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@ -8,7 +8,7 @@ |
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*/ |
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#if defined(LIBC_SCCS) && !defined(lint) |
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static char rcsid[] = "$OpenBSD: malloc.c,v 1.50 2002/11/03 23:58:39 marc Exp $"; |
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static char rcsid[] = "$OpenBSD: malloc.c,v 1.51 2002/11/05 22:19:55 marc Exp $"; |
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#endif /* LIBC_SCCS and not lint */ |
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/* |
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@ -48,6 +48,8 @@ static char rcsid[] = "$OpenBSD: malloc.c,v 1.50 2002/11/03 23:58:39 marc Exp $" |
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#include <fcntl.h> |
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#include <errno.h> |
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#include "thread_private.h" |
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/* |
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* The basic parameters you can tweak. |
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* |
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@ -67,39 +69,6 @@ static char rcsid[] = "$OpenBSD: malloc.c,v 1.50 2002/11/03 23:58:39 marc Exp $" |
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# define malloc_pageshift 13U |
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#endif /* __OpenBSD__ */ |
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#ifdef _THREAD_SAFE |
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# include "thread_private.h" |
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# if 0 |
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/* kernel threads */ |
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# include <pthread.h> |
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static pthread_mutex_t malloc_lock; |
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# define THREAD_LOCK() pthread_mutex_lock(&malloc_lock) |
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# define THREAD_UNLOCK() pthread_mutex_unlock(&malloc_lock) |
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# define THREAD_LOCK_INIT() pthread_mutex_init(&malloc_lock, 0); |
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# else |
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/* user threads */ |
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# include "spinlock.h" |
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static spinlock_t malloc_lock = _SPINLOCK_INITIALIZER; |
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# define THREAD_LOCK() if (__isthreaded) _SPINLOCK(&malloc_lock) |
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# define THREAD_UNLOCK() if (__isthreaded) _SPINUNLOCK(&malloc_lock) |
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# define THREAD_LOCK_INIT() |
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/* |
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* Malloc can't use the wrapped write() if it fails very early, so |
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* we use the unwrapped syscall _thread_sys_write() |
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*/ |
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# define write _thread_sys_write |
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ssize_t write(int, const void *, size_t); |
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# undef malloc |
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# undef realloc |
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# undef free |
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# endif |
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#else |
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/* no threads */ |
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# define THREAD_LOCK() |
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# define THREAD_UNLOCK() |
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# define THREAD_LOCK_INIT() |
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#endif |
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/* |
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* No user serviceable parts behind this point. |
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* |
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@ -494,7 +463,7 @@ malloc_init () |
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int i, j; |
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int save_errno = errno; |
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THREAD_LOCK_INIT(); |
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_MALLOC_LOCK_INIT(); |
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INIT_MMAP(); |
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@ -1244,17 +1213,17 @@ malloc(size_t size) |
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register void *r; |
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malloc_func = " in malloc():"; |
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THREAD_LOCK(); |
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_MALLOC_LOCK(); |
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if (malloc_active++) { |
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wrtwarning("recursive call.\n"); |
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malloc_active--; |
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THREAD_UNLOCK(); |
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_MALLOC_UNLOCK(); |
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return (0); |
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} |
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r = imalloc(size); |
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UTRACE(0, size, r); |
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malloc_active--; |
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THREAD_UNLOCK(); |
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_MALLOC_UNLOCK(); |
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if (malloc_xmalloc && !r) |
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wrterror("out of memory.\n"); |
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return (r); |
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@ -1264,17 +1233,17 @@ void |
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free(void *ptr) |
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{ |
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malloc_func = " in free():"; |
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THREAD_LOCK(); |
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_MALLOC_LOCK(); |
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if (malloc_active++) { |
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wrtwarning("recursive call.\n"); |
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malloc_active--; |
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THREAD_UNLOCK(); |
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_MALLOC_UNLOCK(); |
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return; |
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} |
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ifree(ptr); |
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UTRACE(ptr, 0, 0); |
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malloc_active--; |
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THREAD_UNLOCK(); |
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_MALLOC_UNLOCK(); |
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return; |
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} |
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@ -1284,11 +1253,11 @@ realloc(void *ptr, size_t size) |
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register void *r; |
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malloc_func = " in realloc():"; |
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THREAD_LOCK(); |
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_MALLOC_LOCK(); |
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if (malloc_active++) { |
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wrtwarning("recursive call.\n"); |
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malloc_active--; |
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THREAD_UNLOCK(); |
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_MALLOC_UNLOCK(); |
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return (0); |
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} |
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if (!ptr) { |
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@ -1298,7 +1267,7 @@ realloc(void *ptr, size_t size) |
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} |
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UTRACE(ptr, size, r); |
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malloc_active--; |
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THREAD_UNLOCK(); |
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_MALLOC_UNLOCK(); |
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if (malloc_xmalloc && !r) |
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wrterror("out of memory.\n"); |
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return (r); |
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