/* -----------------------------------------------------------------------------
- * $Id: Storage.c,v 1.58 2002/01/24 01:45:55 sof Exp $
+ * $Id: Storage.c,v 1.61 2002/04/19 12:31:07 simonmar Exp $
*
* (c) The GHC Team, 1998-1999
*
#include "Storage.h"
#include "Schedule.h"
+#include "OSThreads.h"
#include "StoragePriv.h"
#include "RetainerProfile.h" // for counting memory blocks (memInventory)
+#ifdef darwin_TARGET_OS
+#include <mach-o/getsect.h>
+unsigned long macho_etext = 0;
+unsigned long macho_edata = 0;
+
+static void macosx_get_memory_layout(void)
+{
+ struct segment_command *seg;
+
+ seg = getsegbyname("__TEXT");
+ macho_etext = seg->vmaddr + seg->vmsize;
+ seg = getsegbyname("__DATA");
+ macho_edata = seg->vmaddr + seg->vmsize;
+}
+#endif
+
StgClosure *caf_list = NULL;
bdescr *small_alloc_list; /* allocate()d small objects */
* simultaneous access by two STG threads.
*/
#ifdef SMP
-pthread_mutex_t sm_mutex = PTHREAD_MUTEX_INITIALIZER;
+Mutex sm_mutex = INIT_MUTEX_VAR;
#endif
/*
step *stp;
generation *gen;
+#if defined(darwin_TARGET_OS)
+ macosx_get_memory_layout();
+#endif
+
+ /* Sanity check to make sure we are able to make the distinction
+ * between closures and infotables
+ */
+ if (!LOOKS_LIKE_GHC_INFO(&stg_BLACKHOLE_info)) {
+ barf("LOOKS_LIKE_GHC_INFO+ is incorrectly defined");
+ exit(0);
+ }
+ if (LOOKS_LIKE_GHC_INFO(&stg_dummy_ret_closure)) {
+ barf("LOOKS_LIKE_GHC_INFO- is incorrectly defined");
+ exit(0);
+ }
+ if (LOOKS_LIKE_STATIC_CLOSURE(&stg_BLACKHOLE_info)) {
+ barf("LOOKS_LIKE_STATIC_CLOSURE- is incorrectly defined");
+ exit(0);
+ }
+ if (!LOOKS_LIKE_STATIC_CLOSURE(&stg_dummy_ret_closure)) {
+ barf("LOOKS_LIKE_STATIC_CLOSURE+ is incorrectly defined");
+ exit(0);
+ }
+
if (RtsFlags.GcFlags.maxHeapSize != 0 &&
RtsFlags.GcFlags.heapSizeSuggestion >
RtsFlags.GcFlags.maxHeapSize) {
initBlockAllocator();
+#if defined(SMP)
+ initCondition(&sm_mutex);
+#endif
+
/* allocate generation info array */
generations = (generation *)stgMallocBytes(RtsFlags.GcFlags.generations
* sizeof(struct _generation),
/* Tell GNU multi-precision pkg about our custom alloc functions */
mp_set_memory_functions(stgAllocForGMP, stgReallocForGMP, stgDeallocForGMP);
-#ifdef SMP
- pthread_mutex_init(&sm_mutex, NULL);
+#if defined(SMP)
+ initMutex(&sm_mutex);
#endif
IF_DEBUG(gc, statDescribeGens());
* come to do a major GC we won't need the mut_link field
* any more and can use it as a STATIC_LINK.
*/
- ACQUIRE_LOCK(&sm_mutex);
+ ACQUIRE_SM_LOCK;
if (is_dynamically_loaded_rwdata_ptr((StgPtr)caf)) {
((StgIndStatic *)caf)->saved_info = (StgInfoTable *)caf->header.info;
oldest_gen->mut_once_list = (StgMutClosure *)caf;
}
- RELEASE_LOCK(&sm_mutex);
+ RELEASE_SM_LOCK;
#ifdef PAR
/* If we are PAR or DIST then we never forget a CAF */
bdescr *bd;
StgPtr p;
- ACQUIRE_LOCK(&sm_mutex);
+ ACQUIRE_SM_LOCK;
TICK_ALLOC_HEAP_NOCTR(n);
CCS_ALLOC(CCCS,n);
* much difference.
*/
alloc_blocks += req_blocks;
- RELEASE_LOCK(&sm_mutex);
+ RELEASE_SM_LOCK;
return bd->start;
/* small allocation (<LARGE_OBJECT_THRESHOLD) */
p = alloc_Hp;
alloc_Hp += n;
- RELEASE_LOCK(&sm_mutex);
+ RELEASE_SM_LOCK;
return p;
}
StgPtr p;
bdescr *bd = pinned_object_block;
- ACQUIRE_LOCK(&sm_mutex);
+ ACQUIRE_SM_LOCK;
TICK_ALLOC_HEAP_NOCTR(n);
CCS_ALLOC(CCCS,n);
// If the request is for a large object, then allocate()
// will give us a pinned object anyway.
if (n >= LARGE_OBJECT_THRESHOLD/sizeof(W_)) {
- RELEASE_LOCK(&sm_mutex);
+ RELEASE_SM_LOCK;
return allocate(n);
}
p = bd->free;
bd->free += n;
- RELEASE_LOCK(&sm_mutex);
+ RELEASE_SM_LOCK;
return p;
}