From JavaDoc
java.lang..Thread(
group,
target,
name, long stackSize)
Allocates a new
Thread object so that it has
target
as its run object, has the specified
name as its name, belongs to
the thread group referred to by
group, and has the specified
stack size.
This constructor is identical to
Thread(ThreadGroup,
Runnable, String) with the exception of the fact that it allows the
thread stack size to be specified. The stack size is the approximate number of
bytes of address space that the virtual machine is to allocate for this thread's
stack.
The effect of the stackSize parameter, if any, is highly
platform dependent.
On some platforms, specifying a higher value for the
stackSize
parameter may allow a thread to achieve greater recursion depth before throwing
a
StackOverflowError.
Similarly, specifying a lower value may allow a greater number of threads to
exist concurrently without throwing an
OutOfMemoryError
(or other internal error). The details of the relationship between the value of
the
stackSize parameter and the maximum recursion depth and concurrency
level are platform-dependent.
On some platforms, the value of the
stackSize parameter may have no effect whatsoever.
The virtual machine is free to treat the
stackSize parameter as a
suggestion. If the specified value is unreasonably low for the platform, the
virtual machine may instead use some platform-specific minimum value; if the
specified value is unreasonably high, the virtual machine may instead use some
platform-specific maximum. Likewise, the virtual machine is free to round the
specified value up or down as it sees fit (or to ignore it completely).
Specifying a value of zero for the
stackSize parameter will cause
this constructor to behave exactly like the
Thread(ThreadGroup, Runnable,
String) constructor.
Due to the platform-dependent nature of the behavior of this constructor,
extreme care should be exercised in its use. The thread stack size necessary to
perform a given computation will likely vary from one JRE implementation to
another. In light of this variation, careful tuning of the stack size parameter
may be required, and the tuning may need to be repeated for each JRE
implementation on which an application is to run.
Implementation note: Java platform implementers are encouraged to document
their implementation's behavior with respect to the
stackSize
parameter.
- Parameters:
- group the thread group.
- target the object whose
run method is called.
- name the name of the new thread.
- stackSize the desired stack size for the new thread, or zero to
indicate that this parameter is to be ignored.
- Throws:
- SecurityException
- if the current thread cannot create a thread in the specified thread group.
- Since:
- 1.4
