/usr/lib/mlton/include/gc/thread.h is in mlton-basis 20100608-5.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | /* Copyright (C) 1999-2007 Henry Cejtin, Matthew Fluet, Suresh
* Jagannathan, and Stephen Weeks.
* Copyright (C) 1997-2000 NEC Research Institute.
*
* MLton is released under a BSD-style license.
* See the file MLton-LICENSE for details.
*/
#if (defined (MLTON_GC_INTERNAL_TYPES))
/*
* Thread objects are normal objects with the following layout:
*
* header ::
* padding ::
* bytesNeeded (size_t) ::
* exnStack (size_t) ::
* stack (object-pointer)
*
* There may be zero or more bytes of padding for alignment purposes.
*
* The bytesNeeded size_t is the number of bytes needed when returning
* to this thread.
*
* The exnStack size_t is an offset added to stackBottom that
* specifies the top of the exnStack.
*
* The final component is the stack object-pointer.
*
* Note that the order of the fields is important. The non-objptr
* fields must be first, because a thread object must appear to be a
* normal object.
*/
typedef struct GC_thread {
size_t bytesNeeded;
size_t exnStack;
objptr stack;
} __attribute__ ((packed)) *GC_thread;
COMPILE_TIME_ASSERT(GC_thread__packed,
sizeof(struct GC_thread) ==
sizeof(size_t)
+ sizeof(size_t)
+ sizeof(objptr));
#define BOGUS_EXN_STACK ((size_t)(-1))
#else
struct GC_thread;
typedef struct GC_thread *GC_thread;
#endif /* (defined (MLTON_GC_INTERNAL_TYPES)) */
#if (defined (MLTON_GC_INTERNAL_FUNCS))
static void displayThread (GC_state s, GC_thread thread, FILE *stream);
static inline size_t sizeofThread (GC_state s);
static inline size_t offsetofThread (GC_state s);
#endif /* (defined (MLTON_GC_INTERNAL_FUNCS)) */
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