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Interface changes.

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This commit is contained in:
Ulrich Drepper 1998-05-07 12:02:54 +00:00
parent 042cf8fd5a
commit 4e767fd6e7
1 changed files with 44 additions and 1 deletions
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45
malloc/thread-m.h
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@ -19,13 +19,16 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* One out of _LIBC, USE_PTHREADS, USE_THR or USE_SPROC should be
/* $Id$
One out of _LIBC, USE_PTHREADS, USE_THR or USE_SPROC should be
defined, otherwise the token NO_THREADS and dummy implementations
of the macros will be defined. */
#ifndef _THREAD_M_H
#define _THREAD_M_H
#undef thread_atfork_static
#if defined(_LIBC) /* The GNU C library, a special case of Posix threads */
#include <libc-lock.h>
@ -60,6 +63,9 @@ typedef void * tsd_key_t;
#define mutex_unlock(m) \
(__pthread_mutex_unlock != NULL ? __pthread_mutex_unlock (m) : 0)
#define thread_atfork(prepare, parent, child) \
(__pthread_atfork != NULL ? __pthread_atfork(prepare, parent, child) : 0)
#elif defined(MUTEX_INITIALIZER)
/* Assume hurd, with cthreads */
@ -90,6 +96,12 @@ static int tsd_keys_alloced = 0;
#define tsd_getspecific(key, vptr) \
((vptr) = (void *)*__hurd_threadvar_location (_HURD_THREADVAR_MALLOC))
#define thread_atfork(prepare, parent, child) do {} while(0)
#define thread_atfork_static(prepare, parent, child) \
text_set_element(_hurd_fork_prepare_hook, prepare); \
text_set_element(_hurd_fork_parent_hook, parent); \
text_set_element(_hurd_fork_child_hook, child);
/* No we're *not* using pthreads. */
#define __pthread_initialize ((void (*)(void))0)
@ -115,12 +127,37 @@ typedef pthread_mutex_t mutex_t;
#define mutex_unlock(m) pthread_mutex_unlock(m)
/* thread specific data */
#if defined(__sgi) || defined(USE_TSD_DATA_HACK)
/* Hack for thread-specific data, e.g. on Irix 6.x. We can't use
pthread_setspecific because that function calls malloc() itself.
The hack only works when pthread_t can be converted to an integral
type. */
typedef void *tsd_key_t[256];
#define tsd_key_create(key, destr) do { \
int i; \
for(i=0; i<256; i++) (*key)[i] = 0; \
} while(0)
#define tsd_setspecific(key, data) \
(key[(unsigned)pthread_self() % 256] = (data))
#define tsd_getspecific(key, vptr) \
(vptr = key[(unsigned)pthread_self() % 256])
#else
typedef pthread_key_t tsd_key_t;
#define tsd_key_create(key, destr) pthread_key_create(key, destr)
#define tsd_setspecific(key, data) pthread_setspecific(key, data)
#define tsd_getspecific(key, vptr) (vptr = pthread_getspecific(key))
#endif
/* at fork */
#define thread_atfork(prepare, parent, child) \
pthread_atfork(prepare, parent, child)
#elif USE_THR /* Solaris threads */
#include <thread.h>
@ -142,6 +179,8 @@ typedef void *tsd_key_t[256];
#define tsd_setspecific(key, data) (key[(unsigned)thr_self() % 256] = (data))
#define tsd_getspecific(key, vptr) (vptr = key[(unsigned)thr_self() % 256])
#define thread_atfork(prepare, parent, child) do {} while(0)
#elif USE_SPROC /* SGI sproc() threads */
#include <sys/wait.h>
@ -165,6 +204,8 @@ int tsd_key_next;
#define tsd_setspecific(key, data) (((void **)(&PRDA->usr_prda))[key] = data)
#define tsd_getspecific(key, vptr) (vptr = ((void **)(&PRDA->usr_prda))[key])
#define thread_atfork(prepare, parent, child) do {} while(0)
#else /* no _LIBC or USE_... are defined */
#define NO_THREADS
@ -188,6 +229,8 @@ typedef void *tsd_key_t;
#define tsd_setspecific(key, data) do {} while(0)
#define tsd_getspecific(key, vptr) (vptr = NULL)
#define thread_atfork(prepare, parent, child) do {} while(0)
#endif /* defined(NO_THREADS) */
#endif /* !defined(_THREAD_M_H) */