loadLibraryByHelper() — netty Function Reference

Architecture documentation for the loadLibraryByHelper() function in NativeLibraryLoader.java from the netty codebase.

Function java CommonUtil Internal called by 1

Entity Profile

CommonUtil→ Internal→ loadLibraryByHelper() — netty Function Reference

Dependency Diagram

graph TD
  4596d050_35b6_8fd1_9844_425af82366ca["loadLibraryByHelper()"]
  e940cc67_3be6_5ff3_e560_4d68972dc13b["NativeLibraryLoader"]
  4596d050_35b6_8fd1_9844_425af82366ca -->|defined in| e940cc67_3be6_5ff3_e560_4d68972dc13b
  bafe3f15_b0bf_647a_3a35_cd885f9d3174["loadLibrary()"]
  bafe3f15_b0bf_647a_3a35_cd885f9d3174 -->|calls| 4596d050_35b6_8fd1_9844_425af82366ca
  style 4596d050_35b6_8fd1_9844_425af82366ca fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

common/src/main/java/io/netty/util/internal/NativeLibraryLoader.java lines 411–438

    private static void loadLibraryByHelper(final Class<?> helper, final String name, final boolean absolute)
            throws UnsatisfiedLinkError {
        Object ret = AccessController.doPrivileged(new PrivilegedAction<Object>() {
            @Override
            public Object run() {
                try {
                    // Invoke the helper to load the native library, if it succeeds, then the native
                    // library belong to the specified ClassLoader.
                    Method method = helper.getMethod("loadLibrary", String.class, boolean.class);
                    method.setAccessible(true);
                    return method.invoke(null, name, absolute);
                } catch (Exception e) {
                    return e;
                }
            }
        });
        if (ret instanceof Throwable) {
            Throwable t = (Throwable) ret;
            assert !(t instanceof UnsatisfiedLinkError) : t + " should be a wrapper throwable";
            Throwable cause = t.getCause();
            if (cause instanceof UnsatisfiedLinkError) {
                throw (UnsatisfiedLinkError) cause;
            }
            UnsatisfiedLinkError ule = new UnsatisfiedLinkError(t.getMessage());
            ule.initCause(t);
            throw ule;
        }
    }