*
*/
+#include "private/gc_pmark.h"
/*
* Some simple primitives for allocation with explicit type information.
* since they are not accessible through the current interface.
*/
-#include "private/gc_pmark.h"
#include "gc_typed.h"
-# define TYPD_EXTRA_BYTES (sizeof(word) - EXTRA_BYTES)
+#define TYPD_EXTRA_BYTES (sizeof(word) - EXTRA_BYTES)
STATIC GC_bool GC_explicit_typing_initialized = FALSE;
-STATIC int GC_explicit_kind;
- /* Object kind for objects with indirect */
- /* (possibly extended) descriptors. */
+STATIC int GC_explicit_kind = 0;
+ /* Object kind for objects with indirect */
+ /* (possibly extended) descriptors. */
-STATIC int GC_array_kind;
- /* Object kind for objects with complex */
- /* descriptors and GC_array_mark_proc. */
+STATIC int GC_array_kind = 0;
+ /* Object kind for objects with complex */
+ /* descriptors and GC_array_mark_proc. */
-/* Extended descriptors. GC_typed_mark_proc understands these. */
-/* These are used for simple objects that are larger than what */
-/* can be described by a BITMAP_BITS sized bitmap. */
+/* Extended descriptors. GC_typed_mark_proc understands these. */
+/* These are used for simple objects that are larger than what */
+/* can be described by a BITMAP_BITS sized bitmap. */
typedef struct {
- word ed_bitmap; /* lsb corresponds to first word. */
- GC_bool ed_continued; /* next entry is continuation. */
+ word ed_bitmap; /* lsb corresponds to first word. */
+ GC_bool ed_continued; /* next entry is continuation. */
} ext_descr;
-/* Array descriptors. GC_array_mark_proc understands these. */
-/* We may eventually need to add provisions for headers and */
+/* Array descriptors. GC_array_mark_proc understands these. */
+/* We may eventually need to add provisions for headers and */
/* trailers. Hence we provide for tree structured descriptors, */
-/* though we don't really use them currently. */
+/* though we don't really use them currently. */
typedef union ComplexDescriptor {
- struct LeafDescriptor { /* Describes simple array */
+ struct LeafDescriptor { /* Describes simple array */
word ld_tag;
-# define LEAF_TAG 1
- size_t ld_size; /* bytes per element */
- /* multiple of ALIGNMENT */
- size_t ld_nelements; /* Number of elements. */
- GC_descr ld_descriptor; /* A simple length, bitmap, */
- /* or procedure descriptor. */
+# define LEAF_TAG 1
+ size_t ld_size; /* bytes per element */
+ /* multiple of ALIGNMENT */
+ size_t ld_nelements; /* Number of elements. */
+ GC_descr ld_descriptor; /* A simple length, bitmap, */
+ /* or procedure descriptor. */
} ld;
struct ComplexArrayDescriptor {
word ad_tag;
-# define ARRAY_TAG 2
- size_t ad_nelements;
- union ComplexDescriptor * ad_element_descr;
+# define ARRAY_TAG 2
+ size_t ad_nelements;
+ union ComplexDescriptor * ad_element_descr;
} ad;
struct SequenceDescriptor {
word sd_tag;
-# define SEQUENCE_TAG 3
- union ComplexDescriptor * sd_first;
- union ComplexDescriptor * sd_second;
+# define SEQUENCE_TAG 3
+ union ComplexDescriptor * sd_first;
+ union ComplexDescriptor * sd_second;
} sd;
} complex_descriptor;
#define TAG ld.ld_tag
-STATIC ext_descr * GC_ext_descriptors; /* Points to array of extended */
- /* descriptors. */
+STATIC ext_descr * GC_ext_descriptors = NULL;
+ /* Points to array of extended */
+ /* descriptors. */
-STATIC size_t GC_ed_size = 0; /* Current size of above arrays. */
-# define ED_INITIAL_SIZE 100;
+STATIC size_t GC_ed_size = 0; /* Current size of above arrays. */
+#define ED_INITIAL_SIZE 100
-STATIC size_t GC_avail_descr = 0; /* Next available slot. */
+STATIC size_t GC_avail_descr = 0; /* Next available slot. */
-STATIC int GC_typed_mark_proc_index; /* Indices of my mark */
-STATIC int GC_array_mark_proc_index; /* procedures. */
+STATIC int GC_typed_mark_proc_index = 0; /* Indices of my mark */
+STATIC int GC_array_mark_proc_index = 0; /* procedures. */
-static void GC_push_typed_structures_proc (void)
+STATIC void GC_push_typed_structures_proc(void)
{
- GC_push_all((ptr_t)&GC_ext_descriptors, (ptr_t)&GC_ext_descriptors + sizeof(word));
+ GC_push_all((ptr_t)&GC_ext_descriptors,
+ (ptr_t)&GC_ext_descriptors + sizeof(word));
}
-/* Add a multiword bitmap to GC_ext_descriptors arrays. Return */
-/* starting index. */
-/* Returns -1 on failure. */
-/* Caller does not hold allocation lock. */
+/* Add a multiword bitmap to GC_ext_descriptors arrays. Return */
+/* starting index. */
+/* Returns -1 on failure. */
+/* Caller does not hold allocation lock. */
STATIC signed_word GC_add_ext_descriptor(GC_bitmap bm, word nbits)
{
size_t nwords = divWORDSZ(nbits + WORDSZ-1);
LOCK();
while (GC_avail_descr + nwords >= GC_ed_size) {
- ext_descr * new;
- size_t new_size;
- word ed_size = GC_ed_size;
-
- if (ed_size == 0) {
- GC_push_typed_structures = GC_push_typed_structures_proc;
- UNLOCK();
- new_size = ED_INITIAL_SIZE;
- } else {
- UNLOCK();
- new_size = 2 * ed_size;
- if (new_size > MAX_ENV) return(-1);
- }
- new = (ext_descr *) GC_malloc_atomic(new_size * sizeof(ext_descr));
- if (new == 0) return(-1);
+ ext_descr * new;
+ size_t new_size;
+ word ed_size = GC_ed_size;
+
+ if (ed_size == 0) {
+ GC_push_typed_structures = GC_push_typed_structures_proc;
+ UNLOCK();
+ new_size = ED_INITIAL_SIZE;
+ } else {
+ UNLOCK();
+ new_size = 2 * ed_size;
+ if (new_size > MAX_ENV) return(-1);
+ }
+ new = (ext_descr *) GC_malloc_atomic(new_size * sizeof(ext_descr));
+ if (new == 0) return(-1);
LOCK();
if (ed_size == GC_ed_size) {
if (GC_avail_descr != 0) {
- BCOPY(GC_ext_descriptors, new,
- GC_avail_descr * sizeof(ext_descr));
- }
- GC_ed_size = new_size;
- GC_ext_descriptors = new;
- } /* else another thread already resized it in the meantime */
+ BCOPY(GC_ext_descriptors, new,
+ GC_avail_descr * sizeof(ext_descr));
+ }
+ GC_ed_size = new_size;
+ GC_ext_descriptors = new;
+ } /* else another thread already resized it in the meantime */
}
result = GC_avail_descr;
for (i = 0; i < nwords-1; i++) {
return(result);
}
-/* Table of bitmap descriptors for n word long all pointer objects. */
-GC_descr GC_bm_table[WORDSZ/2];
-
-/* Return a descriptor for the concatenation of 2 nwords long objects, */
-/* each of which is described by descriptor. */
-/* The result is known to be short enough to fit into a bitmap */
-/* descriptor. */
-/* Descriptor is a GC_DS_LENGTH or GC_DS_BITMAP descriptor. */
+/* Table of bitmap descriptors for n word long all pointer objects. */
+STATIC GC_descr GC_bm_table[WORDSZ/2];
+
+/* Return a descriptor for the concatenation of 2 nwords long objects, */
+/* each of which is described by descriptor. */
+/* The result is known to be short enough to fit into a bitmap */
+/* descriptor. */
+/* Descriptor is a GC_DS_LENGTH or GC_DS_BITMAP descriptor. */
STATIC GC_descr GC_double_descr(GC_descr descriptor, word nwords)
{
if ((descriptor & GC_DS_TAGS) == GC_DS_LENGTH) {
STATIC complex_descriptor *
GC_make_sequence_descriptor(complex_descriptor *first,
- complex_descriptor *second);
+ complex_descriptor *second);
-/* Build a descriptor for an array with nelements elements, */
-/* each of which can be described by a simple descriptor. */
-/* We try to optimize some common cases. */
+/* Build a descriptor for an array with nelements elements, */
+/* each of which can be described by a simple descriptor. */
+/* We try to optimize some common cases. */
/* If the result is COMPLEX, then a complex_descr* is returned */
-/* in *complex_d. */
-/* If the result is LEAF, then we built a LeafDescriptor in */
-/* the structure pointed to by leaf. */
-/* The tag in the leaf structure is not set. */
-/* If the result is SIMPLE, then a GC_descr */
-/* is returned in *simple_d. */
-/* If the result is NO_MEM, then */
-/* we failed to allocate the descriptor. */
-/* The implementation knows that GC_DS_LENGTH is 0. */
-/* *leaf, *complex_d, and *simple_d may be used as temporaries */
-/* during the construction. */
-# define COMPLEX 2
-# define LEAF 1
-# define SIMPLE 0
-# define NO_MEM (-1)
+/* in *complex_d. */
+/* If the result is LEAF, then we built a LeafDescriptor in */
+/* the structure pointed to by leaf. */
+/* The tag in the leaf structure is not set. */
+/* If the result is SIMPLE, then a GC_descr */
+/* is returned in *simple_d. */
+/* If the result is NO_MEM, then */
+/* we failed to allocate the descriptor. */
+/* The implementation knows that GC_DS_LENGTH is 0. */
+/* *leaf, *complex_d, and *simple_d may be used as temporaries */
+/* during the construction. */
+#define COMPLEX 2
+#define LEAF 1
+#define SIMPLE 0
+#define NO_MEM (-1)
STATIC int GC_make_array_descriptor(size_t nelements, size_t size,
- GC_descr descriptor, GC_descr *simple_d,
- complex_descriptor **complex_d,
- struct LeafDescriptor * leaf)
+ GC_descr descriptor, GC_descr *simple_d,
+ complex_descriptor **complex_d,
+ struct LeafDescriptor * leaf)
{
# define OPT_THRESHOLD 50
- /* For larger arrays, we try to combine descriptors of adjacent */
- /* descriptors to speed up marking, and to reduce the amount */
- /* of space needed on the mark stack. */
+ /* For larger arrays, we try to combine descriptors of adjacent */
+ /* descriptors to speed up marking, and to reduce the amount */
+ /* of space needed on the mark stack. */
if ((descriptor & GC_DS_TAGS) == GC_DS_LENGTH) {
if (descriptor == (GC_descr)size) {
- *simple_d = nelements * descriptor;
- return(SIMPLE);
+ *simple_d = nelements * descriptor;
+ return(SIMPLE);
} else if ((word)descriptor == 0) {
*simple_d = (GC_descr)0;
return(SIMPLE);
}
}
} else if (size <= BITMAP_BITS/2
- && (descriptor & GC_DS_TAGS) != GC_DS_PROC
- && (size & (sizeof(word)-1)) == 0) {
- int result =
+ && (descriptor & GC_DS_TAGS) != GC_DS_PROC
+ && (size & (sizeof(word)-1)) == 0) {
+ int result =
GC_make_array_descriptor(nelements/2, 2*size,
- GC_double_descr(descriptor,
- BYTES_TO_WORDS(size)),
- simple_d, complex_d, leaf);
+ GC_double_descr(descriptor,
+ BYTES_TO_WORDS(size)),
+ simple_d, complex_d, leaf);
if ((nelements & 1) == 0) {
return(result);
} else {
struct LeafDescriptor * one_element =
(struct LeafDescriptor *)
- GC_malloc_atomic(sizeof(struct LeafDescriptor));
-
+ GC_malloc_atomic(sizeof(struct LeafDescriptor));
+
if (result == NO_MEM || one_element == 0) return(NO_MEM);
one_element -> ld_tag = LEAF_TAG;
one_element -> ld_size = size;
{
struct LeafDescriptor * beginning =
(struct LeafDescriptor *)
- GC_malloc_atomic(sizeof(struct LeafDescriptor));
+ GC_malloc_atomic(sizeof(struct LeafDescriptor));
if (beginning == 0) return(NO_MEM);
beginning -> ld_tag = LEAF_TAG;
beginning -> ld_size = size;
beginning -> ld_nelements = 1;
beginning -> ld_descriptor = *simple_d;
*complex_d = GC_make_sequence_descriptor(
- (complex_descriptor *)beginning,
- (complex_descriptor *)one_element);
+ (complex_descriptor *)beginning,
+ (complex_descriptor *)one_element);
break;
}
case LEAF:
{
struct LeafDescriptor * beginning =
(struct LeafDescriptor *)
- GC_malloc_atomic(sizeof(struct LeafDescriptor));
+ GC_malloc_atomic(sizeof(struct LeafDescriptor));
if (beginning == 0) return(NO_MEM);
beginning -> ld_tag = LEAF_TAG;
beginning -> ld_size = leaf -> ld_size;
beginning -> ld_nelements = leaf -> ld_nelements;
beginning -> ld_descriptor = leaf -> ld_descriptor;
*complex_d = GC_make_sequence_descriptor(
- (complex_descriptor *)beginning,
- (complex_descriptor *)one_element);
+ (complex_descriptor *)beginning,
+ (complex_descriptor *)one_element);
break;
}
case COMPLEX:
*complex_d = GC_make_sequence_descriptor(
- *complex_d,
- (complex_descriptor *)one_element);
+ *complex_d,
+ (complex_descriptor *)one_element);
break;
}
return(COMPLEX);
}
}
- {
- leaf -> ld_size = size;
- leaf -> ld_nelements = nelements;
- leaf -> ld_descriptor = descriptor;
- return(LEAF);
- }
+
+ leaf -> ld_size = size;
+ leaf -> ld_nelements = nelements;
+ leaf -> ld_descriptor = descriptor;
+ return(LEAF);
}
STATIC complex_descriptor *
GC_make_sequence_descriptor(complex_descriptor *first,
- complex_descriptor *second)
+ complex_descriptor *second)
{
struct SequenceDescriptor * result =
(struct SequenceDescriptor *)
- GC_malloc(sizeof(struct SequenceDescriptor));
- /* Can't result in overly conservative marking, since tags are */
- /* very small integers. Probably faster than maintaining type */
- /* info. */
+ GC_malloc(sizeof(struct SequenceDescriptor));
+ /* Can't result in overly conservative marking, since tags are */
+ /* very small integers. Probably faster than maintaining type */
+ /* info. */
if (result != 0) {
- result -> sd_tag = SEQUENCE_TAG;
+ result -> sd_tag = SEQUENCE_TAG;
result -> sd_first = first;
result -> sd_second = second;
}
}
#ifdef UNDEFINED
-complex_descriptor * GC_make_complex_array_descriptor(word nelements,
- complex_descriptor *descr)
-{
+ complex_descriptor * GC_make_complex_array_descriptor(word nelements,
+ complex_descriptor *descr)
+ {
struct ComplexArrayDescriptor * result =
(struct ComplexArrayDescriptor *)
- GC_malloc(sizeof(struct ComplexArrayDescriptor));
-
+ GC_malloc(sizeof(struct ComplexArrayDescriptor));
+
if (result != 0) {
- result -> ad_tag = ARRAY_TAG;
+ result -> ad_tag = ARRAY_TAG;
result -> ad_nelements = nelements;
result -> ad_element_descr = descr;
}
return((complex_descriptor *)result);
-}
+ }
#endif
-STATIC ptr_t * GC_eobjfreelist;
+STATIC ptr_t * GC_eobjfreelist = NULL;
-STATIC ptr_t * GC_arobjfreelist;
+STATIC ptr_t * GC_arobjfreelist = NULL;
STATIC mse * GC_typed_mark_proc(word * addr, mse * mark_stack_ptr,
- mse * mark_stack_limit, word env);
+ mse * mark_stack_limit, word env);
STATIC mse * GC_array_mark_proc(word * addr, mse * mark_stack_ptr,
- mse * mark_stack_limit, word env);
+ mse * mark_stack_limit, word env);
/* Caller does not hold allocation lock. */
STATIC void GC_init_explicit_typing(void)
/* Set up object kind with simple indirect descriptor. */
GC_eobjfreelist = (ptr_t *)GC_new_free_list_inner();
GC_explicit_kind = GC_new_kind_inner(
- (void **)GC_eobjfreelist,
- (((word)WORDS_TO_BYTES(-1)) | GC_DS_PER_OBJECT),
- TRUE, TRUE);
- /* Descriptors are in the last word of the object. */
+ (void **)GC_eobjfreelist,
+ (((word)WORDS_TO_BYTES(-1)) | GC_DS_PER_OBJECT),
+ TRUE, TRUE);
+ /* Descriptors are in the last word of the object. */
GC_typed_mark_proc_index = GC_new_proc_inner(GC_typed_mark_proc);
/* Set up object kind with array descriptor. */
GC_arobjfreelist = (ptr_t *)GC_new_free_list_inner();
GC_array_mark_proc_index = GC_new_proc_inner(GC_array_mark_proc);
GC_array_kind = GC_new_kind_inner(
- (void **)GC_arobjfreelist,
- GC_MAKE_PROC(GC_array_mark_proc_index, 0),
- FALSE, TRUE);
+ (void **)GC_arobjfreelist,
+ GC_MAKE_PROC(GC_array_mark_proc_index, 0),
+ FALSE, TRUE);
for (i = 0; i < WORDSZ/2; i++) {
GC_descr d = (((word)(-1)) >> (WORDSZ - i)) << (WORDSZ - i);
d |= GC_DS_BITMAP;
}
STATIC mse * GC_typed_mark_proc(word * addr, mse * mark_stack_ptr,
- mse * mark_stack_limit, word env)
+ mse * mark_stack_limit, word env)
{
word bm = GC_ext_descriptors[env].ed_bitmap;
word * current_p = addr;
INIT_HDR_CACHE;
for (; bm != 0; bm >>= 1, current_p++) {
- if (bm & 1) {
- current = *current_p;
- FIXUP_POINTER(current);
- if ((ptr_t)current >= least_ha && (ptr_t)current <= greatest_ha) {
- PUSH_CONTENTS((ptr_t)current, mark_stack_ptr,
- mark_stack_limit, (ptr_t)current_p, exit1);
- }
- }
+ if (bm & 1) {
+ current = *current_p;
+ FIXUP_POINTER(current);
+ if ((ptr_t)current >= least_ha && (ptr_t)current <= greatest_ha) {
+ PUSH_CONTENTS((ptr_t)current, mark_stack_ptr,
+ mark_stack_limit, (ptr_t)current_p, exit1);
+ }
+ }
}
if (GC_ext_descriptors[env].ed_continued) {
- /* Push an entry with the rest of the descriptor back onto the */
- /* stack. Thus we never do too much work at once. Note that */
- /* we also can't overflow the mark stack unless we actually */
- /* mark something. */
+ /* Push an entry with the rest of the descriptor back onto the */
+ /* stack. Thus we never do too much work at once. Note that */
+ /* we also can't overflow the mark stack unless we actually */
+ /* mark something. */
mark_stack_ptr++;
if (mark_stack_ptr >= mark_stack_limit) {
mark_stack_ptr = GC_signal_mark_stack_overflow(mark_stack_ptr);
}
mark_stack_ptr -> mse_start = (ptr_t)(addr + WORDSZ);
mark_stack_ptr -> mse_descr =
- GC_MAKE_PROC(GC_typed_mark_proc_index, env+1);
+ GC_MAKE_PROC(GC_typed_mark_proc_index, env+1);
}
return(mark_stack_ptr);
}
-/* Return the size of the object described by d. It would be faster to */
-/* store this directly, or to compute it as part of */
-/* GC_push_complex_descriptor, but hopefully it doesn't matter. */
+/* Return the size of the object described by d. It would be faster to */
+/* store this directly, or to compute it as part of */
+/* GC_push_complex_descriptor, but hopefully it doesn't matter. */
STATIC word GC_descr_obj_size(complex_descriptor *d)
{
switch(d -> TAG) {
case LEAF_TAG:
- return(d -> ld.ld_nelements * d -> ld.ld_size);
+ return(d -> ld.ld_nelements * d -> ld.ld_size);
case ARRAY_TAG:
return(d -> ad.ad_nelements
* GC_descr_obj_size(d -> ad.ad_element_descr));
}
}
-/* Push descriptors for the object at addr with complex descriptor d */
-/* onto the mark stack. Return 0 if the mark stack overflowed. */
+/* Push descriptors for the object at addr with complex descriptor d */
+/* onto the mark stack. Return 0 if the mark stack overflowed. */
STATIC mse * GC_push_complex_descriptor(word *addr, complex_descriptor *d,
- mse *msp, mse *msl)
+ mse *msp, mse *msl)
{
register ptr_t current = (ptr_t) addr;
register word nelements;
register word sz;
register word i;
-
+
switch(d -> TAG) {
case LEAF_TAG:
{
register GC_descr descr = d -> ld.ld_descriptor;
-
+
nelements = d -> ld.ld_nelements;
if (msl - msp <= (ptrdiff_t)nelements) return(0);
sz = d -> ld.ld_size;
case ARRAY_TAG:
{
register complex_descriptor *descr = d -> ad.ad_element_descr;
-
+
nelements = d -> ad.ad_nelements;
sz = GC_descr_obj_size(descr);
for (i = 0; i < nelements; i++) {
msp = GC_push_complex_descriptor((word *)current, descr,
- msp, msl);
+ msp, msl);
if (msp == 0) return(0);
current += sz;
}
{
sz = GC_descr_obj_size(d -> sd.sd_first);
msp = GC_push_complex_descriptor((word *)current, d -> sd.sd_first,
- msp, msl);
+ msp, msl);
if (msp == 0) return(0);
current += sz;
msp = GC_push_complex_descriptor((word *)current, d -> sd.sd_second,
- msp, msl);
+ msp, msl);
return(msp);
}
default:
/*ARGSUSED*/
STATIC mse * GC_array_mark_proc(word * addr, mse * mark_stack_ptr,
- mse * mark_stack_limit, word env)
+ mse * mark_stack_limit, word env)
{
hdr * hhdr = HDR(addr);
size_t sz = hhdr -> hb_sz;
complex_descriptor * descr = (complex_descriptor *)(addr[nwords-1]);
mse * orig_mark_stack_ptr = mark_stack_ptr;
mse * new_mark_stack_ptr;
-
+
if (descr == 0) {
- /* Found a reference to a free list entry. Ignore it. */
- return(orig_mark_stack_ptr);
+ /* Found a reference to a free list entry. Ignore it. */
+ return(orig_mark_stack_ptr);
}
- /* In use counts were already updated when array descriptor was */
- /* pushed. Here we only replace it by subobject descriptors, so */
- /* no update is necessary. */
+ /* In use counts were already updated when array descriptor was */
+ /* pushed. Here we only replace it by subobject descriptors, so */
+ /* no update is necessary. */
new_mark_stack_ptr = GC_push_complex_descriptor(addr, descr,
- mark_stack_ptr,
- mark_stack_limit-1);
+ mark_stack_ptr,
+ mark_stack_limit-1);
if (new_mark_stack_ptr == 0) {
- /* Doesn't fit. Conservatively push the whole array as a unit */
- /* and request a mark stack expansion. */
- /* This cannot cause a mark stack overflow, since it replaces */
- /* the original array entry. */
- GC_mark_stack_too_small = TRUE;
- new_mark_stack_ptr = orig_mark_stack_ptr + 1;
- new_mark_stack_ptr -> mse_start = (ptr_t)addr;
- new_mark_stack_ptr -> mse_descr = sz | GC_DS_LENGTH;
+ /* Doesn't fit. Conservatively push the whole array as a unit */
+ /* and request a mark stack expansion. */
+ /* This cannot cause a mark stack overflow, since it replaces */
+ /* the original array entry. */
+ GC_mark_stack_too_small = TRUE;
+ new_mark_stack_ptr = orig_mark_stack_ptr + 1;
+ new_mark_stack_ptr -> mse_start = (ptr_t)addr;
+ new_mark_stack_ptr -> mse_descr = sz | GC_DS_LENGTH;
} else {
/* Push descriptor itself */
new_mark_stack_ptr++;
GC_descr result;
signed_word i;
# define HIGH_BIT (((word)1) << (WORDSZ - 1))
-
+
if (!GC_explicit_typing_initialized) GC_init_explicit_typing();
while (last_set_bit >= 0 && !GC_get_bit(bm, last_set_bit)) last_set_bit --;
if (last_set_bit < 0) return(0 /* no pointers */);
{
register GC_bool all_bits_set = TRUE;
for (i = 0; i < last_set_bit; i++) {
- if (!GC_get_bit(bm, i)) {
- all_bits_set = FALSE;
- break;
- }
+ if (!GC_get_bit(bm, i)) {
+ all_bits_set = FALSE;
+ break;
+ }
}
if (all_bits_set) {
- /* An initial section contains all pointers. Use length descriptor. */
+ /* An initial section contains all pointers. Use length descriptor. */
return (WORDS_TO_BYTES(last_set_bit+1) | GC_DS_LENGTH);
}
}
# endif
if (last_set_bit < BITMAP_BITS) {
- /* Hopefully the common case. */
- /* Build bitmap descriptor (with bits reversed) */
- result = HIGH_BIT;
- for (i = last_set_bit - 1; i >= 0; i--) {
- result >>= 1;
- if (GC_get_bit(bm, i)) result |= HIGH_BIT;
- }
- result |= GC_DS_BITMAP;
- return(result);
+ /* Hopefully the common case. */
+ /* Build bitmap descriptor (with bits reversed) */
+ result = HIGH_BIT;
+ for (i = last_set_bit - 1; i >= 0; i--) {
+ result >>= 1;
+ if (GC_get_bit(bm, i)) result |= HIGH_BIT;
+ }
+ result |= GC_DS_BITMAP;
+ return(result);
} else {
- signed_word index;
-
- index = GC_add_ext_descriptor(bm, (word)last_set_bit+1);
- if (index == -1) return(WORDS_TO_BYTES(last_set_bit+1) | GC_DS_LENGTH);
- /* Out of memory: use conservative */
- /* approximation. */
- result = GC_MAKE_PROC(GC_typed_mark_proc_index, (word)index);
- return result;
+ signed_word index;
+
+ index = GC_add_ext_descriptor(bm, (word)last_set_bit+1);
+ if (index == -1) return(WORDS_TO_BYTES(last_set_bit+1) | GC_DS_LENGTH);
+ /* Out of memory: use conservative */
+ /* approximation. */
+ result = GC_MAKE_PROC(GC_typed_mark_proc_index, (word)index);
+ return result;
}
}
-void * GC_clear_stack(void *);
-
-#define GENERAL_MALLOC(lb,k) \
- (void *)GC_clear_stack(GC_generic_malloc((word)lb, k))
-
-#define GENERAL_MALLOC_IOP(lb,k) \
- (void *)GC_clear_stack(GC_generic_malloc_ignore_off_page(lb, k))
-
GC_API void * GC_CALL GC_malloc_explicitly_typed(size_t lb, GC_descr d)
{
ptr_t op;
lb += TYPD_EXTRA_BYTES;
if(SMALL_OBJ(lb)) {
- lg = GC_size_map[lb];
- opp = &(GC_eobjfreelist[lg]);
- LOCK();
+ lg = GC_size_map[lb];
+ opp = &(GC_eobjfreelist[lg]);
+ LOCK();
if( (op = *opp) == 0 ) {
UNLOCK();
op = (ptr_t)GENERAL_MALLOC((word)lb, GC_explicit_kind);
- if (0 == op) return 0;
- lg = GC_size_map[lb]; /* May have been uninitialized. */
+ if (0 == op) return 0;
+ lg = GC_size_map[lb]; /* May have been uninitialized. */
} else {
*opp = obj_link(op);
- obj_link(op) = 0;
+ obj_link(op) = 0;
GC_bytes_allocd += GRANULES_TO_BYTES(lg);
UNLOCK();
}
- ((word *)op)[GRANULES_TO_WORDS(lg) - 1] = d;
+ ((word *)op)[GRANULES_TO_WORDS(lg) - 1] = d;
} else {
op = (ptr_t)GENERAL_MALLOC((word)lb, GC_explicit_kind);
if (op != NULL) {
- lg = BYTES_TO_GRANULES(GC_size(op));
- ((word *)op)[GRANULES_TO_WORDS(lg) - 1] = d;
+ lg = BYTES_TO_GRANULES(GC_size(op));
+ ((word *)op)[GRANULES_TO_WORDS(lg) - 1] = d;
}
}
return((void *) op);
}
GC_API void * GC_CALL GC_malloc_explicitly_typed_ignore_off_page(size_t lb,
- GC_descr d)
+ GC_descr d)
{
-ptr_t op;
-ptr_t * opp;
-size_t lg;
-DCL_LOCK_STATE;
+ ptr_t op;
+ ptr_t * opp;
+ size_t lg;
+ DCL_LOCK_STATE;
lb += TYPD_EXTRA_BYTES;
if( SMALL_OBJ(lb) ) {
- lg = GC_size_map[lb];
- opp = &(GC_eobjfreelist[lg]);
- LOCK();
+ lg = GC_size_map[lb];
+ opp = &(GC_eobjfreelist[lg]);
+ LOCK();
if( (op = *opp) == 0 ) {
UNLOCK();
op = (ptr_t)GENERAL_MALLOC_IOP(lb, GC_explicit_kind);
- if (0 == op) return 0;
- lg = GC_size_map[lb]; /* May have been uninitialized. */
+ if (0 == op) return 0;
+ lg = GC_size_map[lb]; /* May have been uninitialized. */
} else {
*opp = obj_link(op);
- obj_link(op) = 0;
+ obj_link(op) = 0;
GC_bytes_allocd += GRANULES_TO_BYTES(lg);
UNLOCK();
}
- ((word *)op)[GRANULES_TO_WORDS(lg) - 1] = d;
+ ((word *)op)[GRANULES_TO_WORDS(lg) - 1] = d;
} else {
op = (ptr_t)GENERAL_MALLOC_IOP(lb, GC_explicit_kind);
if (op != NULL) {
lg = BYTES_TO_WORDS(GC_size(op));
- ((word *)op)[GRANULES_TO_WORDS(lg) - 1] = d;
+ ((word *)op)[GRANULES_TO_WORDS(lg) - 1] = d;
}
}
return((void *) op);
}
GC_API void * GC_CALL GC_calloc_explicitly_typed(size_t n, size_t lb,
- GC_descr d)
+ GC_descr d)
{
-ptr_t op;
-ptr_t * opp;
-size_t lg;
-GC_descr simple_descr;
-complex_descriptor *complex_descr;
-register int descr_type;
-struct LeafDescriptor leaf;
-DCL_LOCK_STATE;
+ ptr_t op;
+ ptr_t * opp;
+ size_t lg;
+ GC_descr simple_descr;
+ complex_descriptor *complex_descr;
+ register int descr_type;
+ struct LeafDescriptor leaf;
+ DCL_LOCK_STATE;
descr_type = GC_make_array_descriptor((word)n, (word)lb, d,
- &simple_descr, &complex_descr, &leaf);
+ &simple_descr, &complex_descr, &leaf);
switch(descr_type) {
- case NO_MEM: return(0);
- case SIMPLE: return(GC_malloc_explicitly_typed(n*lb, simple_descr));
- case LEAF:
- lb *= n;
- lb += sizeof(struct LeafDescriptor) + TYPD_EXTRA_BYTES;
- break;
- case COMPLEX:
- lb *= n;
- lb += TYPD_EXTRA_BYTES;
- break;
+ case NO_MEM: return(0);
+ case SIMPLE: return(GC_malloc_explicitly_typed(n*lb, simple_descr));
+ case LEAF:
+ lb *= n;
+ lb += sizeof(struct LeafDescriptor) + TYPD_EXTRA_BYTES;
+ break;
+ case COMPLEX:
+ lb *= n;
+ lb += TYPD_EXTRA_BYTES;
+ break;
}
if( SMALL_OBJ(lb) ) {
- lg = GC_size_map[lb];
- opp = &(GC_arobjfreelist[lg]);
- LOCK();
+ lg = GC_size_map[lb];
+ opp = &(GC_arobjfreelist[lg]);
+ LOCK();
if( (op = *opp) == 0 ) {
UNLOCK();
op = (ptr_t)GENERAL_MALLOC((word)lb, GC_array_kind);
- if (0 == op) return(0);
- lg = GC_size_map[lb]; /* May have been uninitialized. */
+ if (0 == op) return(0);
+ lg = GC_size_map[lb]; /* May have been uninitialized. */
} else {
*opp = obj_link(op);
- obj_link(op) = 0;
+ obj_link(op) = 0;
GC_bytes_allocd += GRANULES_TO_BYTES(lg);
UNLOCK();
}
(struct LeafDescriptor *)
((word *)op
+ GRANULES_TO_WORDS(lg)
- - (BYTES_TO_WORDS(sizeof(struct LeafDescriptor)) + 1));
-
+ - (BYTES_TO_WORDS(sizeof(struct LeafDescriptor)) + 1));
+
lp -> ld_tag = LEAF_TAG;
lp -> ld_size = leaf.ld_size;
lp -> ld_nelements = leaf.ld_nelements;
((volatile word *)op)[GRANULES_TO_WORDS(lg) - 1] = (word)lp;
} else {
size_t lw = GRANULES_TO_WORDS(lg);
-
+
((word *)op)[lw - 1] = (word)complex_descr;
- /* Make sure the descriptor is cleared once there is any danger */
- /* it may have been collected. */
+ /* Make sure the descriptor is cleared once there is any danger */
+ /* it may have been collected. */
if (GC_general_register_disappearing_link((void * *)((word *)op+lw-1),
- op) == 2) {
- /* Couldn't register it due to lack of memory. Punt. */
- /* This will probably fail too, but gives the recovery code */
- /* a chance. */
- return(GC_malloc(n*lb));
- }
+ op) == GC_NO_MEMORY) {
+ /* Couldn't register it due to lack of memory. Punt. */
+ /* This will probably fail too, but gives the recovery code */
+ /* a chance. */
+ return(GC_malloc(n*lb));
+ }
}
return((void *) op);
}
projects / cacao.git / blobdiff