4.0 patch: Implement gij -Xss option

[Krister Walfridsson]

On Thu, 17 Nov 2005, Bryce McKinlay wrote:

> 2005-11-17  Bryce McKinlay  <mckinlay@redhat.com>
>
>        Implement -Xss.
>        * include/jvm.h (gcj::stack_size): Declare.
>        (_Jv_StackSize): Declare.
>        * posix-threads.cc (_Jv_InitThreads): Validate gcj::stack_size.
>        (_Jv_ThreadStart): Set stack size if specified.
>        * prims.cc (gcj::stack_size): Define.
>        (parse_memory_size): Renamed from parse_heap_size.
>        (_Jv_SetStackSize): Parse stack size argument and set gcj::stack_size.

NetBSD does not define PTHREAD_STACK_MIN, so this breaks bootstrap.
Something along the line of the patch below need to be committed on
the trunk, gcc-4_0-branch, and gcc-4_1-branch.

The patch has been bootstrapped and regtested on i386-unknown-netbsdelf2.1
for the tree branches.

    /Krister


2005-12-30  Krister Walfridsson  <cato@df.lth.se>

 	* posix-threads.cc (_Jv_InitThreads): #ifdef PTHREAD_STACK_MIN


Index: posix-threads.cc
===================================================================
--- posix-threads.cc	(revision 109109)
+++ posix-threads.cc	(working copy)
@@ -338,8 +338,10 @@
      // Bigger default on 64-bit systems.
      min_ss *= 2;

+#ifdef PTHREAD_STACK_MIN
    if (min_ss < PTHREAD_STACK_MIN)
      min_ss = PTHREAD_STACK_MIN;
+#endif

    if (gcj::stack_size > 0 && gcj::stack_size < min_ss)
      gcj::stack_size = min_ss;