diff options
Diffstat (limited to 'malloc/malloc.c')
| -rw-r--r-- | malloc/malloc.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/malloc/malloc.c b/malloc/malloc.c index c2a94a4f8d..840655f4db 100644 --- a/malloc/malloc.c +++ b/malloc/malloc.c @@ -140,7 +140,7 @@ Maximum overhead wastage per allocated chunk: normally 15 bytes - Alignnment demands, plus the minimum allocatable size restriction + Alignment demands, plus the minimum allocatable size restriction make the normal worst-case wastage 15 bytes (i.e., up to 15 more bytes will be allocated than were requested in malloc), with two exceptions: @@ -343,7 +343,7 @@ extern "C" { checking is fairly extensive, and will slow down execution noticeably. Calling malloc_stats or mallinfo with MALLOC_DEBUG set will attempt to check every non-mmapped allocated and free chunk in the - course of computing the summmaries. (By nature, mmapped regions + course of computing the summaries. (By nature, mmapped regions cannot be checked very much automatically.) Setting MALLOC_DEBUG may also be helpful if you are trying to modify @@ -999,7 +999,7 @@ nextchunk-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ the malloc code, but "mem" is the pointer that is returned to the user. "Nextchunk" is the beginning of the next contiguous chunk. - Chunks always begin on even word boundries, so the mem portion + Chunks always begin on even word boundaries, so the mem portion (which is returned to the user) is also on an even word boundary, and thus double-word aligned. @@ -1144,7 +1144,7 @@ typedef struct _arena { } arena; -/* A heap is a single contiguous memory region holding (coalescable) +/* A heap is a single contiguous memory region holding (coalesceable) malloc_chunks. It is allocated with mmap() and always starts at an address aligned to HEAP_MAX_SIZE. Not used unless compiling for multiple threads. */ @@ -1489,6 +1489,8 @@ static unsigned long max_mmapped_mem = 0; +/* Already initialized? */ +int __malloc_initialized; /* Initialization routine. */ @@ -1504,13 +1506,12 @@ void ptmalloc_init __MALLOC_P((void)) #endif { - static int first = 1; #if defined(_LIBC) || defined(MALLOC_HOOKS) const char* s; #endif - if(!first) return; - first = 0; + if(__malloc_initialized) return; + __malloc_initialized = 1; #if defined(_LIBC) /* Initialize the pthreads interface. */ if (__pthread_initialize != NULL) @@ -3589,7 +3590,7 @@ dump_heap(heap) heap_info *heap; malloc_stats: - For all arenas seperately and in total, prints on stderr the + For all arenas separately and in total, prints on stderr the amount of space obtained from the system, and the current number of bytes allocated via malloc (or realloc, etc) but not yet freed. (Note that this is the number of bytes allocated, not the @@ -3964,10 +3965,10 @@ History: Wolfram Gloger (Gloger@lrz.uni-muenchen.de). * Use last_remainder in more cases. * Pack bins using idea from colin@nyx10.cs.du.edu - * Use ordered bins instead of best-fit threshhold + * Use ordered bins instead of best-fit threshold * Eliminate block-local decls to simplify tracing and debugging. * Support another case of realloc via move into top - * Fix error occuring when initial sbrk_base not word-aligned. + * Fix error occurring when initial sbrk_base not word-aligned. * Rely on page size for units instead of SBRK_UNIT to avoid surprises about sbrk alignment conventions. * Add mallinfo, mallopt. Thanks to Raymond Nijssen |