diff options
| author |   d <d@openbsd.org> | 1998-11-20 11:18:22 +0000 |
|---|---|---|
| committer | d <d@openbsd.org> | 1998-11-20 11:18:22 +0000 |
| commit | 92efb7350713770eeac379dc990eaecbee107aa1 (patch) | |
| tree | 9e7a54e9f5f807b6269323fc5be9480298ad6de5 /lib/libc/stdlib/malloc.c | |
| parent | Move atomic_lock code from asm to C with inline asm; (diff) | |
| download | wireguard-openbsd-92efb7350713770eeac379dc990eaecbee107aa1.tar.xz wireguard-openbsd-92efb7350713770eeac379dc990eaecbee107aa1.zip | |
Add thread-safety to libc, so that libc_r will build (on i386 at least).
All POSIX libc api now there (to P1003.1c/D10)
(more md stuff is needed for other libc/arch/*)
(setlogin is no longer a special syscall)
Add -pthread option to gcc (that makes it use -lc_r and -D_POSIX_THREADS).
Doc some re-entrant routines
Add libc_r to intro(3)
dig() uses some libc srcs and an extra -I was needed there.
Add more md stuff to libc_r.
Update includes for the pthreads api
Update libc_r TODO
Diffstat (limited to 'lib/libc/stdlib/malloc.c')
| -rw-r--r-- | lib/libc/stdlib/malloc.c | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/lib/libc/stdlib/malloc.c b/lib/libc/stdlib/malloc.c index d1d87597918..ecbf93dc489 100644 --- a/lib/libc/stdlib/malloc.c +++ b/lib/libc/stdlib/malloc.c @@ -8,7 +8,7 @@ */ #if defined(LIBC_SCCS) && !defined(lint) -static char rcsid[] = "$OpenBSD: malloc.c,v 1.32 1998/08/06 16:26:32 millert Exp $"; +static char rcsid[] = "$OpenBSD: malloc.c,v 1.33 1998/11/20 11:18:50 d Exp $"; #endif /* LIBC_SCCS and not lint */ /* @@ -87,15 +87,27 @@ static char rcsid[] = "$OpenBSD: malloc.c,v 1.32 1998/08/06 16:26:32 millert Exp #endif /* __OpenBSD__ */ #ifdef _THREAD_SAFE -#include <pthread.h> -static pthread_mutex_t malloc_lock; -#define THREAD_LOCK() pthread_mutex_lock(&malloc_lock) -#define THREAD_UNLOCK() pthread_mutex_unlock(&malloc_lock) -#define THREAD_LOCK_INIT() pthread_mutex_init(&malloc_lock, 0); +# include "thread_private.h" +# if 0 + /* kernel threads */ +# include <pthread.h> + static pthread_mutex_t malloc_lock; +# define THREAD_LOCK() pthread_mutex_lock(&malloc_lock) +# define THREAD_UNLOCK() pthread_mutex_unlock(&malloc_lock) +# define THREAD_LOCK_INIT() pthread_mutex_init(&malloc_lock, 0); +# else + /* user threads */ +# include "spinlock.h" + static spinlock_t malloc_lock = _SPINLOCK_INITIALIZER; +# define THREAD_LOCK() if (__isthreaded) _SPINLOCK(&malloc_lock) +# define THREAD_UNLOCK() if (__isthreaded) _SPINUNLOCK(&malloc_lock) +# define THREAD_LOCK_INIT() +# endif #else -#define THREAD_LOCK() -#define THREAD_UNLOCK() -#define THREAD_LOCK_INIT() + /* no threads */ +# define THREAD_LOCK() +# define THREAD_UNLOCK() +# define THREAD_LOCK_INIT() #endif /* |