Stdlib (Apache Tomcat 6.0.51 API Documentation)
Keywords: org.apache.tomcat.jni.Stdlib class

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## org.apache.tomcat.jni
Class Stdlib

    java.lang.Object
      org.apache.tomcat.jni.Stdlib

    public class Stdlib

extends java.lang.Object

Stdlib

Author:
  Mladen Turk

Constructor Summary
`Stdlib()`

Method Summary
`static long` | `calloc(int num, int sz)` Allocates an array in memory with elements initialized to 0.
`static void` | `free(long mem)` Deallocates or frees a memory block.
`static int` | `getpid()` Get current process pid.
`static int` | `getppid()` Get current process parent pid.
`static long` | `malloc(int sz)` Allocates memory blocks.
`static boolean` | `memread(byte[] dst, long src, int sz)` Read from plain memory
`static boolean` | `memset(long dst, int c, int sz)` Sets buffers to a specified character
`static boolean` | `memwrite(long dst, byte[] src, int sz)` Write to plain memory
`static long` | `realloc(long mem, int sz)` Reallocate memory blocks.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### Stdlib

    public Stdlib()

Method Detail

### memread

    public static boolean memread(byte[] dst,
                                  long src,
                                  int sz)

  Read from plain memory

  Parameters:
    `dst` - Destination byte array
    `src` - Source memory address
    `sz` - Number of bytes to copy.

### memwrite

    public static boolean memwrite(long dst,
                                   byte[] src,
                                   int sz)

  Write to plain memory

  Parameters:
    `dst` - Destination memory address
    `src` - Source byte array
    `sz` - Number of bytes to copy.

### memset

    public static boolean memset(long dst,
                                 int c,
                                 int sz)

  Sets buffers to a specified character

  Parameters:
    `dst` - Destination memory address
    `c` - Character to set.
    `sz` - Number of characters.

### malloc

    public static long malloc(int sz)

  Allocates memory blocks.

  Parameters:
    `sz` - Bytes to allocate.

### realloc

    public static long realloc(long mem,
                               int sz)

  Reallocate memory blocks.

  Parameters:
    `mem` - Pointer to previously allocated memory block.
    `sz` - New size in bytes.

### calloc

    public static long calloc(int num,
                              int sz)

  Allocates an array in memory with elements initialized to 0.

  Parameters:
    `num` - Number of elements.
    `sz` - Length in bytes of each element.

### free

    public static void free(long mem)

  Deallocates or frees a memory block.

  Parameters:
    `mem` - Previously allocated memory block to be freed.

### getpid

    public static int getpid()

  Get current process pid.

  Returns:
    current pid or < 1 in case of error.

### getppid

    public static int getppid()

  Get current process parent pid.

  Returns:
    parent pid or < 1 in case of error.

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