diff options
Diffstat (limited to '')
| -rw-r--r-- | src/lib/libc/include/thread_private.h | 70 | ||||
| -rw-r--r-- | src/lib/libc/stdlib/abort.c | 10 | ||||
| -rw-r--r-- | src/lib/libc/stdlib/malloc.c | 57 |
3 files changed, 44 insertions, 93 deletions
diff --git a/src/lib/libc/include/thread_private.h b/src/lib/libc/include/thread_private.h index 89faade556..0b0be6cb38 100644 --- a/src/lib/libc/include/thread_private.h +++ b/src/lib/libc/include/thread_private.h | |||
| @@ -1,4 +1,4 @@ | |||
| 1 | /* $OpenBSD: thread_private.h,v 1.13 2002/11/03 23:58:39 marc Exp $ */ | 1 | /* $OpenBSD: thread_private.h,v 1.14 2002/11/05 22:19:55 marc Exp $ */ |
| 2 | 2 | ||
| 3 | #ifndef _THREAD_PRIVATE_H_ | 3 | #ifndef _THREAD_PRIVATE_H_ |
| 4 | #define _THREAD_PRIVATE_H_ | 4 | #define _THREAD_PRIVATE_H_ |
| @@ -18,19 +18,7 @@ extern int __isthreaded; | |||
| 18 | * Use WEAK_NAME(n) to get a libc-private name for n (_weak_n), | 18 | * Use WEAK_NAME(n) to get a libc-private name for n (_weak_n), |
| 19 | * WEAK_ALIAS(n) to generate the weak symbol n pointing to _weak_n, | 19 | * WEAK_ALIAS(n) to generate the weak symbol n pointing to _weak_n, |
| 20 | * WEAK_PROTOTYPE(n) to generate a prototype for _weak_n (based on n). | 20 | * WEAK_PROTOTYPE(n) to generate a prototype for _weak_n (based on n). |
| 21 | * | ||
| 22 | * If the symbol _NO_WEAK_ALIASES is defined, then symbols will be | ||
| 23 | */ | 21 | */ |
| 24 | |||
| 25 | #ifdef _NO_WEAK_ALIASES | ||
| 26 | #ifdef _THREAD_SAFE | ||
| 27 | #define WEAK_NAME(name) __CONCAT(_weak,name) | ||
| 28 | #else | ||
| 29 | #define WEAK_NAME(name) name | ||
| 30 | #endif | ||
| 31 | #define WEAK_ALIAS(name) /* unavailable */ | ||
| 32 | #define WEAK_PROTOTYPE(name) /* unnecessary */ | ||
| 33 | #else /* !_NO_WEAK_ALIASES */ | ||
| 34 | #define WEAK_NAME(name) __CONCAT(_weak_,name) | 22 | #define WEAK_NAME(name) __CONCAT(_weak_,name) |
| 35 | #define WEAK_ALIAS(name) __weak_alias(name, WEAK_NAME(name)) | 23 | #define WEAK_ALIAS(name) __weak_alias(name, WEAK_NAME(name)) |
| 36 | #ifdef __GNUC__ | 24 | #ifdef __GNUC__ |
| @@ -38,7 +26,6 @@ extern int __isthreaded; | |||
| 38 | #else | 26 | #else |
| 39 | #define WEAK_PROTOTYPE(name) /* typeof() only in gcc */ | 27 | #define WEAK_PROTOTYPE(name) /* typeof() only in gcc */ |
| 40 | #endif | 28 | #endif |
| 41 | #endif /* !_NO_WEAK_ALIASES */ | ||
| 42 | 29 | ||
| 43 | /* | 30 | /* |
| 44 | * These macros help in making persistent storage thread-specific. | 31 | * These macros help in making persistent storage thread-specific. |
| @@ -62,7 +49,7 @@ struct _thread_private_key_struct { | |||
| 62 | void _libc_private_storage_lock(pthread_mutex_t *); | 49 | void _libc_private_storage_lock(pthread_mutex_t *); |
| 63 | void _libc_private_storage_unlock(pthread_mutex_t *); | 50 | void _libc_private_storage_unlock(pthread_mutex_t *); |
| 64 | void * _libc_private_storage(volatile struct _thread_private_key_struct *, | 51 | void * _libc_private_storage(volatile struct _thread_private_key_struct *, |
| 65 | void *, size_t, void *); | 52 | void *, size_t, void *); |
| 66 | 53 | ||
| 67 | /* Declare a module mutex. */ | 54 | /* Declare a module mutex. */ |
| 68 | #define _THREAD_PRIVATE_MUTEX(name) \ | 55 | #define _THREAD_PRIVATE_MUTEX(name) \ |
| @@ -97,18 +84,7 @@ void * _libc_private_storage(volatile struct _thread_private_key_struct *, | |||
| 97 | */ | 84 | */ |
| 98 | #define _THREAD_PRIVATE(keyname, storage, error) \ | 85 | #define _THREAD_PRIVATE(keyname, storage, error) \ |
| 99 | _libc_private_storage(&__THREAD_KEY_NAME(keyname), \ | 86 | _libc_private_storage(&__THREAD_KEY_NAME(keyname), \ |
| 100 | &(storage), sizeof (storage), error) | 87 | &(storage), sizeof (storage), error) |
| 101 | |||
| 102 | /* | ||
| 103 | * Macros for locking and unlocking FILEs. These test if the | ||
| 104 | * process is threaded to avoid locking when not required. | ||
| 105 | */ | ||
| 106 | #ifdef _FLOCK_DEBUG | ||
| 107 | #define FLOCKFILE(fp) _flockfile_debug(fp, __FILE__, __LINE__) | ||
| 108 | #else | ||
| 109 | #define FLOCKFILE(fp) flockfile(fp) | ||
| 110 | #endif | ||
| 111 | #define FUNLOCKFILE(fp) funlockfile(fp) | ||
| 112 | 88 | ||
| 113 | /* | 89 | /* |
| 114 | * File descriptor locking definitions. | 90 | * File descriptor locking definitions. |
| @@ -117,19 +93,33 @@ void * _libc_private_storage(volatile struct _thread_private_key_struct *, | |||
| 117 | #define FD_WRITE 0x2 | 93 | #define FD_WRITE 0x2 |
| 118 | #define FD_RDWR (FD_READ | FD_WRITE) | 94 | #define FD_RDWR (FD_READ | FD_WRITE) |
| 119 | 95 | ||
| 120 | #ifdef _LOCK_DEBUG | 96 | #define _FD_LOCK(_fd,_type,_ts) \ |
| 121 | #define _FD_LOCK(_fd,_type,_ts) _thread_fd_lock_debug(_fd, _type, \ | 97 | _thread_fd_lock(_fd, _type, _ts, __FILE__, __LINE__) |
| 122 | _ts, __FILE__, __LINE__) | 98 | #define _FD_UNLOCK(_fd,_type) \ |
| 123 | #define _FD_UNLOCK(_fd,_type) _thread_fd_unlock_debug(_fd, _type, \ | 99 | _thread_fd_unlock(_fd, _type, __FILE__, __LINE__) |
| 124 | __FILE__, __LINE__) | ||
| 125 | #else | ||
| 126 | #define _FD_LOCK(_fd,_type,_ts) _thread_fd_lock(_fd, _type, _ts) | ||
| 127 | #define _FD_UNLOCK(_fd,_type) _thread_fd_unlock(_fd, _type) | ||
| 128 | #endif | ||
| 129 | 100 | ||
| 130 | int _thread_fd_lock(int, int, struct timespec *); | 101 | int _thread_fd_lock(int, int, struct timespec *, const char *, int); |
| 131 | int _thread_fd_lock_debug(int, int, struct timespec *, char *, int); | 102 | void _thread_fd_unlock(int, int, const char *, int); |
| 132 | void _thread_fd_unlock(int, int); | 103 | |
| 133 | void _thread_fd_unlock_debug(int, int, char *, int); | 104 | /* |
| 105 | * malloc lock/unlock definitions | ||
| 106 | */ | ||
| 107 | # define _MALLOC_LOCK() do { \ | ||
| 108 | if (__isthreaded) \ | ||
| 109 | _thread_malloc_lock(); \ | ||
| 110 | } while (0) | ||
| 111 | # define _MALLOC_UNLOCK() do { \ | ||
| 112 | if (__isthreaded) \ | ||
| 113 | _thread_malloc_unlock();\ | ||
| 114 | } while (0) | ||
| 115 | # define _MALLOC_LOCK_INIT()do { \ | ||
| 116 | if (__isthreaded) \ | ||
| 117 | _thread_malloc_init();\ | ||
| 118 | } while (0) | ||
| 119 | |||
| 120 | |||
| 121 | void _thread_malloc_init(void); | ||
| 122 | void _thread_malloc_lock(void); | ||
| 123 | void _thread_malloc_unlock(void); | ||
| 134 | 124 | ||
| 135 | #endif /* _THREAD_PRIVATE_H_ */ | 125 | #endif /* _THREAD_PRIVATE_H_ */ |
diff --git a/src/lib/libc/stdlib/abort.c b/src/lib/libc/stdlib/abort.c index 7252cd8a8b..a833a1a8b7 100644 --- a/src/lib/libc/stdlib/abort.c +++ b/src/lib/libc/stdlib/abort.c | |||
| @@ -32,7 +32,7 @@ | |||
| 32 | */ | 32 | */ |
| 33 | 33 | ||
| 34 | #if defined(LIBC_SCCS) && !defined(lint) | 34 | #if defined(LIBC_SCCS) && !defined(lint) |
| 35 | static char *rcsid = "$OpenBSD: abort.c,v 1.10 2002/11/03 23:58:39 marc Exp $"; | 35 | static char *rcsid = "$OpenBSD: abort.c,v 1.11 2002/11/05 22:19:55 marc Exp $"; |
| 36 | #endif /* LIBC_SCCS and not lint */ | 36 | #endif /* LIBC_SCCS and not lint */ |
| 37 | 37 | ||
| 38 | #include <signal.h> | 38 | #include <signal.h> |
| @@ -55,11 +55,7 @@ abort() | |||
| 55 | * any errors -- X311J doesn't allow abort to return anyway. | 55 | * any errors -- X311J doesn't allow abort to return anyway. |
| 56 | */ | 56 | */ |
| 57 | sigdelset(&mask, SIGABRT); | 57 | sigdelset(&mask, SIGABRT); |
| 58 | #ifdef _THREAD_SAFE | ||
| 59 | (void)_thread_sys_sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL); | 58 | (void)_thread_sys_sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL); |
| 60 | #else /* _THREAD_SAFE */ | ||
| 61 | (void)sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL); | ||
| 62 | #endif /* _THREAD_SAFE */ | ||
| 63 | 59 | ||
| 64 | /* | 60 | /* |
| 65 | * POSIX requires we flush stdio buffers on abort | 61 | * POSIX requires we flush stdio buffers on abort |
| @@ -80,11 +76,7 @@ abort() | |||
| 80 | * it again, only harder. | 76 | * it again, only harder. |
| 81 | */ | 77 | */ |
| 82 | (void)signal(SIGABRT, SIG_DFL); | 78 | (void)signal(SIGABRT, SIG_DFL); |
| 83 | #ifdef _THREAD_SAFE | ||
| 84 | (void)_thread_sys_sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL); | 79 | (void)_thread_sys_sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL); |
| 85 | #else /* _THREAD_SAFE */ | ||
| 86 | (void)sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL); | ||
| 87 | #endif /* _THREAD_SAFE */ | ||
| 88 | (void)kill(getpid(), SIGABRT); | 80 | (void)kill(getpid(), SIGABRT); |
| 89 | exit(1); | 81 | exit(1); |
| 90 | } | 82 | } |
diff --git a/src/lib/libc/stdlib/malloc.c b/src/lib/libc/stdlib/malloc.c index 2ebc1eff05..3cdacc59b9 100644 --- a/src/lib/libc/stdlib/malloc.c +++ b/src/lib/libc/stdlib/malloc.c | |||
| @@ -8,7 +8,7 @@ | |||
| 8 | */ | 8 | */ |
| 9 | 9 | ||
| 10 | #if defined(LIBC_SCCS) && !defined(lint) | 10 | #if defined(LIBC_SCCS) && !defined(lint) |
| 11 | static char rcsid[] = "$OpenBSD: malloc.c,v 1.50 2002/11/03 23:58:39 marc Exp $"; | 11 | static char rcsid[] = "$OpenBSD: malloc.c,v 1.51 2002/11/05 22:19:55 marc Exp $"; |
| 12 | #endif /* LIBC_SCCS and not lint */ | 12 | #endif /* LIBC_SCCS and not lint */ |
| 13 | 13 | ||
| 14 | /* | 14 | /* |
| @@ -48,6 +48,8 @@ static char rcsid[] = "$OpenBSD: malloc.c,v 1.50 2002/11/03 23:58:39 marc Exp $" | |||
| 48 | #include <fcntl.h> | 48 | #include <fcntl.h> |
| 49 | #include <errno.h> | 49 | #include <errno.h> |
| 50 | 50 | ||
| 51 | #include "thread_private.h" | ||
| 52 | |||
| 51 | /* | 53 | /* |
| 52 | * The basic parameters you can tweak. | 54 | * The basic parameters you can tweak. |
| 53 | * | 55 | * |
| @@ -67,39 +69,6 @@ static char rcsid[] = "$OpenBSD: malloc.c,v 1.50 2002/11/03 23:58:39 marc Exp $" | |||
| 67 | # define malloc_pageshift 13U | 69 | # define malloc_pageshift 13U |
| 68 | #endif /* __OpenBSD__ */ | 70 | #endif /* __OpenBSD__ */ |
| 69 | 71 | ||
| 70 | #ifdef _THREAD_SAFE | ||
| 71 | # include "thread_private.h" | ||
| 72 | # if 0 | ||
| 73 | /* kernel threads */ | ||
| 74 | # include <pthread.h> | ||
| 75 | static pthread_mutex_t malloc_lock; | ||
| 76 | # define THREAD_LOCK() pthread_mutex_lock(&malloc_lock) | ||
| 77 | # define THREAD_UNLOCK() pthread_mutex_unlock(&malloc_lock) | ||
| 78 | # define THREAD_LOCK_INIT() pthread_mutex_init(&malloc_lock, 0); | ||
| 79 | # else | ||
| 80 | /* user threads */ | ||
| 81 | # include "spinlock.h" | ||
| 82 | static spinlock_t malloc_lock = _SPINLOCK_INITIALIZER; | ||
| 83 | # define THREAD_LOCK() if (__isthreaded) _SPINLOCK(&malloc_lock) | ||
| 84 | # define THREAD_UNLOCK() if (__isthreaded) _SPINUNLOCK(&malloc_lock) | ||
| 85 | # define THREAD_LOCK_INIT() | ||
| 86 | /* | ||
| 87 | * Malloc can't use the wrapped write() if it fails very early, so | ||
| 88 | * we use the unwrapped syscall _thread_sys_write() | ||
| 89 | */ | ||
| 90 | # define write _thread_sys_write | ||
| 91 | ssize_t write(int, const void *, size_t); | ||
| 92 | # undef malloc | ||
| 93 | # undef realloc | ||
| 94 | # undef free | ||
| 95 | # endif | ||
| 96 | #else | ||
| 97 | /* no threads */ | ||
| 98 | # define THREAD_LOCK() | ||
| 99 | # define THREAD_UNLOCK() | ||
| 100 | # define THREAD_LOCK_INIT() | ||
| 101 | #endif | ||
| 102 | |||
| 103 | /* | 72 | /* |
| 104 | * No user serviceable parts behind this point. | 73 | * No user serviceable parts behind this point. |
| 105 | * | 74 | * |
| @@ -494,7 +463,7 @@ malloc_init () | |||
| 494 | int i, j; | 463 | int i, j; |
| 495 | int save_errno = errno; | 464 | int save_errno = errno; |
| 496 | 465 | ||
| 497 | THREAD_LOCK_INIT(); | 466 | _MALLOC_LOCK_INIT(); |
| 498 | 467 | ||
| 499 | INIT_MMAP(); | 468 | INIT_MMAP(); |
| 500 | 469 | ||
| @@ -1244,17 +1213,17 @@ malloc(size_t size) | |||
| 1244 | register void *r; | 1213 | register void *r; |
| 1245 | 1214 | ||
| 1246 | malloc_func = " in malloc():"; | 1215 | malloc_func = " in malloc():"; |
| 1247 | THREAD_LOCK(); | 1216 | _MALLOC_LOCK(); |
| 1248 | if (malloc_active++) { | 1217 | if (malloc_active++) { |
| 1249 | wrtwarning("recursive call.\n"); | 1218 | wrtwarning("recursive call.\n"); |
| 1250 | malloc_active--; | 1219 | malloc_active--; |
| 1251 | THREAD_UNLOCK(); | 1220 | _MALLOC_UNLOCK(); |
| 1252 | return (0); | 1221 | return (0); |
| 1253 | } | 1222 | } |
| 1254 | r = imalloc(size); | 1223 | r = imalloc(size); |
| 1255 | UTRACE(0, size, r); | 1224 | UTRACE(0, size, r); |
| 1256 | malloc_active--; | 1225 | malloc_active--; |
| 1257 | THREAD_UNLOCK(); | 1226 | _MALLOC_UNLOCK(); |
| 1258 | if (malloc_xmalloc && !r) | 1227 | if (malloc_xmalloc && !r) |
| 1259 | wrterror("out of memory.\n"); | 1228 | wrterror("out of memory.\n"); |
| 1260 | return (r); | 1229 | return (r); |
| @@ -1264,17 +1233,17 @@ void | |||
| 1264 | free(void *ptr) | 1233 | free(void *ptr) |
| 1265 | { | 1234 | { |
| 1266 | malloc_func = " in free():"; | 1235 | malloc_func = " in free():"; |
| 1267 | THREAD_LOCK(); | 1236 | _MALLOC_LOCK(); |
| 1268 | if (malloc_active++) { | 1237 | if (malloc_active++) { |
| 1269 | wrtwarning("recursive call.\n"); | 1238 | wrtwarning("recursive call.\n"); |
| 1270 | malloc_active--; | 1239 | malloc_active--; |
| 1271 | THREAD_UNLOCK(); | 1240 | _MALLOC_UNLOCK(); |
| 1272 | return; | 1241 | return; |
| 1273 | } | 1242 | } |
| 1274 | ifree(ptr); | 1243 | ifree(ptr); |
| 1275 | UTRACE(ptr, 0, 0); | 1244 | UTRACE(ptr, 0, 0); |
| 1276 | malloc_active--; | 1245 | malloc_active--; |
| 1277 | THREAD_UNLOCK(); | 1246 | _MALLOC_UNLOCK(); |
| 1278 | return; | 1247 | return; |
| 1279 | } | 1248 | } |
| 1280 | 1249 | ||
| @@ -1284,11 +1253,11 @@ realloc(void *ptr, size_t size) | |||
| 1284 | register void *r; | 1253 | register void *r; |
| 1285 | 1254 | ||
| 1286 | malloc_func = " in realloc():"; | 1255 | malloc_func = " in realloc():"; |
| 1287 | THREAD_LOCK(); | 1256 | _MALLOC_LOCK(); |
| 1288 | if (malloc_active++) { | 1257 | if (malloc_active++) { |
| 1289 | wrtwarning("recursive call.\n"); | 1258 | wrtwarning("recursive call.\n"); |
| 1290 | malloc_active--; | 1259 | malloc_active--; |
| 1291 | THREAD_UNLOCK(); | 1260 | _MALLOC_UNLOCK(); |
| 1292 | return (0); | 1261 | return (0); |
| 1293 | } | 1262 | } |
| 1294 | if (!ptr) { | 1263 | if (!ptr) { |
| @@ -1298,7 +1267,7 @@ realloc(void *ptr, size_t size) | |||
| 1298 | } | 1267 | } |
| 1299 | UTRACE(ptr, size, r); | 1268 | UTRACE(ptr, size, r); |
| 1300 | malloc_active--; | 1269 | malloc_active--; |
| 1301 | THREAD_UNLOCK(); | 1270 | _MALLOC_UNLOCK(); |
| 1302 | if (malloc_xmalloc && !r) | 1271 | if (malloc_xmalloc && !r) |
| 1303 | wrterror("out of memory.\n"); | 1272 | wrterror("out of memory.\n"); |
| 1304 | return (r); | 1273 | return (r); |
