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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [boehm-gc/] [include/] [gc_local_alloc.h] - Rev 818
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/* * Copyright (c) 2000 by Hewlett-Packard Company. All rights reserved. * * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. * * Permission is hereby granted to use or copy this program * for any purpose, provided the above notices are retained on all copies. * Permission to modify the code and to distribute modified code is granted, * provided the above notices are retained, and a notice that the code was * modified is included with the above copyright notice. */ /* * Interface for thread local allocation. Memory obtained * this way can be used by all threads, as though it were obtained * from an allocator like GC_malloc. The difference is that GC_local_malloc * counts the number of allocations of a given size from the current thread, * and uses GC_malloc_many to perform the allocations once a threashold * is exceeded. Thus far less synchronization may be needed. * Allocation of known large objects should not use this interface. * This interface is designed primarily for fast allocation of small * objects on multiprocessors, e.g. for a JVM running on an MP server. * * If this file is included with GC_GCJ_SUPPORT defined, GCJ-style * bitmap allocation primitives will also be included. * * If this file is included with GC_REDIRECT_TO_LOCAL defined, then * GC_MALLOC, GC_MALLOC_ATOMIC, and possibly GC_GCJ_MALLOC will * be redefined to use the thread local allocatoor. * * The interface is available only if the collector is built with * -DTHREAD_LOCAL_ALLOC, which is currently supported only on Linux. * * The debugging allocators use standard, not thread-local allocation. * * These routines normally require an explicit call to GC_init(), though * that may be done from a constructor function. */ #ifndef GC_LOCAL_ALLOC_H #define GC_LOCAL_ALLOC_H #ifndef _GC_H # include "gc.h" #endif #if defined(GC_GCJ_SUPPORT) && !defined(GC_GCJ_H) # include "gc_gcj.h" #endif /* We assume ANSI C for this interface. */ GC_PTR GC_local_malloc(size_t bytes); GC_PTR GC_local_malloc_atomic(size_t bytes); #if defined(GC_GCJ_SUPPORT) GC_PTR GC_local_gcj_malloc(size_t bytes, void * ptr_to_struct_containing_descr); #endif # ifdef GC_DEBUG /* We don't really use local allocation in this case. */ # define GC_LOCAL_MALLOC(s) GC_debug_malloc(s,GC_EXTRAS) # define GC_LOCAL_MALLOC_ATOMIC(s) GC_debug_malloc_atomic(s,GC_EXTRAS) # ifdef GC_GCJ_SUPPORT # define GC_LOCAL_GCJ_MALLOC(s,d) GC_debug_gcj_malloc(s,d,GC_EXTRAS) # endif # else # define GC_LOCAL_MALLOC(s) GC_local_malloc(s) # define GC_LOCAL_MALLOC_ATOMIC(s) GC_local_malloc_atomic(s) # ifdef GC_GCJ_SUPPORT # define GC_LOCAL_GCJ_MALLOC(s,d) GC_local_gcj_malloc(s,d) # endif # endif # ifdef GC_REDIRECT_TO_LOCAL # undef GC_MALLOC # define GC_MALLOC(s) GC_LOCAL_MALLOC(s) # undef GC_MALLOC_ATOMIC # define GC_MALLOC_ATOMIC(s) GC_LOCAL_MALLOC_ATOMIC(s) # ifdef GC_GCJ_SUPPORT # undef GC_GCJ_MALLOC # define GC_GCJ_MALLOC(s,d) GC_LOCAL_GCJ_MALLOC(s,d) # endif # endif #endif /* GC_LOCAL_ALLOC_H */
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