#include <glib.h>
#include <pthread.h>
#include <signal.h>
-#include "utils/mono-compiler.h"
-#include "metadata/class-internals.h"
+#include <mono/utils/mono-compiler.h>
+#include <mono/metadata/class-internals.h>
+#include <mono/metadata/object-internals.h>
+
+/*
+ * Turning on heavy statistics will turn off the managed allocator and
+ * the managed write barrier.
+ */
+//#define HEAVY_STATISTICS
+
+/*
+ * If this is set, the nursery is aligned to an address aligned to its size, ie.
+ * a 1MB nursery will be aligned to an address divisible by 1MB. This allows us to
+ * speed up ptr_in_nursery () checks which are very frequent. This requires the
+ * nursery size to be a compile time constant.
+ */
+#define SGEN_ALIGN_NURSERY 1
+
+//#define SGEN_BINARY_PROTOCOL
+
+#define SGEN_MAX_DEBUG_LEVEL 2
#define THREAD_HASH_SIZE 11
+#define GC_BITS_PER_WORD (sizeof (mword) * 8)
+
#define ARCH_THREAD_TYPE pthread_t
#define ARCH_GET_THREAD pthread_self
#define ARCH_THREAD_EQUALS(a,b) pthread_equal (a, b)
#endif
};
+enum {
+ MEMORY_ROLE_GEN0,
+ MEMORY_ROLE_GEN1,
+ MEMORY_ROLE_PINNED,
+ MEMORY_ROLE_INTERNAL
+};
+
+typedef struct _SgenBlock SgenBlock;
+struct _SgenBlock {
+ void *next;
+ unsigned char role;
+};
+
+/*
+ * The nursery section and the major copying collector's sections use
+ * this struct.
+ */
+typedef struct _GCMemSection GCMemSection;
+struct _GCMemSection {
+ SgenBlock block;
+ char *data;
+ mword size;
+ /* pointer where more data could be allocated if it fits */
+ char *next_data;
+ char *end_data;
+ /*
+ * scan starts is an array of pointers to objects equally spaced in the allocation area
+ * They let use quickly find pinned objects from pinning pointers.
+ */
+ char **scan_starts;
+ /* in major collections indexes in the pin_queue for objects that pin this section */
+ void **pin_queue_start;
+ int pin_queue_num_entries;
+ unsigned short num_scan_start;
+ gboolean is_to_space;
+};
+
+#define SGEN_SIZEOF_GC_MEM_SECTION ((sizeof (GCMemSection) + 7) & ~7)
+
+/*
+ * to quickly find the head of an object pinned by a conservative
+ * address we keep track of the objects allocated for each
+ * SGEN_SCAN_START_SIZE memory chunk in the nursery or other memory
+ * sections. Larger values have less memory overhead and bigger
+ * runtime cost. 4-8 KB are reasonable values.
+ */
+#define SGEN_SCAN_START_SIZE (4096*2)
+
+/*
+ * Objects bigger then this go into the large object space. This size
+ * has a few constraints. It must fit into the major heap, which in
+ * the case of the copying collector means that it must fit into a
+ * pinned chunk. It must also play well with the GC descriptors, some
+ * of which (DESC_TYPE_RUN_LENGTH, DESC_TYPE_SMALL_BITMAP) encode the
+ * object size.
+ */
+#define SGEN_MAX_SMALL_OBJ_SIZE 8000
+
+/* This is also the MAJOR_SECTION_SIZE for the copying major
+ collector */
+#define SGEN_PINNED_CHUNK_SIZE (128 * 1024)
+
+#define SGEN_PINNED_CHUNK_FOR_PTR(o) ((SgenBlock*)(((mword)(o)) & ~(SGEN_PINNED_CHUNK_SIZE - 1)))
+
+typedef struct _SgenPinnedChunk SgenPinnedChunk;
+
#ifdef __APPLE__
-static int suspend_signal_num = SIGXFSZ;
+const static int suspend_signal_num = SIGXFSZ;
#else
-static int suspend_signal_num = SIGPWR;
+const static int suspend_signal_num = SIGPWR;
#endif
-static int restart_signal_num = SIGXCPU;
+const static int restart_signal_num = SIGXCPU;
/*
* Recursion is not allowed for the thread lock.
#define LOCK_INTERRUPTION pthread_mutex_lock (&interruption_mutex)
#define UNLOCK_INTERRUPTION pthread_mutex_unlock (&interruption_mutex)
+#define SGEN_CAS_PTR InterlockedCompareExchangePointer
+#define SGEN_ATOMIC_ADD(x,i) do { \
+ int __old_x; \
+ do { \
+ __old_x = (x); \
+ } while (InterlockedCompareExchange (&(x), __old_x + (i), __old_x) != __old_x); \
+ } while (0)
+
/* non-pthread will need to provide their own version of start/stop */
#define USE_SIGNAL_BASED_START_STOP_WORLD 1
/* we intercept pthread_create calls to know which threads exist */
#define USE_PTHREAD_INTERCEPT 1
-#define MAX_DEBUG_LEVEL 2
-#define DEBUG(level,a) do {if (G_UNLIKELY ((level) <= MAX_DEBUG_LEVEL && (level) <= gc_debug_level)) a;} while (0)
+#ifdef HEAVY_STATISTICS
+#define HEAVY_STAT(x) x
+
+extern long long stat_objects_alloced_degraded;
+extern long long stat_bytes_alloced_degraded;
+extern long long stat_copy_object_called_major;
+extern long long stat_objects_copied_major;
+#else
+#define HEAVY_STAT(x)
+#endif
+
+#define SGEN_ALLOC_ALIGN 8
+#define SGEN_ALLOC_ALIGN_BITS 3
+
+#define SGEN_ALIGN_UP(s) (((s)+(SGEN_ALLOC_ALIGN-1)) & ~(SGEN_ALLOC_ALIGN-1))
+
+#ifdef SGEN_ALIGN_NURSERY
+#define SGEN_PTR_IN_NURSERY(p,bits,start,end) (((mword)(p) & ~((1 << (bits)) - 1)) == (mword)(start))
+#else
+#define SGEN_PTR_IN_NURSERY(p,bits,start,end) ((char*)(p) >= (start) && (char*)(p) < (end))
+#endif
+
+/* Structure that corresponds to a MonoVTable: desc is a mword so requires
+ * no cast from a pointer to an integer
+ */
+typedef struct {
+ MonoClass *klass;
+ mword desc;
+} GCVTable;
+
+/* these bits are set in the object vtable: we could merge them since an object can be
+ * either pinned or forwarded but not both.
+ * We store them in the vtable slot because the bits are used in the sync block for
+ * other purposes: if we merge them and alloc the sync blocks aligned to 8 bytes, we can change
+ * this and use bit 3 in the syncblock (with the lower two bits both set for forwarded, that
+ * would be an invalid combination for the monitor and hash code).
+ * The values are already shifted.
+ * The forwarding address is stored in the sync block.
+ */
+#define SGEN_FORWARDED_BIT 1
+#define SGEN_PINNED_BIT 2
+#define SGEN_VTABLE_BITS_MASK 0x3
+
+/* returns NULL if not forwarded, or the forwarded address */
+#define SGEN_OBJECT_IS_FORWARDED(obj) (((mword*)(obj))[0] & SGEN_FORWARDED_BIT ? (void*)(((mword*)(obj))[0] & ~SGEN_VTABLE_BITS_MASK) : NULL)
+#define SGEN_OBJECT_IS_PINNED(obj) (((mword*)(obj))[0] & SGEN_PINNED_BIT)
+
+/* set the forwarded address fw_addr for object obj */
+#define SGEN_FORWARD_OBJECT(obj,fw_addr) do { \
+ ((mword*)(obj))[0] = (mword)(fw_addr) | SGEN_FORWARDED_BIT; \
+ } while (0)
+#define SGEN_PIN_OBJECT(obj) do { \
+ ((mword*)(obj))[0] |= SGEN_PINNED_BIT; \
+ } while (0)
+#define SGEN_UNPIN_OBJECT(obj) do { \
+ ((mword*)(obj))[0] &= ~SGEN_PINNED_BIT; \
+ } while (0)
+
+/*
+ * Since we set bits in the vtable, use the macro to load it from the pointer to
+ * an object that is potentially pinned.
+ */
+#define SGEN_LOAD_VTABLE(addr) ((*(mword*)(addr)) & ~SGEN_VTABLE_BITS_MASK)
+
+/*
+ * ######################################################################
+ * ######## GC descriptors
+ * ######################################################################
+ * Used to quickly get the info the GC needs about an object: size and
+ * where the references are held.
+ */
+#define OBJECT_HEADER_WORDS (sizeof(MonoObject)/sizeof(gpointer))
+#define LOW_TYPE_BITS 3
+#define SMALL_BITMAP_SHIFT 16
+#define SMALL_BITMAP_SIZE (GC_BITS_PER_WORD - SMALL_BITMAP_SHIFT)
+#define VECTOR_INFO_SHIFT 14
+#define VECTOR_ELSIZE_SHIFT 3
+#define LARGE_BITMAP_SIZE (GC_BITS_PER_WORD - LOW_TYPE_BITS)
+#define MAX_ELEMENT_SIZE 0x3ff
+#define VECTOR_SUBTYPE_PTRFREE (DESC_TYPE_V_PTRFREE << VECTOR_INFO_SHIFT)
+#define VECTOR_SUBTYPE_REFS (DESC_TYPE_V_REFS << VECTOR_INFO_SHIFT)
+#define VECTOR_SUBTYPE_RUN_LEN (DESC_TYPE_V_RUN_LEN << VECTOR_INFO_SHIFT)
+#define VECTOR_SUBTYPE_BITMAP (DESC_TYPE_V_BITMAP << VECTOR_INFO_SHIFT)
+
+/* objects are aligned to 8 bytes boundaries
+ * A descriptor is a pointer in MonoVTable, so 32 or 64 bits of size.
+ * The low 3 bits define the type of the descriptor. The other bits
+ * depend on the type.
+ * As a general rule the 13 remaining low bits define the size, either
+ * of the whole object or of the elements in the arrays. While for objects
+ * the size is already in bytes, for arrays we need to shift, because
+ * array elements might be smaller than 8 bytes. In case of arrays, we
+ * use two bits to describe what the additional high bits represents,
+ * so the default behaviour can handle element sizes less than 2048 bytes.
+ * The high 16 bits, if 0 it means the object is pointer-free.
+ * This design should make it easy and fast to skip over ptr-free data.
+ * The first 4 types should cover >95% of the objects.
+ * Note that since the size of objects is limited to 64K, larger objects
+ * will be allocated in the large object heap.
+ * If we want 4-bytes alignment, we need to put vector and small bitmap
+ * inside complex.
+ */
+enum {
+ /*
+ * We don't use 0 so that 0 isn't a valid GC descriptor. No
+ * deep reason for this other than to be able to identify a
+ * non-inited descriptor for debugging.
+ *
+ * If an object contains no references, its GC descriptor is
+ * always DESC_TYPE_RUN_LENGTH, without a size, no exceptions.
+ * This is so that we can quickly check for that in
+ * copy_object_no_checks(), without having to fetch the
+ * object's class.
+ */
+ DESC_TYPE_RUN_LENGTH = 1, /* 15 bits aligned byte size | 1-3 (offset, numptr) bytes tuples */
+ DESC_TYPE_SMALL_BITMAP, /* 15 bits aligned byte size | 16-48 bit bitmap */
+ DESC_TYPE_COMPLEX, /* index for bitmap into complex_descriptors */
+ DESC_TYPE_VECTOR, /* 10 bits element size | 1 bit array | 2 bits desc | element desc */
+ DESC_TYPE_ARRAY, /* 10 bits element size | 1 bit array | 2 bits desc | element desc */
+ DESC_TYPE_LARGE_BITMAP, /* | 29-61 bitmap bits */
+ DESC_TYPE_COMPLEX_ARR, /* index for bitmap into complex_descriptors */
+ /* subtypes for arrays and vectors */
+ DESC_TYPE_V_PTRFREE = 0,/* there are no refs: keep first so it has a zero value */
+ DESC_TYPE_V_REFS, /* all the array elements are refs */
+ DESC_TYPE_V_RUN_LEN, /* elements are run-length encoded as DESC_TYPE_RUN_LENGTH */
+ DESC_TYPE_V_BITMAP /* elements are as the bitmap in DESC_TYPE_SMALL_BITMAP */
+};
+
+#define SGEN_VTABLE_HAS_REFERENCES(vt) (((MonoVTable*)(vt))->gc_descr != (void*)DESC_TYPE_RUN_LENGTH)
+
+/* helper macros to scan and traverse objects, macros because we resue them in many functions */
+#define OBJ_RUN_LEN_SIZE(size,desc,obj) do { \
+ (size) = ((desc) & 0xfff8) >> 1; \
+ } while (0)
+
+#define OBJ_BITMAP_SIZE(size,desc,obj) do { \
+ (size) = ((desc) & 0xfff8) >> 1; \
+ } while (0)
+
+//#define PREFETCH(addr) __asm__ __volatile__ (" prefetchnta %0": : "m"(*(char *)(addr)))
+#define PREFETCH(addr)
+
+/* code using these macros must define a HANDLE_PTR(ptr) macro that does the work */
+#define OBJ_RUN_LEN_FOREACH_PTR(desc,obj) do { \
+ if ((desc) & 0xffff0000) { \
+ /* there are pointers */ \
+ void **_objptr_end; \
+ void **_objptr = (void**)(obj); \
+ _objptr += ((desc) >> 16) & 0xff; \
+ _objptr_end = _objptr + (((desc) >> 24) & 0xff); \
+ while (_objptr < _objptr_end) { \
+ HANDLE_PTR (_objptr, (obj)); \
+ _objptr++; \
+ } \
+ } \
+ } while (0)
+
+/* a bitmap desc means that there are pointer references or we'd have
+ * choosen run-length, instead: add an assert to check.
+ */
+#define OBJ_BITMAP_FOREACH_PTR(desc,obj) do { \
+ /* there are pointers */ \
+ void **_objptr = (void**)(obj); \
+ gsize _bmap = (desc) >> 16; \
+ _objptr += OBJECT_HEADER_WORDS; \
+ while (_bmap) { \
+ if ((_bmap & 1)) { \
+ HANDLE_PTR (_objptr, (obj)); \
+ } \
+ _bmap >>= 1; \
+ ++_objptr; \
+ } \
+ } while (0)
+
+#define OBJ_LARGE_BITMAP_FOREACH_PTR(vt,obj) do { \
+ /* there are pointers */ \
+ void **_objptr = (void**)(obj); \
+ gsize _bmap = (vt)->desc >> LOW_TYPE_BITS; \
+ _objptr += OBJECT_HEADER_WORDS; \
+ while (_bmap) { \
+ if ((_bmap & 1)) { \
+ HANDLE_PTR (_objptr, (obj)); \
+ } \
+ _bmap >>= 1; \
+ ++_objptr; \
+ } \
+ } while (0)
+
+gsize* mono_sgen_get_complex_descriptor (GCVTable *vt) MONO_INTERNAL;
+
+#define OBJ_COMPLEX_FOREACH_PTR(vt,obj) do { \
+ /* there are pointers */ \
+ void **_objptr = (void**)(obj); \
+ gsize *bitmap_data = mono_sgen_get_complex_descriptor ((vt)); \
+ int bwords = (*bitmap_data) - 1; \
+ void **start_run = _objptr; \
+ bitmap_data++; \
+ if (0) { \
+ MonoObject *myobj = (MonoObject*)obj; \
+ g_print ("found %d at %p (0x%zx): %s.%s\n", bwords, (obj), (vt)->desc, myobj->vtable->klass->name_space, myobj->vtable->klass->name); \
+ } \
+ while (bwords-- > 0) { \
+ gsize _bmap = *bitmap_data++; \
+ _objptr = start_run; \
+ /*g_print ("bitmap: 0x%x/%d at %p\n", _bmap, bwords, _objptr);*/ \
+ while (_bmap) { \
+ if ((_bmap & 1)) { \
+ HANDLE_PTR (_objptr, (obj)); \
+ } \
+ _bmap >>= 1; \
+ ++_objptr; \
+ } \
+ start_run += GC_BITS_PER_WORD; \
+ } \
+ } while (0)
+
+/* this one is untested */
+#define OBJ_COMPLEX_ARR_FOREACH_PTR(vt,obj) do { \
+ /* there are pointers */ \
+ gsize *mbitmap_data = mono_sgen_get_complex_descriptor ((vt)); \
+ int mbwords = (*mbitmap_data++) - 1; \
+ int el_size = mono_array_element_size (vt->klass); \
+ char *e_start = (char*)(obj) + G_STRUCT_OFFSET (MonoArray, vector); \
+ char *e_end = e_start + el_size * mono_array_length_fast ((MonoArray*)(obj)); \
+ if (0) \
+ g_print ("found %d at %p (0x%zx): %s.%s\n", mbwords, (obj), (vt)->desc, vt->klass->name_space, vt->klass->name); \
+ while (e_start < e_end) { \
+ void **_objptr = (void**)e_start; \
+ gsize *bitmap_data = mbitmap_data; \
+ unsigned int bwords = mbwords; \
+ while (bwords-- > 0) { \
+ gsize _bmap = *bitmap_data++; \
+ void **start_run = _objptr; \
+ /*g_print ("bitmap: 0x%x\n", _bmap);*/ \
+ while (_bmap) { \
+ if ((_bmap & 1)) { \
+ HANDLE_PTR (_objptr, (obj)); \
+ } \
+ _bmap >>= 1; \
+ ++_objptr; \
+ } \
+ _objptr = start_run + GC_BITS_PER_WORD; \
+ } \
+ e_start += el_size; \
+ } \
+ } while (0)
+
+#define OBJ_VECTOR_FOREACH_PTR(vt,obj) do { \
+ /* note: 0xffffc000 excludes DESC_TYPE_V_PTRFREE */ \
+ if ((vt)->desc & 0xffffc000) { \
+ int el_size = ((vt)->desc >> 3) & MAX_ELEMENT_SIZE; \
+ /* there are pointers */ \
+ int etype = (vt)->desc & 0xc000; \
+ if (etype == (DESC_TYPE_V_REFS << 14)) { \
+ void **p = (void**)((char*)(obj) + G_STRUCT_OFFSET (MonoArray, vector)); \
+ void **end_refs = (void**)((char*)p + el_size * mono_array_length_fast ((MonoArray*)(obj))); \
+ /* Note: this code can handle also arrays of struct with only references in them */ \
+ while (p < end_refs) { \
+ HANDLE_PTR (p, (obj)); \
+ ++p; \
+ } \
+ } else if (etype == DESC_TYPE_V_RUN_LEN << 14) { \
+ int offset = ((vt)->desc >> 16) & 0xff; \
+ int num_refs = ((vt)->desc >> 24) & 0xff; \
+ char *e_start = (char*)(obj) + G_STRUCT_OFFSET (MonoArray, vector); \
+ char *e_end = e_start + el_size * mono_array_length_fast ((MonoArray*)(obj)); \
+ while (e_start < e_end) { \
+ void **p = (void**)e_start; \
+ int i; \
+ p += offset; \
+ for (i = 0; i < num_refs; ++i) { \
+ HANDLE_PTR (p + i, (obj)); \
+ } \
+ e_start += el_size; \
+ } \
+ } else if (etype == DESC_TYPE_V_BITMAP << 14) { \
+ char *e_start = (char*)(obj) + G_STRUCT_OFFSET (MonoArray, vector); \
+ char *e_end = e_start + el_size * mono_array_length_fast ((MonoArray*)(obj)); \
+ while (e_start < e_end) { \
+ void **p = (void**)e_start; \
+ gsize _bmap = (vt)->desc >> 16; \
+ /* Note: there is no object header here to skip */ \
+ while (_bmap) { \
+ if ((_bmap & 1)) { \
+ HANDLE_PTR (p, (obj)); \
+ } \
+ _bmap >>= 1; \
+ ++p; \
+ } \
+ e_start += el_size; \
+ } \
+ } \
+ } \
+ } while (0)
+
+typedef struct _SgenInternalAllocator SgenInternalAllocator;
+
+#define SGEN_GRAY_QUEUE_SECTION_SIZE (128 - 3)
+
+/*
+ * This is a stack now instead of a queue, so the most recently added items are removed
+ * first, improving cache locality, and keeping the stack size manageable.
+ */
+typedef struct _GrayQueueSection GrayQueueSection;
+struct _GrayQueueSection {
+ int end;
+ GrayQueueSection *next;
+ char *objects [SGEN_GRAY_QUEUE_SECTION_SIZE];
+};
+
+typedef struct _SgenGrayQueue SgenGrayQueue;
+
+typedef void (*GrayQueueAllocPrepareFunc) (SgenGrayQueue*);
+
+struct _SgenGrayQueue {
+ SgenInternalAllocator *allocator;
+ GrayQueueSection *first;
+ GrayQueueSection *free_list;
+ int balance;
+ GrayQueueAllocPrepareFunc alloc_prepare_func;
+ void *alloc_prepare_data;
+};
+
+#if SGEN_MAX_DEBUG_LEVEL >= 9
+#define GRAY_OBJECT_ENQUEUE gray_object_enqueue
+#define GRAY_OBJECT_DEQUEUE(queue,o) ((o) = gray_object_dequeue ((queue)))
+#else
+#define GRAY_OBJECT_ENQUEUE(queue,o) do { \
+ if (G_UNLIKELY (!(queue)->first || (queue)->first->end == SGEN_GRAY_QUEUE_SECTION_SIZE)) \
+ mono_sgen_gray_object_enqueue ((queue), (o)); \
+ else \
+ (queue)->first->objects [(queue)->first->end++] = (o); \
+ } while (0)
+#define GRAY_OBJECT_DEQUEUE(queue,o) do { \
+ if (!(queue)->first) \
+ (o) = NULL; \
+ else if (G_UNLIKELY ((queue)->first->end == 1)) \
+ (o) = mono_sgen_gray_object_dequeue ((queue)); \
+ else \
+ (o) = (queue)->first->objects [--(queue)->first->end]; \
+ } while (0)
+#endif
+
+void mono_sgen_gray_object_enqueue (SgenGrayQueue *queue, char *obj) MONO_INTERNAL;
+char* mono_sgen_gray_object_dequeue (SgenGrayQueue *queue) MONO_INTERNAL;
+
+typedef void (*IterateObjectCallbackFunc) (char*, size_t, void*);
+
+void* mono_sgen_alloc_os_memory (size_t size, int activate) MONO_INTERNAL;
+void* mono_sgen_alloc_os_memory_aligned (mword size, mword alignment, gboolean activate) MONO_INTERNAL;
+void mono_sgen_free_os_memory (void *addr, size_t size) MONO_INTERNAL;
int mono_sgen_thread_handshake (int signum) MONO_INTERNAL;
SgenThreadInfo* mono_sgen_thread_info_lookup (ARCH_THREAD_TYPE id) MONO_INTERNAL;
SgenThreadInfo** mono_sgen_get_thread_table (void) MONO_INTERNAL;
void mono_sgen_wait_for_suspend_ack (int count) MONO_INTERNAL;
-#endif /* __MONO_SGENGC_H__ */
+gboolean mono_sgen_is_worker_thread (pthread_t thread) MONO_INTERNAL;
+
+void mono_sgen_update_heap_boundaries (mword low, mword high) MONO_INTERNAL;
+
+void mono_sgen_register_major_sections_alloced (int num_sections) MONO_INTERNAL;
+mword mono_sgen_get_minor_collection_allowance (void) MONO_INTERNAL;
+
+void mono_sgen_scan_area_with_callback (char *start, char *end, IterateObjectCallbackFunc callback, void *data) MONO_INTERNAL;
+void mono_sgen_check_section_scan_starts (GCMemSection *section) MONO_INTERNAL;
+
+/* Keep in sync with mono_sgen_dump_internal_mem_usage() in dump_heap()! */
+enum {
+ INTERNAL_MEM_MANAGED,
+ INTERNAL_MEM_PIN_QUEUE,
+ INTERNAL_MEM_FRAGMENT,
+ INTERNAL_MEM_SECTION,
+ INTERNAL_MEM_SCAN_STARTS,
+ INTERNAL_MEM_FIN_TABLE,
+ INTERNAL_MEM_FINALIZE_ENTRY,
+ INTERNAL_MEM_DISLINK_TABLE,
+ INTERNAL_MEM_DISLINK,
+ INTERNAL_MEM_ROOTS_TABLE,
+ INTERNAL_MEM_ROOT_RECORD,
+ INTERNAL_MEM_STATISTICS,
+ INTERNAL_MEM_REMSET,
+ INTERNAL_MEM_GRAY_QUEUE,
+ INTERNAL_MEM_STORE_REMSET,
+ INTERNAL_MEM_MS_TABLES,
+ INTERNAL_MEM_MS_BLOCK_INFO,
+ INTERNAL_MEM_EPHEMERON_LINK,
+ INTERNAL_MEM_WORKER_DATA,
+ INTERNAL_MEM_MAX
+};
+#define SGEN_INTERNAL_FREELIST_NUM_SLOTS 30
+
+struct _SgenInternalAllocator {
+ SgenPinnedChunk *chunk_list;
+ SgenPinnedChunk *free_lists [SGEN_INTERNAL_FREELIST_NUM_SLOTS];
+ void *delayed_free_lists [SGEN_INTERNAL_FREELIST_NUM_SLOTS];
+ long small_internal_mem_bytes [INTERNAL_MEM_MAX];
+};
+
+void mono_sgen_init_internal_allocator (void) MONO_INTERNAL;
+
+SgenInternalAllocator* mono_sgen_get_unmanaged_allocator (void) MONO_INTERNAL;
+
+const char* mono_sgen_internal_mem_type_name (int type) MONO_INTERNAL;
+void mono_sgen_report_internal_mem_usage (void) MONO_INTERNAL;
+void mono_sgen_report_internal_mem_usage_full (SgenInternalAllocator *alc) MONO_INTERNAL;
+void mono_sgen_dump_internal_mem_usage (FILE *heap_dump_file) MONO_INTERNAL;
+void mono_sgen_dump_section (GCMemSection *section, const char *type) MONO_INTERNAL;
+void mono_sgen_dump_occupied (char *start, char *end, char *section_start) MONO_INTERNAL;
+
+void mono_sgen_register_moved_object (void *obj, void *destination) MONO_INTERNAL;
+
+void mono_sgen_register_fixed_internal_mem_type (int type, size_t size) MONO_INTERNAL;
+
+void* mono_sgen_alloc_internal (int type) MONO_INTERNAL;
+void mono_sgen_free_internal (void *addr, int type) MONO_INTERNAL;
+
+void* mono_sgen_alloc_internal_dynamic (size_t size, int type) MONO_INTERNAL;
+void mono_sgen_free_internal_dynamic (void *addr, size_t size, int type) MONO_INTERNAL;
+
+void* mono_sgen_alloc_internal_fixed (SgenInternalAllocator *allocator, int type) MONO_INTERNAL;
+void mono_sgen_free_internal_fixed (SgenInternalAllocator *allocator, void *addr, int type) MONO_INTERNAL;
+
+void* mono_sgen_alloc_internal_full (SgenInternalAllocator *allocator, size_t size, int type) MONO_INTERNAL;
+void mono_sgen_free_internal_full (SgenInternalAllocator *allocator, void *addr, size_t size, int type) MONO_INTERNAL;
+
+void mono_sgen_free_internal_delayed (void *addr, int type, SgenInternalAllocator *thread_allocator) MONO_INTERNAL;
+
+void mono_sgen_debug_printf (int level, const char *format, ...) MONO_INTERNAL;
+
+gboolean mono_sgen_parse_environment_string_extract_number (const char *str, glong *out) MONO_INTERNAL;
+
+void mono_sgen_internal_scan_objects (SgenInternalAllocator *alc, IterateObjectCallbackFunc callback, void *callback_data) MONO_INTERNAL;
+void mono_sgen_internal_scan_pinned_objects (SgenInternalAllocator *alc, IterateObjectCallbackFunc callback, void *callback_data) MONO_INTERNAL;
+
+void** mono_sgen_find_optimized_pin_queue_area (void *start, void *end, int *num) MONO_INTERNAL;
+void mono_sgen_find_section_pin_queue_start_end (GCMemSection *section) MONO_INTERNAL;
+void mono_sgen_pin_objects_in_section (GCMemSection *section, SgenGrayQueue *queue) MONO_INTERNAL;
+
+void mono_sgen_pin_stats_register_object (char *obj, size_t size);
+
+void mono_sgen_add_to_global_remset (gpointer ptr) MONO_INTERNAL;
+
+typedef struct _SgenMajorCollector SgenMajorCollector;
+struct _SgenMajorCollector {
+ size_t section_size;
+ gboolean is_parallel;
+
+ void* (*alloc_heap) (mword nursery_size, mword nursery_align, int nursery_bits);
+ gboolean (*is_object_live) (char *obj);
+ void* (*alloc_small_pinned_obj) (size_t size, gboolean has_references);
+ void* (*alloc_degraded) (MonoVTable *vtable, size_t size);
+ void (*copy_or_mark_object) (void **obj_slot, SgenGrayQueue *queue);
+ void (*minor_scan_object) (char *start, SgenGrayQueue *queue);
+ char* (*minor_scan_vtype) (char *start, mword desc, char* from_start, char* from_end, SgenGrayQueue *queue);
+ void (*major_scan_object) (char *start, SgenGrayQueue *queue);
+ void (*copy_object) (void **obj_slot, SgenGrayQueue *queue);
+ void* (*alloc_object) (int size, gboolean has_references);
+ void (*free_pinned_object) (char *obj, size_t size);
+ void (*iterate_objects) (gboolean non_pinned, gboolean pinned, IterateObjectCallbackFunc callback, void *data);
+ void (*free_non_pinned_object) (char *obj, size_t size);
+ void (*find_pin_queue_start_ends) (SgenGrayQueue *queue);
+ void (*pin_objects) (SgenGrayQueue *queue);
+ void (*init_to_space) (void);
+ void (*sweep) (void);
+ void (*check_scan_starts) (void);
+ void (*dump_heap) (FILE *heap_dump_file);
+ gint64 (*get_used_size) (void);
+ void (*start_nursery_collection) (void);
+ void (*finish_nursery_collection) (void);
+ void (*finish_major_collection) (void);
+ gboolean (*ptr_is_in_non_pinned_space) (char *ptr);
+ gboolean (*obj_is_from_pinned_alloc) (char *obj);
+ void (*report_pinned_memory_usage) (void);
+ int (*get_num_major_sections) (void);
+ gboolean (*handle_gc_param) (const char *opt);
+ void (*print_gc_param_usage) (void);
+};
+
+void mono_sgen_marksweep_init (SgenMajorCollector *collector) MONO_INTERNAL;
+void mono_sgen_marksweep_fixed_init (SgenMajorCollector *collector) MONO_INTERNAL;
+void mono_sgen_marksweep_par_init (SgenMajorCollector *collector) MONO_INTERNAL;
+void mono_sgen_marksweep_fixed_par_init (SgenMajorCollector *collector) MONO_INTERNAL;
+void mono_sgen_copying_init (SgenMajorCollector *collector) MONO_INTERNAL;
+
+/*
+ * This function can be called on an object whose first word, the
+ * vtable field, is not intact. This is necessary for the parallel
+ * collector.
+ */
+static inline guint
+mono_sgen_par_object_get_size (MonoVTable *vtable, MonoObject* o)
+{
+ MonoClass *klass = vtable->klass;
+ /*
+ * We depend on mono_string_length_fast and
+ * mono_array_length_fast not using the object's vtable.
+ */
+ if (klass == mono_defaults.string_class) {
+ return sizeof (MonoString) + 2 * mono_string_length_fast ((MonoString*) o) + 2;
+ } else if (klass->rank) {
+ MonoArray *array = (MonoArray*)o;
+ size_t size = sizeof (MonoArray) + klass->sizes.element_size * mono_array_length_fast (array);
+ if (G_UNLIKELY (array->bounds)) {
+ size += sizeof (mono_array_size_t) - 1;
+ size &= ~(sizeof (mono_array_size_t) - 1);
+ size += sizeof (MonoArrayBounds) * klass->rank;
+ }
+ return size;
+ } else {
+ /* from a created object: the class must be inited already */
+ return klass->instance_size;
+ }
+}
+
+#define mono_sgen_safe_object_get_size(o) mono_sgen_par_object_get_size ((MonoVTable*)SGEN_LOAD_VTABLE ((o)), (o))
+
+#endif /* __MONO_SGENGC_H__ */
projects / mono.git / blobdiff