* configure.in (ORIGINAL_LD_FOR_MULTILIBS): Preserve LD at

[pf3gnuchains/gcc-fork.git] / boehm-gc / solaris_threads.c

diff --git a/boehm-gc/solaris_threads.c b/boehm-gc/solaris_threads.c
index 8cc6319..2b520d3 100644 (file)
--- a/boehm-gc/solaris_threads.c
+++ b/boehm-gc/solaris_threads.c
@@ -16,7 +16,7 @@
  */
 /* Boehm, September 14, 1994 4:44 pm PDT */
 
-# if defined(GC_SOLARIS_THREADS) || defined(SOLARIS_THREADS)
+# if defined(GC_SOLARIS_THREADS) || defined(GC_SOLARIS_PTHREADS)
 
 # include "private/gc_priv.h"
 # include "private/solaris_threads.h"
@@ -414,7 +414,6 @@ GC_bool GC_thr_initialized = FALSE;
 
 size_t GC_min_stack_sz;
 
-size_t GC_page_sz;
 
 /*
  * stack_head is stored at the top of free stacks
@@ -456,7 +455,7 @@ ptr_t GC_stack_alloc(size_t * stack_size)
         GC_stack_free_lists[index] = GC_stack_free_lists[index]->next;
     } else {
 #ifdef MMAP_STACKS
-        base = (ptr_t)mmap(0, search_sz + GC_page_sz,
+        base = (ptr_t)mmap(0, search_sz + GC_page_size,
                             PROT_READ|PROT_WRITE, MAP_PRIVATE |MAP_NORESERVE,
                             GC_zfd, 0);
        if (base == (ptr_t)-1)
@@ -465,27 +464,27 @@ ptr_t GC_stack_alloc(size_t * stack_size)
                return NULL;
        }
 
-       mprotect(base, GC_page_sz, PROT_NONE);
-       /* Should this use divHBLKSZ(search_sz + GC_page_sz) ? -- cf */
+       mprotect(base, GC_page_size, PROT_NONE);
+       /* Should this use divHBLKSZ(search_sz + GC_page_size) ? -- cf */
        GC_is_fresh((struct hblk *)base, divHBLKSZ(search_sz));
-       base += GC_page_sz;
+       base += GC_page_size;
 
 #else
-        base = (ptr_t) GC_scratch_alloc(search_sz + 2*GC_page_sz);
+        base = (ptr_t) GC_scratch_alloc(search_sz + 2*GC_page_size);
        if (base == NULL)
        {
                *stack_size = 0;
                return NULL;
        }
 
-        base = (ptr_t)(((word)base + GC_page_sz) & ~(GC_page_sz - 1));
+        base = (ptr_t)(((word)base + GC_page_size) & ~(GC_page_size - 1));
         /* Protect hottest page to detect overflow. */
 #      ifdef SOLARIS23_MPROTECT_BUG_FIXED
-            mprotect(base, GC_page_sz, PROT_NONE);
+            mprotect(base, GC_page_size, PROT_NONE);
 #      endif
         GC_is_fresh((struct hblk *)base, divHBLKSZ(search_sz));
 
-        base += GC_page_sz;
+        base += GC_page_size;
 #endif
     }
     *stack_size = search_sz;
@@ -621,7 +620,18 @@ GC_thread GC_lookup_thread(thread_t id)
     return(p);
 }
 
+/* Solaris 2/Intel uses an initial stack size limit slightly bigger than the
+   SPARC default of 8 MB.  Account for this to warn only if the user has
+   raised the limit beyond the default.
+
+   This is identical to DFLSSIZ defined in <sys/vm_machparam.h>.  This file
+   is installed in /usr/platform/`uname -m`/include, which is not in the
+   default include directory list, so copy the definition here.  */
+#ifdef I386
+# define MAX_ORIG_STACK_SIZE (8 * 1024 * 1024 + ((USRSTACK) & 0x3FFFFF))
+#else
 # define MAX_ORIG_STACK_SIZE (8 * 1024 * 1024)
+#endif
 
 word GC_get_orig_stack_size() {
     struct rlimit rl;
@@ -654,8 +664,8 @@ void GC_my_stack_limits()
       /* original thread */
         /* Empirically, what should be the stack page with lowest      */
         /* address is actually inaccessible.                           */
-        stack_size = GC_get_orig_stack_size() - GC_page_sz;
-        stack = GC_stackbottom - stack_size + GC_page_sz;
+        stack_size = GC_get_orig_stack_size() - GC_page_size;
+        stack = GC_stackbottom - stack_size + GC_page_size;
     } else {
         stack = me -> stack;
     }
@@ -693,7 +703,7 @@ void GC_push_all_stacks()
             top = p -> stack + p -> stack_size;
         } else {
             /* The original stack. */
-            bottom = GC_stackbottom - GC_get_orig_stack_size() + GC_page_sz;
+            bottom = GC_stackbottom - GC_get_orig_stack_size() + GC_page_size;
             top = GC_stackbottom;
         }
         if ((word)sp > (word)bottom && (word)sp < (word)top) bottom = sp;
@@ -778,7 +788,6 @@ void GC_thr_init(void)
     GC_thr_initialized = TRUE;
     GC_min_stack_sz = ((thr_min_stack() + 32*1024 + HBLKSIZE-1)
                       & ~(HBLKSIZE - 1));
-    GC_page_sz = sysconf(_SC_PAGESIZE);
 #ifdef MMAP_STACKS
     GC_zfd = open("/dev/zero", O_RDONLY);
     if (GC_zfd == -1)
@@ -900,10 +909,7 @@ GC_thr_create(void *stack_base, size_t stack_size,
     void * stack = stack_base;
    
     LOCK();
-    if (!GC_thr_initialized)
-    {
-    GC_thr_init();
-    }
+    if (!GC_is_initialized) GC_init_inner();
     GC_multithreaded++;
     if (stack == 0) {
        if (stack_size == 0) stack_size = 1024*1024;
@@ -938,7 +944,7 @@ GC_thr_create(void *stack_base, size_t stack_size,
     return(result);
 }
 
-# else /* SOLARIS_THREADS */
+# else /* !GC_SOLARIS_THREADS */
 
 #ifndef LINT
   int GC_no_sunOS_threads;