/*
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* Copyright (c) 1994 by Xerox Corporation. All rights reserved.
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* Copyright (c) 1996 by Silicon Graphics. All rights reserved.
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* Copyright (c) 1998 by Fergus Henderson. All rights reserved.
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* Copyright (c) 2000-2009 by Hewlett-Packard Development Company.
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* All rights reserved.
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*
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* THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
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* OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
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*
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* Permission is hereby granted to use or copy this program
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* for any purpose, provided the above notices are retained on all copies.
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* Permission to modify the code and to distribute modified code is granted,
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* provided the above notices are retained, and a notice that the code was
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* modified is included with the above copyright notice.
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*/
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#ifndef GC_PTHREAD_STOP_WORLD_H
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#define GC_PTHREAD_STOP_WORLD_H
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EXTERN_C_BEGIN
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struct thread_stop_info {
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# if !defined(GC_OPENBSD_UTHREADS) && !defined(NACL)
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# ifdef GC_ATOMIC_OPS_H
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volatile AO_t last_stop_count;
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# else
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word last_stop_count;
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# endif
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/* The value of GC_stop_count when the thread */
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/* last successfully handled a suspend signal. */
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# endif
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ptr_t stack_ptr; /* Valid only when stopped. */
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# ifdef NACL
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/* Grab NACL_GC_REG_STORAGE_SIZE pointers off the stack when */
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/* going into a syscall. 20 is more than we need, but it's an */
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/* overestimate in case the instrumented function uses any callee */
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/* saved registers, they may be pushed to the stack much earlier. */
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/* Also, on amd64 'push' puts 8 bytes on the stack even though */
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/* our pointers are 4 bytes. */
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# ifdef ARM32
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/* Space for r4-r8, r10-r12, r14. */
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# define NACL_GC_REG_STORAGE_SIZE 9
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# else
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# define NACL_GC_REG_STORAGE_SIZE 20
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# endif
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ptr_t reg_storage[NACL_GC_REG_STORAGE_SIZE];
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# endif
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#if defined(PLATFORM_GC_REG_STORAGE_SIZE)
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__uint64_t registers[PLATFORM_GC_REG_STORAGE_SIZE];
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#endif
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};
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GC_INNER void GC_stop_init(void);
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EXTERN_C_END
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#endif
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