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#ifndef GC_PTHREAD_SUPPORT_H
#define GC_PTHREAD_SUPPORT_H
# include "private/gc_priv.h"
# if defined(GC_PTHREADS) && !defined(GC_WIN32_THREADS)
#if defined(GC_DARWIN_THREADS)
# include "private/darwin_stop_world.h"
#else
# include "private/pthread_stop_world.h"
#endif
#ifdef THREAD_LOCAL_ALLOC
# include "thread_local_alloc.h"
#endif /* THREAD_LOCAL_ALLOC */
/* We use the allocation lock to protect thread-related data structures. */
/* The set of all known threads. We intercept thread creation and */
/* joins. */
/* Protected by allocation/GC lock. */
/* Some of this should be declared volatile, but that's inconsistent */
/* with some library routine declarations. */
typedef struct GC_Thread_Rep {
struct GC_Thread_Rep * next; /* More recently allocated threads */
/* with a given pthread id come */
/* first. (All but the first are */
/* guaranteed to be dead, but we may */
/* not yet have registered the join.) */
pthread_t id;
/* Extra bookkeeping information the stopping code uses */
struct thread_stop_info stop_info;
short flags;
# define FINISHED 1 /* Thread has exited. */
# define DETACHED 2 /* Thread is treated as detached. */
/* Thread may really be detached, or */
/* it may have have been explicitly */
/* registered, in which case we can */
/* deallocate its GC_Thread_Rep once */
/* it unregisters itself, since it */
/* may not return a GC pointer. */
# define MAIN_THREAD 4 /* True for the original thread only. */
short thread_blocked; /* Protected by GC lock. */
/* Treated as a boolean value. If set, */
/* thread will acquire GC lock before */
/* doing any pointer manipulations, and */
/* has set its sp value. Thus it does */
/* not need to be sent a signal to stop */
/* it. */
ptr_t stack_end; /* Cold end of the stack. */
# ifdef IA64
ptr_t backing_store_end;
ptr_t backing_store_ptr;
# endif
void * status; /* The value returned from the thread. */
/* Used only to avoid premature */
/* reclamation of any data it might */
/* reference. */
/* This is unfortunately also the */
/* reason we need to intercept join */
/* and detach. */
# ifdef THREAD_LOCAL_ALLOC
struct thread_local_freelists tlfs;
# endif
} * GC_thread;
# define THREAD_TABLE_SZ 256 /* Must be power of 2 */
extern volatile GC_thread GC_threads[THREAD_TABLE_SZ];
extern GC_bool GC_thr_initialized;
GC_thread GC_lookup_thread(pthread_t id);
void GC_stop_init();
extern GC_bool GC_in_thread_creation;
/* We may currently be in thread creation or destruction. */
/* Only set to TRUE while allocation lock is held. */
/* When set, it is OK to run GC from unknown thread. */
#endif /* GC_PTHREADS && !GC_SOLARIS_THREADS.... etc */
#endif /* GC_PTHREAD_SUPPORT_H */
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