diff options
Diffstat (limited to 'libc/stdlib/malloc')
| -rw-r--r-- | libc/stdlib/malloc/free.c | 2 | ||||
| -rw-r--r-- | libc/stdlib/malloc/heap.h | 40 | ||||
| -rw-r--r-- | libc/stdlib/malloc/malloc.c | 8 | ||||
| -rw-r--r-- | libc/stdlib/malloc/malloc.h | 61 |
4 files changed, 38 insertions, 73 deletions
diff --git a/libc/stdlib/malloc/free.c b/libc/stdlib/malloc/free.c index e7b6a290a..14d110153 100644 --- a/libc/stdlib/malloc/free.c +++ b/libc/stdlib/malloc/free.c @@ -28,7 +28,7 @@ static void __free_to_heap (void *mem, struct heap_free_area **heap #ifdef HEAP_USE_LOCKING - , malloc_mutex_t *heap_lock + , __UCLIBC_MUTEX_TYPE *heap_lock #endif ) { diff --git a/libc/stdlib/malloc/heap.h b/libc/stdlib/malloc/heap.h index 2f06ab17c..11bd49ffe 100644 --- a/libc/stdlib/malloc/heap.h +++ b/libc/stdlib/malloc/heap.h @@ -13,18 +13,13 @@ #include <features.h> - -/* On multi-threaded systems, the heap includes a lock. */ +#include <bits/uClibc_mutex.h> #ifdef __UCLIBC_HAS_THREADS__ -# include <bits/uClibc_mutex.h> # define HEAP_USE_LOCKING -# define __heap_lock(heap_lock) __UCLIBC_MUTEX_LOCK_CANCEL_UNSAFE(*(heap_lock)) -# define __heap_unlock(heap_lock) __UCLIBC_MUTEX_UNLOCK_CANCEL_UNSAFE(*(heap_lock)) -#else -# define __heap_lock(heap_lock) -# define __heap_unlock(heap_lock) #endif +#define __heap_lock(heap_lock) __UCLIBC_MUTEX_LOCK_CANCEL_UNSAFE(*(heap_lock)) +#define __heap_unlock(heap_lock) __UCLIBC_MUTEX_UNLOCK_CANCEL_UNSAFE(*(heap_lock)) /* The heap allocates in multiples of, and aligned to, HEAP_GRANULARITY. HEAP_GRANULARITY must be a power of 2. Malloc depends on this being the @@ -35,11 +30,9 @@ -/* The HEAP_INIT macro can be used as a static initializer for a heap - variable. The HEAP_INIT_WITH_FA variant is used to initialize a heap +/* The HEAP_INIT_WITH_FA variant is used to initialize a heap with an initial static free-area; its argument FA should be declared using HEAP_DECLARE_STATIC_FREE_AREA. */ -# define HEAP_INIT 0 # define HEAP_INIT_WITH_FA(fa) &fa._fa /* A free-list area `header'. These are actually stored at the _ends_ of @@ -92,34 +85,21 @@ struct heap_free_area #define HEAP_MIN_FREE_AREA_SIZE \ HEAP_ADJUST_SIZE (sizeof (struct heap_free_area) + 32) - -/* branch-prediction macros; they may already be defined by libc. */ -#ifndef likely -#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) -#define likely(cond) __builtin_expect(!!(int)(cond), 1) -#define unlikely(cond) __builtin_expect((int)(cond), 0) -#else -#define likely(cond) (cond) -#define unlikely(cond) (cond) -#endif -#endif /* !likely */ - - /* Define HEAP_DEBUGGING to cause the heap routines to emit debugging info to stderr when the variable __heap_debug is set to true. */ #ifdef HEAP_DEBUGGING -extern int __heap_debug; +extern int __heap_debug attribute_hidden; #define HEAP_DEBUG(heap, str) (__heap_debug ? __heap_dump (heap, str) : 0) #else #define HEAP_DEBUG(heap, str) (void)0 #endif /* Output a text representation of HEAP to stderr, labelling it with STR. */ -extern void __heap_dump (struct heap_free_area *heap, const char *str); +extern void __heap_dump (struct heap_free_area *heap, const char *str) attribute_hidden; /* Do some consistency checks on HEAP. If they fail, output an error message to stderr, and exit. STR is printed with the failure message. */ -extern void __heap_check (struct heap_free_area *heap, const char *str); +extern void __heap_check (struct heap_free_area *heap, const char *str) attribute_hidden; /* Delete the free-area FA from HEAP. */ @@ -216,16 +196,16 @@ __heap_free_area_alloc (struct heap_free_area **heap, /* Allocate and return a block at least *SIZE bytes long from HEAP. *SIZE is adjusted to reflect the actual amount allocated (which may be greater than requested). */ -extern void *__heap_alloc (struct heap_free_area **heap, size_t *size); +extern void *__heap_alloc (struct heap_free_area **heap, size_t *size) attribute_hidden; /* Allocate SIZE bytes at address MEM in HEAP. Return the actual size allocated, or 0 if we failed. */ -extern size_t __heap_alloc_at (struct heap_free_area **heap, void *mem, size_t size); +extern size_t __heap_alloc_at (struct heap_free_area **heap, void *mem, size_t size) attribute_hidden; /* Return the memory area MEM of size SIZE to HEAP. Returns the heap free area into which the memory was placed. */ extern struct heap_free_area *__heap_free (struct heap_free_area **heap, - void *mem, size_t size); + void *mem, size_t size) attribute_hidden; /* Return true if HEAP contains absolutely no memory. */ #define __heap_is_empty(heap) (! (heap)) diff --git a/libc/stdlib/malloc/malloc.c b/libc/stdlib/malloc/malloc.c index d58a7d0ee..550d5b994 100644 --- a/libc/stdlib/malloc/malloc.c +++ b/libc/stdlib/malloc/malloc.c @@ -26,12 +26,12 @@ HEAP_DECLARE_STATIC_FREE_AREA (initial_fa, 256); struct heap_free_area *__malloc_heap = HEAP_INIT_WITH_FA (initial_fa); #ifdef HEAP_USE_LOCKING -malloc_mutex_t __malloc_heap_lock = PTHREAD_MUTEX_INITIALIZER; +__UCLIBC_MUTEX_INIT(__malloc_heap_lock,PTHREAD_MUTEX_INITIALIZER); #endif #if defined(MALLOC_USE_LOCKING) && defined(MALLOC_USE_SBRK) /* A lock protecting our use of sbrk. */ -malloc_mutex_t __malloc_sbrk_lock; +__UCLIBC_MUTEX(__malloc_sbrk_lock); #endif /* MALLOC_USE_LOCKING && MALLOC_USE_SBRK */ @@ -46,7 +46,7 @@ struct malloc_mmb *__malloc_mmapped_blocks = 0; HEAP_DECLARE_STATIC_FREE_AREA (initial_mmb_fa, 48); /* enough for 3 mmbs */ struct heap_free_area *__malloc_mmb_heap = HEAP_INIT_WITH_FA (initial_mmb_fa); #ifdef HEAP_USE_LOCKING -malloc_mutex_t __malloc_mmb_heap_lock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP; +__UCLIBC_MUTEX_INIT(__malloc_mmb_heap_lock,PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP); #endif #endif /* __UCLIBC_UCLINUX_BROKEN_MUNMAP__ */ @@ -59,7 +59,7 @@ malloc_mutex_t __malloc_mmb_heap_lock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP; static void * __malloc_from_heap (size_t size, struct heap_free_area **heap #ifdef HEAP_USE_LOCKING - , malloc_mutex_t *heap_lock + , __UCLIBC_MUTEX_TYPE *heap_lock #endif ) { diff --git a/libc/stdlib/malloc/malloc.h b/libc/stdlib/malloc/malloc.h index 25f7409bf..1ce19f1b3 100644 --- a/libc/stdlib/malloc/malloc.h +++ b/libc/stdlib/malloc/malloc.h @@ -128,69 +128,46 @@ extern int __malloc_mmb_debug; /* Return the size of a malloc allocation, given the user address. */ #define MALLOC_SIZE(addr) (*(size_t *)MALLOC_BASE(addr)) +#include <bits/uClibc_mutex.h> -/* Locking for multithreaded apps. */ #ifdef __UCLIBC_HAS_THREADS__ - -# include <bits/uClibc_mutex.h> - # define MALLOC_USE_LOCKING +#endif -typedef __UCLIBC_MUTEX_TYPE malloc_mutex_t; -# define MALLOC_MUTEX_INIT __UCLIBC_MUTEX_INITIALIZER - -# ifdef MALLOC_USE_SBRK +#ifdef MALLOC_USE_SBRK /* This lock is used to serialize uses of the `sbrk' function (in both malloc and free, sbrk may be used several times in succession, and things will break if these multiple calls are interleaved with another thread's use of sbrk!). */ -extern malloc_mutex_t __malloc_sbrk_lock; +__UCLIBC_MUTEX_EXTERN(__malloc_sbrk_lock) attribute_hidden; # define __malloc_lock_sbrk() __UCLIBC_MUTEX_LOCK_CANCEL_UNSAFE (__malloc_sbrk_lock) # define __malloc_unlock_sbrk() __UCLIBC_MUTEX_UNLOCK_CANCEL_UNSAFE (__malloc_sbrk_lock) -# endif /* MALLOC_USE_SBRK */ - -#else /* !__UCLIBC_HAS_THREADS__ */ - -/* Without threads, mutex operations are a nop. */ +#else # define __malloc_lock_sbrk() (void)0 # define __malloc_unlock_sbrk() (void)0 - -#endif /* __UCLIBC_HAS_THREADS__ */ - - -/* branch-prediction macros; they may already be defined by libc. */ -#ifndef likely -#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) -#define likely(cond) __builtin_expect(!!(int)(cond), 1) -#define unlikely(cond) __builtin_expect((int)(cond), 0) -#else -#define likely(cond) (cond) -#define unlikely(cond) (cond) -#endif -#endif /* !likely */ - +#endif /* MALLOC_USE_SBRK */ /* Define MALLOC_DEBUGGING to cause malloc to emit debugging info to stderr when the variable __malloc_debug is set to true. */ #ifdef MALLOC_DEBUGGING -extern void __malloc_debug_init (void); +extern void __malloc_debug_init (void) attribute_hidden; /* The number of spaces in a malloc debug indent level. */ #define MALLOC_DEBUG_INDENT_SIZE 3 -extern int __malloc_debug, __malloc_check; +extern int __malloc_debug attribute_hidden, __malloc_check attribute_hidden; # define MALLOC_DEBUG(indent, fmt, args...) \ (__malloc_debug ? __malloc_debug_printf (indent, fmt , ##args) : 0) # define MALLOC_DEBUG_INDENT(indent) \ (__malloc_debug ? __malloc_debug_indent (indent) : 0) -extern int __malloc_debug_cur_indent; +extern int __malloc_debug_cur_indent attribute_hidden; /* Print FMT and args indented at the current debug print level, followed by a newline, and change the level by INDENT. */ -extern void __malloc_debug_printf (int indent, const char *fmt, ...); +extern void __malloc_debug_printf (int indent, const char *fmt, ...) attribute_hidden; /* Change the current debug print level by INDENT, and return the value. */ #define __malloc_debug_indent(indent) (__malloc_debug_cur_indent += indent) @@ -220,10 +197,18 @@ extern void __malloc_debug_printf (int indent, const char *fmt, ...); /* The malloc heap. */ -extern struct heap_free_area *__malloc_heap; +extern struct heap_free_area *__malloc_heap attribute_hidden; #ifdef __UCLIBC_HAS_THREADS__ -extern malloc_mutex_t __malloc_heap_lock; -#ifdef __UCLIBC_UCLINUX_BROKEN_MUNMAP__ -extern malloc_mutex_t __malloc_mmb_heap_lock; -#endif +__UCLIBC_MUTEX_EXTERN(__malloc_heap_lock) +# ifndef __LINUXTHREADS_OLD__ + attribute_hidden +# endif + ; +# ifdef __UCLIBC_UCLINUX_BROKEN_MUNMAP__ +__UCLIBC_MUTEX_EXTERN(__malloc_mmb_heap_lock) +# ifndef __LINUXTHREADS_OLD__ + attribute_hidden +# endif + ; +# endif #endif |