbol being sought
*/
@NativeType("void *")
public static long dlsym(@NativeType("void *") long handle, @NativeType("char const *") ByteBuffer name) {
if (CHECKS) {
check(handle);
checkNT1(name);
}
return ndlsym(handle, memAddress(name));
}
/**
* Returns the address of a symbol.
*
* The value of handle specifies what images this function searches for to locate the symbol specified by the symbol parameter. The following table
* describes the possible values for the handle parameter:
*
*
* Handle value Search scope {@code dlopen} handle Image associated with the {@link #dlopen} handle. {@link #RTLD_DEFAULT} Every dependent library or {@link #RTLD_GLOBAL}–opened library in the current process, in the order they were loaded. {@link #RTLD_NEXT} Dependent libraries that were loaded after the one calling this function. Libraries opened with {@link #dlopen} are not searched.
*
* Unlike in the NS... functions, the symbol parameter doesn't require a leading underscore to be part of the symbol name.
*
* @param handle a handle obtained by a call to {@link #dlopen}, or a special handle. If the handle was obtained by a call to {@link #dlopen}, it must not have been
* closed with a call to {@link #dlclose}. These are the possible special-handle values: {@link #RTLD_DEFAULT}, and {@link #RTLD_NEXT}.
* @param name the null-terminated character string containing the C name of the symbol being sought
*/
@NativeType("void *")
public static long dlsym(@NativeType("void *") long handle, @NativeType("char const *") CharSequence name) {
if (CHECKS) {
check(handle);
}
MemoryStack stack = stackGet(); int stackPointer = stack.getPointer();
try {
stack.nASCII(name, true);
long nameEncoded = stack.getPointerAddress();
return ndlsym(handle, nameEncoded);
} finally {
stack.setPointer(stackPointer);
}
}
// --- [ dlclose ] ---
/** Unsafe version of: {@link #dlclose} */
public static native int ndlclose(long handle);
/**
* Closes a dynamic library or bundle.
*
* This function decreases the reference count of the image referenced by handle. When the reference count for handle becomes 0, the termination routines
* in the image are called, and the image is removed from the address space of the current process. After that point, handle is rendered invalid.
*
* @param handle a handle obtained through a call to {@link #dlopen}.
*/
public static int dlclose(@NativeType("void *") long handle) {
if (CHECKS) {
check(handle);
}
return ndlclose(handle);
}
}