diff options
Diffstat (limited to 'src/pkg/runtime/malloc.h')
| -rw-r--r-- | src/pkg/runtime/malloc.h | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/src/pkg/runtime/malloc.h b/src/pkg/runtime/malloc.h index 5bc80f4df..a85e1af8c 100644 --- a/src/pkg/runtime/malloc.h +++ b/src/pkg/runtime/malloc.h @@ -120,6 +120,12 @@ enum #else MHeapMap_Bits = 20, #endif + + // Max number of threads to run garbage collection. + // 2, 3, and 4 are all plausible maximums depending + // on the hardware details of the machine. The garbage + // collector scales well to 4 cpus. + MaxGcproc = 4, }; // A generic linked list of blocks. (Typically the block is bigger than sizeof(MLink).) @@ -192,7 +198,7 @@ struct MStats uint64 nlookup; // number of pointer lookups uint64 nmalloc; // number of mallocs uint64 nfree; // number of frees - + // Statistics about malloc heap. // protected by mheap.Lock uint64 heap_alloc; // bytes allocated and still in use @@ -210,7 +216,7 @@ struct MStats uint64 mcache_inuse; // MCache structures uint64 mcache_sys; uint64 buckhash_sys; // profiling bucket hash table - + // Statistics about garbage collector. // Protected by stopping the world during GC. uint64 next_gc; // next GC (in heap_alloc time) @@ -219,7 +225,7 @@ struct MStats uint32 numgc; bool enablegc; bool debuggc; - + // Statistics about allocation size classes. struct { uint32 size; @@ -240,7 +246,7 @@ extern MStats mstats; // // class_to_size[i] = largest size in class i // class_to_allocnpages[i] = number of pages to allocate when -// making new objects in class i +// making new objects in class i // class_to_transfercount[i] = number of objects to move when // taking a bunch of objects out of the central lists // and putting them in the thread free list. @@ -279,7 +285,7 @@ struct MCache int64 nmalloc; int64 nfree; } local_by_size[NumSizeClasses]; - + }; void* runtime·MCache_Alloc(MCache *c, int32 sizeclass, uintptr size, int32 zeroed); @@ -352,14 +358,14 @@ struct MHeap byte *arena_start; byte *arena_used; byte *arena_end; - + // central free lists for small size classes. // the union makes sure that the MCentrals are - // spaced 64 bytes apart, so that each MCentral.Lock + // spaced CacheLineSize bytes apart, so that each MCentral.Lock // gets its own cache line. union { MCentral; - byte pad[64]; + byte pad[CacheLineSize]; } central[NumSizeClasses]; FixAlloc spanalloc; // allocator for Span* @@ -387,7 +393,7 @@ int32 runtime·checking; void runtime·markspan(void *v, uintptr size, uintptr n, bool leftover); void runtime·unmarkspan(void *v, uintptr size); bool runtime·blockspecial(void*); -void runtime·setblockspecial(void*); +void runtime·setblockspecial(void*, bool); void runtime·purgecachedstats(M*); enum @@ -400,6 +406,8 @@ enum void runtime·MProf_Malloc(void*, uintptr); void runtime·MProf_Free(void*, uintptr); +int32 runtime·helpgc(bool*); +void runtime·gchelper(void); // Malloc profiling settings. // Must match definition in extern.go. @@ -410,13 +418,5 @@ enum { }; extern int32 runtime·malloc_profile; -typedef struct Finalizer Finalizer; -struct Finalizer -{ - Finalizer *next; // for use by caller of getfinalizer - void (*fn)(void*); - void *arg; - int32 nret; -}; - -Finalizer* runtime·getfinalizer(void*, bool); +bool runtime·getfinalizer(void *p, bool del, void (**fn)(void*), int32 *nret); +void runtime·walkfintab(void (*fn)(void*)); |