-/*
+/*
* Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers
* Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved.
*
* provided the above notices are retained, and a notice that the code was
* modified is included with the above copyright notice.
*/
-# include <stdio.h>
-# include "private/gc_priv.h"
-/* Data structure for list of root sets. */
-/* We keep a hash table, so that we can filter out duplicate additions. */
-/* Under Win32, we need to do a better job of filtering overlaps, so */
-/* we resort to sequential search, and pay the price. */
+#include "private/gc_priv.h"
+
+#include <stdio.h>
+
+/* Data structure for list of root sets. */
+/* We keep a hash table, so that we can filter out duplicate additions. */
+/* Under Win32, we need to do a better job of filtering overlaps, so */
+/* we resort to sequential search, and pay the price. */
/* This is really declared in gc_priv.h:
struct roots {
- ptr_t r_start;
- ptr_t r_end;
- # if !defined(MSWIN32) && !defined(MSWINCE)
- struct roots * r_next;
- # endif
- GC_bool r_tmp;
- -- Delete before registering new dynamic libraries
+ ptr_t r_start;
+ ptr_t r_end;
+# if !defined(MSWIN32) && !defined(MSWINCE)
+ struct roots * r_next;
+# endif
+ GC_bool r_tmp;
+ -- Delete before registering new dynamic libraries
};
struct roots GC_static_roots[MAX_ROOT_SETS];
*/
-int GC_no_dls = 0; /* Register dynamic library data segments. */
+int GC_no_dls = 0; /* Register dynamic library data segments. */
static int n_root_sets = 0;
+ /* GC_static_roots[0..n_root_sets) contains the valid root sets. */
- /* GC_static_roots[0..n_root_sets) contains the valid root sets. */
-
-# if !defined(NO_DEBUGGING)
-/* For debugging: */
-void GC_print_static_roots(void)
-{
- register int i;
+#if !defined(NO_DEBUGGING)
+ /* For debugging: */
+ void GC_print_static_roots(void)
+ {
+ int i;
size_t total = 0;
-
+
for (i = 0; i < n_root_sets; i++) {
GC_printf("From %p to %p%s\n",
- GC_static_roots[i].r_start,
- GC_static_roots[i].r_end,
- GC_static_roots[i].r_tmp ? " (temporary)" : "");
+ GC_static_roots[i].r_start,
+ GC_static_roots[i].r_end,
+ GC_static_roots[i].r_tmp ? " (temporary)" : "");
total += GC_static_roots[i].r_end - GC_static_roots[i].r_start;
}
GC_printf("Total size: %ld\n", (unsigned long) total);
if (GC_root_size != total) {
- GC_printf("GC_root_size incorrect: %ld!!\n",
- (unsigned long) GC_root_size);
+ GC_err_printf("GC_root_size incorrect: %ld!!\n",
+ (long) GC_root_size);
}
-}
-# endif /* NO_DEBUGGING */
-
-/* Primarily for debugging support: */
-/* Is the address p in one of the registered static */
-/* root sections? */
-GC_bool GC_is_static_root(ptr_t p)
-{
+ }
+#endif /* !NO_DEBUGGING */
+
+#ifndef THREADS
+ /* Primarily for debugging support: */
+ /* Is the address p in one of the registered static root sections? */
+ GC_INNER GC_bool GC_is_static_root(ptr_t p)
+ {
static int last_root_set = MAX_ROOT_SETS;
- register int i;
-
-
+ int i;
+
if (last_root_set < n_root_sets
- && p >= GC_static_roots[last_root_set].r_start
+ && p >= GC_static_roots[last_root_set].r_start
&& p < GC_static_roots[last_root_set].r_end) return(TRUE);
for (i = 0; i < n_root_sets; i++) {
- if (p >= GC_static_roots[i].r_start
+ if (p >= GC_static_roots[i].r_start
&& p < GC_static_roots[i].r_end) {
last_root_set = i;
return(TRUE);
}
}
return(FALSE);
-}
+ }
+#endif /* !THREADS */
#if !defined(MSWIN32) && !defined(MSWINCE)
-/*
+/*
# define LOG_RT_SIZE 6
# define RT_SIZE (1 << LOG_RT_SIZE) -- Power of 2, may be != MAX_ROOT_SETS
struct roots * GC_root_index[RT_SIZE];
- -- Hash table header. Used only to check whether a range is
- -- already present.
- -- really defined in gc_priv.h
+ -- Hash table header. Used only to check whether a range is
+ -- already present.
+ -- really defined in gc_priv.h
*/
-static INLINE int rt_hash(ptr_t addr)
-{
+ GC_INLINE int rt_hash(ptr_t addr)
+ {
word result = (word) addr;
# if CPP_WORDSZ > 8*LOG_RT_SIZE
- result ^= result >> 8*LOG_RT_SIZE;
+ result ^= result >> 8*LOG_RT_SIZE;
# endif
# if CPP_WORDSZ > 4*LOG_RT_SIZE
- result ^= result >> 4*LOG_RT_SIZE;
+ result ^= result >> 4*LOG_RT_SIZE;
# endif
result ^= result >> 2*LOG_RT_SIZE;
result ^= result >> LOG_RT_SIZE;
result &= (RT_SIZE-1);
return(result);
-}
+ }
-/* Is a range starting at b already in the table? If so return a */
-/* pointer to it, else NIL. */
-struct roots * GC_roots_present(ptr_t b)
-{
+ /* Is a range starting at b already in the table? If so return a */
+ /* pointer to it, else NIL. */
+ GC_INNER struct roots * GC_roots_present(ptr_t b)
+ {
int h = rt_hash(b);
struct roots *p = GC_root_index[h];
-
+
while (p != 0) {
if (p -> r_start == (ptr_t)b) return(p);
p = p -> r_next;
}
return(FALSE);
-}
+ }
-/* Add the given root structure to the index. */
-static void add_roots_to_index(struct roots *p)
-{
+ /* Add the given root structure to the index. */
+ GC_INLINE void add_roots_to_index(struct roots *p)
+ {
int h = rt_hash(p -> r_start);
-
+
p -> r_next = GC_root_index[h];
GC_root_index[h] = p;
-}
-
-# endif
-
-
-
+ }
+#endif /* !MSWIN32 */
-word GC_root_size = 0;
+GC_INNER word GC_root_size = 0;
GC_API void GC_CALL GC_add_roots(void *b, void *e)
{
DCL_LOCK_STATE;
-
+
if (!GC_is_initialized) GC_init();
LOCK();
GC_add_roots_inner((ptr_t)b, (ptr_t)e, FALSE);
}
-/* Add [b,e) to the root set. Adding the same interval a second time */
-/* is a moderately fast no-op, and hence benign. We do not handle */
-/* different but overlapping intervals efficiently. (We do handle */
-/* them correctly.) */
-/* Tmp specifies that the interval may be deleted before */
-/* re-registering dynamic libraries. */
+/* Add [b,e) to the root set. Adding the same interval a second time */
+/* is a moderately fast no-op, and hence benign. We do not handle */
+/* different but overlapping intervals efficiently. (We do handle */
+/* them correctly.) */
+/* Tmp specifies that the interval may be deleted before */
+/* re-registering dynamic libraries. */
void GC_add_roots_inner(ptr_t b, ptr_t e, GC_bool tmp)
{
struct roots * old;
-
+
+ /* Adjust and check range boundaries for safety */
+ GC_ASSERT((word)b % sizeof(word) == 0);
+ e = (ptr_t)((word)e & ~(sizeof(word) - 1));
+ GC_ASSERT(b <= e);
+ if (b == e) return; /* nothing to do? */
+
# if defined(MSWIN32) || defined(MSWINCE)
- /* Spend the time to ensure that there are no overlapping */
- /* or adjacent intervals. */
- /* This could be done faster with e.g. a */
- /* balanced tree. But the execution time here is */
- /* virtually guaranteed to be dominated by the time it */
- /* takes to scan the roots. */
+ /* Spend the time to ensure that there are no overlapping */
+ /* or adjacent intervals. */
+ /* This could be done faster with e.g. a */
+ /* balanced tree. But the execution time here is */
+ /* virtually guaranteed to be dominated by the time it */
+ /* takes to scan the roots. */
{
register int i;
old = 0; /* initialized to prevent warning. */
if (i < n_root_sets) {
/* merge other overlapping intervals */
struct roots *other;
-
+
for (i++; i < n_root_sets; i++) {
other = GC_static_roots + i;
b = other -> r_start;
static GC_bool roots_were_cleared = FALSE;
-GC_API void GC_CALL GC_clear_roots (void)
+GC_API void GC_CALL GC_clear_roots(void)
{
DCL_LOCK_STATE;
-
+
if (!GC_is_initialized) GC_init();
LOCK();
roots_were_cleared = TRUE;
n_root_sets = 0;
GC_root_size = 0;
# if !defined(MSWIN32) && !defined(MSWINCE)
- {
- register int i;
-
- for (i = 0; i < RT_SIZE; i++) GC_root_index[i] = 0;
- }
+ {
+ int i;
+ for (i = 0; i < RT_SIZE; i++) GC_root_index[i] = 0;
+ }
# endif
UNLOCK();
}
-/* Internal use only; lock held. */
-static void GC_remove_root_at_pos(int i)
+/* Internal use only; lock held. */
+STATIC void GC_remove_root_at_pos(int i)
{
GC_root_size -= (GC_static_roots[i].r_end - GC_static_roots[i].r_start);
GC_static_roots[i].r_start = GC_static_roots[n_root_sets-1].r_start;
}
#if !defined(MSWIN32) && !defined(MSWINCE)
-static void GC_rebuild_root_index(void)
-{
+ STATIC void GC_rebuild_root_index(void)
+ {
int i;
-
+
for (i = 0; i < RT_SIZE; i++) GC_root_index[i] = 0;
for (i = 0; i < n_root_sets; i++)
- add_roots_to_index(GC_static_roots + i);
-}
+ add_roots_to_index(GC_static_roots + i);
+ }
#endif
#if defined(DYNAMIC_LOADING) || defined(MSWIN32) || defined(MSWINCE) \
|| defined(PCR)
-/* Internal use only; lock held. */
+/* Internal use only; lock held. */
STATIC void GC_remove_tmp_roots(void)
{
int i;
-
+
for (i = 0; i < n_root_sets; ) {
- if (GC_static_roots[i].r_tmp) {
+ if (GC_static_roots[i].r_tmp) {
GC_remove_root_at_pos(i);
- } else {
- i++;
- }
+ } else {
+ i++;
+ }
}
# if !defined(MSWIN32) && !defined(MSWINCE)
GC_rebuild_root_index();
#endif
#if !defined(MSWIN32) && !defined(MSWINCE)
-GC_API void GC_CALL GC_remove_roots(void *b, void *e)
-{
+ STATIC void GC_remove_roots_inner(ptr_t b, ptr_t e);
+
+ GC_API void GC_CALL GC_remove_roots(void *b, void *e)
+ {
DCL_LOCK_STATE;
-
+
+ /* Quick check whether has nothing to do */
+ if ((((word)b + (sizeof(word) - 1)) & ~(sizeof(word) - 1)) >=
+ ((word)e & ~(sizeof(word) - 1)))
+ return;
+
LOCK();
GC_remove_roots_inner((ptr_t)b, (ptr_t)e);
UNLOCK();
-}
+ }
-/* Should only be called when the lock is held */
-void GC_remove_roots_inner(ptr_t b, ptr_t e)
-{
+ /* Should only be called when the lock is held */
+ STATIC void GC_remove_roots_inner(ptr_t b, ptr_t e)
+ {
int i;
for (i = 0; i < n_root_sets; ) {
- if (GC_static_roots[i].r_start >= b
- && GC_static_roots[i].r_end <= e) {
+ if (GC_static_roots[i].r_start >= b
+ && GC_static_roots[i].r_end <= e) {
GC_remove_root_at_pos(i);
- } else {
- i++;
- }
+ } else {
+ i++;
+ }
}
GC_rebuild_root_index();
-}
+ }
#endif /* !defined(MSWIN32) && !defined(MSWINCE) */
-#if defined(MSWIN32) || defined(_WIN32_WCE_EMULATION)
-/* Workaround for the OS mapping and unmapping behind our back: */
-/* Is the address p in one of the temporary static root sections? */
-GC_bool GC_is_tmp_root(ptr_t p)
-{
+#if (defined(MSWIN32) || defined(MSWINCE)) && !defined(NO_DEBUGGING)
+ /* Not used at present (except for, may be, debugging purpose). */
+ /* Workaround for the OS mapping and unmapping behind our back: */
+ /* Is the address p in one of the temporary static root sections? */
+ GC_bool GC_is_tmp_root(ptr_t p)
+ {
static int last_root_set = MAX_ROOT_SETS;
register int i;
-
+
if (last_root_set < n_root_sets
- && p >= GC_static_roots[last_root_set].r_start
+ && p >= GC_static_roots[last_root_set].r_start
&& p < GC_static_roots[last_root_set].r_end)
- return GC_static_roots[last_root_set].r_tmp;
+ return GC_static_roots[last_root_set].r_tmp;
for (i = 0; i < n_root_sets; i++) {
- if (p >= GC_static_roots[i].r_start
+ if (p >= GC_static_roots[i].r_start
&& p < GC_static_roots[i].r_end) {
last_root_set = i;
return GC_static_roots[i].r_tmp;
}
}
return(FALSE);
-}
-#endif /* MSWIN32 || _WIN32_WCE_EMULATION */
+ }
+#endif /* MSWIN32 || MSWINCE */
-ptr_t GC_approx_sp(void)
+GC_INNER ptr_t GC_approx_sp(void)
{
volatile word sp;
sp = (word)&sp;
- /* Also force stack to grow if necessary. Otherwise the */
- /* later accesses might cause the kernel to think we're */
- /* doing something wrong. */
-
+ /* Also force stack to grow if necessary. Otherwise the */
+ /* later accesses might cause the kernel to think we're */
+ /* doing something wrong. */
return((ptr_t)sp);
}
};
struct exclusion GC_excl_table[MAX_EXCLUSIONS];
- -- Array of exclusions, ascending
- -- address order.
+ -- Array of exclusions, ascending
+ -- address order.
*/
-STATIC size_t GC_excl_table_entries = 0;/* Number of entries in use. */
+STATIC size_t GC_excl_table_entries = 0;/* Number of entries in use. */
/* Return the first exclusion range that includes an address >= start_addr */
-/* Assumes the exclusion table contains at least one entry (namely the */
-/* GC data structures). */
+/* Assumes the exclusion table contains at least one entry (namely the */
+/* GC data structures). */
STATIC struct exclusion * GC_next_exclusion(ptr_t start_addr)
{
size_t low = 0;
size_t mid;
while (high > low) {
- mid = (low + high) >> 1;
- /* low <= mid < high */
- if ((word) GC_excl_table[mid].e_end <= (word) start_addr) {
- low = mid + 1;
- } else {
- high = mid;
- }
+ mid = (low + high) >> 1;
+ /* low <= mid < high */
+ if ((word) GC_excl_table[mid].e_end <= (word) start_addr) {
+ low = mid + 1;
+ } else {
+ high = mid;
+ }
}
if ((word) GC_excl_table[low].e_end <= (word) start_addr) return 0;
return GC_excl_table + low;
}
-GC_API void GC_CALL GC_exclude_static_roots(void *start, void *finish)
+/* Should only be called when the lock is held. The range boundaries */
+/* should be properly aligned and valid. */
+GC_INNER void GC_exclude_static_roots_inner(void *start, void *finish)
{
struct exclusion * next;
size_t next_index, i;
+ GC_ASSERT((word)start % sizeof(word) == 0);
+ GC_ASSERT(start < finish);
+
if (0 == GC_excl_table_entries) {
- next = 0;
+ next = 0;
} else {
- next = GC_next_exclusion(start);
+ next = GC_next_exclusion(start);
}
if (0 != next) {
if ((word)(next -> e_start) < (word) finish) {
- /* incomplete error check. */
- ABORT("exclusion ranges overlap");
- }
+ /* incomplete error check. */
+ ABORT("exclusion ranges overlap");
+ }
if ((word)(next -> e_start) == (word) finish) {
- /* extend old range backwards */
+ /* extend old range backwards */
next -> e_start = (ptr_t)start;
- return;
+ return;
}
next_index = next - GC_excl_table;
for (i = GC_excl_table_entries; i > next_index; --i) {
- GC_excl_table[i] = GC_excl_table[i-1];
+ GC_excl_table[i] = GC_excl_table[i-1];
}
} else {
next_index = GC_excl_table_entries;
++GC_excl_table_entries;
}
+GC_API void GC_CALL GC_exclude_static_roots(void *b, void *e)
+{
+ DCL_LOCK_STATE;
+
+ /* Adjust the upper boundary for safety (round down) */
+ e = (void *)((word)e & ~(sizeof(word) - 1));
+
+ if (b == e) return; /* nothing to exclude? */
+
+ LOCK();
+ GC_exclude_static_roots_inner(b, e);
+ UNLOCK();
+}
+
/* Invoke push_conditional on ranges that are not excluded. */
/*ARGSUSED*/
STATIC void GC_push_conditional_with_exclusions(ptr_t bottom, ptr_t top,
- GC_bool all)
+ GC_bool all)
{
struct exclusion * next;
ptr_t excl_start;
while (bottom < top) {
next = GC_next_exclusion(bottom);
- if (0 == next || (excl_start = next -> e_start) >= top) {
- GC_push_conditional(bottom, top, all);
- return;
- }
- if (excl_start > bottom) GC_push_conditional(bottom, excl_start, all);
- bottom = next -> e_end;
+ if (0 == next || (excl_start = next -> e_start) >= top) {
+ GC_push_conditional(bottom, top, all);
+ return;
+ }
+ if (excl_start > bottom) GC_push_conditional(bottom, excl_start, all);
+ bottom = next -> e_end;
+ }
+}
+
+#ifdef IA64
+ /* Similar to GC_push_all_stack_frames() but for IA-64 registers store. */
+ GC_INNER void GC_push_all_register_frames(ptr_t bs_lo, ptr_t bs_hi,
+ int eager, struct GC_activation_frame_s *activation_frame)
+ {
+ while (activation_frame != NULL) {
+ ptr_t frame_bs_lo = activation_frame -> backing_store_end;
+ GC_ASSERT(frame_bs_lo <= bs_hi);
+ if (eager) {
+ GC_push_all_eager(frame_bs_lo, bs_hi);
+ } else {
+ GC_push_all_stack(frame_bs_lo, bs_hi);
+ }
+ bs_hi = activation_frame -> saved_backing_store_ptr;
+ activation_frame = activation_frame -> prev;
+ }
+ GC_ASSERT(bs_lo <= bs_hi);
+ if (eager) {
+ GC_push_all_eager(bs_lo, bs_hi);
+ } else {
+ GC_push_all_stack(bs_lo, bs_hi);
+ }
+ }
+#endif /* IA64 */
+
+#ifdef THREADS
+
+GC_INNER void GC_push_all_stack_frames(ptr_t lo, ptr_t hi,
+ struct GC_activation_frame_s *activation_frame)
+{
+ while (activation_frame != NULL) {
+ GC_ASSERT(lo HOTTER_THAN (ptr_t)activation_frame);
+# ifdef STACK_GROWS_UP
+ GC_push_all_stack((ptr_t)activation_frame, lo);
+# else /* STACK_GROWS_DOWN */
+ GC_push_all_stack(lo, (ptr_t)activation_frame);
+# endif
+ lo = activation_frame -> saved_stack_ptr;
+ GC_ASSERT(lo != NULL);
+ activation_frame = activation_frame -> prev;
+ }
+ GC_ASSERT(!(hi HOTTER_THAN lo));
+# ifdef STACK_GROWS_UP
+ /* We got them backwards! */
+ GC_push_all_stack(hi, lo);
+# else /* STACK_GROWS_DOWN */
+ GC_push_all_stack(lo, hi);
+# endif
+}
+
+#else /* !THREADS */
+
+# ifdef TRACE_BUF
+ /* Defined in mark.c. */
+ void GC_add_trace_entry(char *kind, word arg1, word arg2);
+# endif
+
+ /* Similar to GC_push_all_eager, but only the */
+ /* part hotter than cold_gc_frame is scanned */
+ /* immediately. Needed to ensure that callee- */
+ /* save registers are not missed. */
+/*
+ * A version of GC_push_all that treats all interior pointers as valid
+ * and scans part of the area immediately, to make sure that saved
+ * register values are not lost.
+ * Cold_gc_frame delimits the stack section that must be scanned
+ * eagerly. A zero value indicates that no eager scanning is needed.
+ * We don't need to worry about the MANUAL_VDB case here, since this
+ * is only called in the single-threaded case. We assume that we
+ * cannot collect between an assignment and the corresponding
+ * GC_dirty() call.
+ */
+STATIC void GC_push_all_stack_partially_eager(ptr_t bottom, ptr_t top,
+ ptr_t cold_gc_frame)
+{
+ if (!NEED_FIXUP_POINTER && GC_all_interior_pointers) {
+ /* Push the hot end of the stack eagerly, so that register values */
+ /* saved inside GC frames are marked before they disappear. */
+ /* The rest of the marking can be deferred until later. */
+ if (0 == cold_gc_frame) {
+ GC_push_all_stack(bottom, top);
+ return;
}
+ GC_ASSERT(bottom <= cold_gc_frame && cold_gc_frame <= top);
+# ifdef STACK_GROWS_DOWN
+ GC_push_all(cold_gc_frame - sizeof(ptr_t), top);
+ GC_push_all_eager(bottom, cold_gc_frame);
+# else /* STACK_GROWS_UP */
+ GC_push_all(bottom, cold_gc_frame + sizeof(ptr_t));
+ GC_push_all_eager(cold_gc_frame, top);
+# endif /* STACK_GROWS_UP */
+ } else {
+ GC_push_all_eager(bottom, top);
+ }
+# ifdef TRACE_BUF
+ GC_add_trace_entry("GC_push_all_stack", bottom, top);
+# endif
}
- /* Push enough of the current stack eagerly to */
- /* ensure that callee-save registers saved in */
- /* GC frames are scanned. */
- /* In the non-threads case, schedule entire */
- /* stack for scanning. */
- /* The second argument is a pointer to the */
- /* (possibly null) thread context, for */
- /* (currently hypothetical) more precise */
- /* stack scanning. */
+/* Similar to GC_push_all_stack_frames() but also uses cold_gc_frame. */
+STATIC void GC_push_all_stack_part_eager_frames(ptr_t lo, ptr_t hi,
+ ptr_t cold_gc_frame, struct GC_activation_frame_s *activation_frame)
+{
+ GC_ASSERT(activation_frame == NULL || cold_gc_frame == NULL ||
+ cold_gc_frame HOTTER_THAN (ptr_t)activation_frame);
+
+ while (activation_frame != NULL) {
+ GC_ASSERT(lo HOTTER_THAN (ptr_t)activation_frame);
+# ifdef STACK_GROWS_UP
+ GC_push_all_stack_partially_eager((ptr_t)activation_frame, lo,
+ cold_gc_frame);
+# else /* STACK_GROWS_DOWN */
+ GC_push_all_stack_partially_eager(lo, (ptr_t)activation_frame,
+ cold_gc_frame);
+# endif
+ lo = activation_frame -> saved_stack_ptr;
+ GC_ASSERT(lo != NULL);
+ activation_frame = activation_frame -> prev;
+ cold_gc_frame = NULL; /* Use at most once. */
+ }
+
+ GC_ASSERT(!(hi HOTTER_THAN lo));
+# ifdef STACK_GROWS_UP
+ /* We got them backwards! */
+ GC_push_all_stack_partially_eager(hi, lo, cold_gc_frame);
+# else /* STACK_GROWS_DOWN */
+ GC_push_all_stack_partially_eager(lo, hi, cold_gc_frame);
+# endif
+}
+
+#endif /* !THREADS */
+
+ /* Push enough of the current stack eagerly to */
+ /* ensure that callee-save registers saved in */
+ /* GC frames are scanned. */
+ /* In the non-threads case, schedule entire */
+ /* stack for scanning. */
+ /* The second argument is a pointer to the */
+ /* (possibly null) thread context, for */
+ /* (currently hypothetical) more precise */
+ /* stack scanning. */
/*
* In the absence of threads, push the stack contents.
* In the presence of threads, push enough of the current stack
STATIC void GC_push_current_stack(ptr_t cold_gc_frame, void * context)
{
# if defined(THREADS)
- if (0 == cold_gc_frame) return;
+ if (0 == cold_gc_frame) return;
# ifdef STACK_GROWS_DOWN
- GC_push_all_eager(GC_approx_sp(), cold_gc_frame);
- /* For IA64, the register stack backing store is handled */
- /* in the thread-specific code. */
+ GC_push_all_eager(GC_approx_sp(), cold_gc_frame);
+ /* For IA64, the register stack backing store is handled */
+ /* in the thread-specific code. */
# else
- GC_push_all_eager( cold_gc_frame, GC_approx_sp() );
+ GC_push_all_eager(cold_gc_frame, GC_approx_sp());
# endif
# else
-# ifdef STACK_GROWS_DOWN
- GC_push_all_stack_partially_eager( GC_approx_sp(), GC_stackbottom,
- cold_gc_frame );
-# ifdef IA64
- /* We also need to push the register stack backing store. */
- /* This should really be done in the same way as the */
- /* regular stack. For now we fudge it a bit. */
- /* Note that the backing store grows up, so we can't use */
- /* GC_push_all_stack_partially_eager. */
- {
- extern word GC_save_regs_ret_val;
- /* Previously set to backing store pointer. */
- ptr_t bsp = (ptr_t) GC_save_regs_ret_val;
- ptr_t cold_gc_bs_pointer;
- if (GC_all_interior_pointers) {
- cold_gc_bs_pointer = bsp - 2048;
- if (cold_gc_bs_pointer < BACKING_STORE_BASE) {
- cold_gc_bs_pointer = BACKING_STORE_BASE;
- } else {
- GC_push_all_stack(BACKING_STORE_BASE, cold_gc_bs_pointer);
- }
- } else {
- cold_gc_bs_pointer = BACKING_STORE_BASE;
- }
- GC_push_all_eager(cold_gc_bs_pointer, bsp);
- /* All values should be sufficiently aligned that we */
- /* dont have to worry about the boundary. */
- }
-# endif
-# else
- GC_push_all_stack_partially_eager( GC_stackbottom, GC_approx_sp(),
- cold_gc_frame );
+ GC_push_all_stack_part_eager_frames(GC_approx_sp(), GC_stackbottom,
+ cold_gc_frame, GC_activation_frame);
+# ifdef IA64
+ /* We also need to push the register stack backing store. */
+ /* This should really be done in the same way as the */
+ /* regular stack. For now we fudge it a bit. */
+ /* Note that the backing store grows up, so we can't use */
+ /* GC_push_all_stack_partially_eager. */
+ {
+ ptr_t bsp = GC_save_regs_ret_val;
+ ptr_t cold_gc_bs_pointer = bsp - 2048;
+ if (GC_all_interior_pointers &&
+ cold_gc_bs_pointer > BACKING_STORE_BASE) {
+ /* Adjust cold_gc_bs_pointer if below our innermost */
+ /* "activation frame" in backing store. */
+ if (GC_activation_frame != NULL && cold_gc_bs_pointer <
+ GC_activation_frame->backing_store_end)
+ cold_gc_bs_pointer =
+ GC_activation_frame->backing_store_end;
+ GC_push_all_register_frames(BACKING_STORE_BASE,
+ cold_gc_bs_pointer, FALSE, GC_activation_frame);
+ GC_push_all_eager(cold_gc_bs_pointer, bsp);
+ } else {
+ GC_push_all_register_frames(BACKING_STORE_BASE, bsp,
+ TRUE /* eager */, GC_activation_frame);
+ }
+ /* All values should be sufficiently aligned that we */
+ /* don't have to worry about the boundary. */
+ }
# endif
# endif /* !THREADS */
}
-void (*GC_push_typed_structures) (void) = NULL;
+GC_INNER void (*GC_push_typed_structures)(void) = 0;
- /* Push GC internal roots. These are normally */
- /* included in the static data segment, and */
- /* Thus implicitly pushed. But we must do this */
- /* explicitly if normal root processing is */
- /* disabled. */
+ /* Push GC internal roots. These are normally */
+ /* included in the static data segment, and */
+ /* Thus implicitly pushed. But we must do this */
+ /* explicitly if normal root processing is */
+ /* disabled. */
/*
* Push GC internal roots. Only called if there is some reason to believe
* these would not otherwise get registered.
}
#ifdef THREAD_LOCAL_ALLOC
- void GC_mark_thread_local_free_lists(void);
+ GC_INNER void GC_mark_thread_local_free_lists(void);
#endif
-void GC_cond_register_dynamic_libraries(void)
+GC_INNER void GC_cond_register_dynamic_libraries(void)
{
# if defined(DYNAMIC_LOADING) || defined(MSWIN32) || defined(MSWINCE) \
|| defined(PCR)
* A zero value indicates that it's OK to miss some
* register values.
*/
-void GC_push_roots(GC_bool all, ptr_t cold_gc_frame)
+GC_INNER void GC_push_roots(GC_bool all, ptr_t cold_gc_frame)
{
int i;
unsigned kind;
* Next push static data. This must happen early on, since it's
* not robust against mark stack overflow.
*/
- /* Re-register dynamic libraries, in case one got added. */
- /* There is some argument for doing this as late as possible, */
- /* especially on win32, where it can change asynchronously. */
- /* In those cases, we do it here. But on other platforms, it's */
- /* not safe with the world stopped, so we do it earlier. */
+ /* Re-register dynamic libraries, in case one got added. */
+ /* There is some argument for doing this as late as possible, */
+ /* especially on win32, where it can change asynchronously. */
+ /* In those cases, we do it here. But on other platforms, it's */
+ /* not safe with the world stopped, so we do it earlier. */
# if !defined(REGISTER_LIBRARIES_EARLY)
GC_cond_register_dynamic_libraries();
# endif
/* Mark everything in static data areas */
for (i = 0; i < n_root_sets; i++) {
GC_push_conditional_with_exclusions(
- GC_static_roots[i].r_start,
- GC_static_roots[i].r_end, all);
+ GC_static_roots[i].r_start,
+ GC_static_roots[i].r_end, all);
}
- /* Mark all free list header blocks, if those were allocated from */
- /* the garbage collected heap. This makes sure they don't */
- /* disappear if we are not marking from static data. It also */
- /* saves us the trouble of scanning them, and possibly that of */
- /* marking the freelists. */
+ /* Mark all free list header blocks, if those were allocated from */
+ /* the garbage collected heap. This makes sure they don't */
+ /* disappear if we are not marking from static data. It also */
+ /* saves us the trouble of scanning them, and possibly that of */
+ /* marking the freelists. */
for (kind = 0; kind < GC_n_kinds; kind++) {
- void *base = GC_base(GC_obj_kinds[kind].ok_freelist);
- if (0 != base) {
- GC_set_mark_bit(base);
- }
+ void *base = GC_base(GC_obj_kinds[kind].ok_freelist);
+ if (0 != base) {
+ GC_set_mark_bit(base);
+ }
}
-
- /* Mark from GC internal roots if those might otherwise have */
- /* been excluded. */
+
+ /* Mark from GC internal roots if those might otherwise have */
+ /* been excluded. */
if (GC_no_dls || roots_were_cleared) {
- GC_push_gc_structures();
+ GC_push_gc_structures();
}
- /* Mark thread local free lists, even if their mark */
- /* descriptor excludes the link field. */
- /* If the world is not stopped, this is unsafe. It is */
- /* also unnecessary, since we will do this again with the */
- /* world stopped. */
+ /* Mark thread local free lists, even if their mark */
+ /* descriptor excludes the link field. */
+ /* If the world is not stopped, this is unsafe. It is */
+ /* also unnecessary, since we will do this again with the */
+ /* world stopped. */
# if defined(THREAD_LOCAL_ALLOC)
if (GC_world_stopped) GC_mark_thread_local_free_lists();
# endif
GC_push_regs_and_stack(cold_gc_frame);
if (GC_push_other_roots != 0) (*GC_push_other_roots)();
- /* In the threads case, this also pushes thread stacks. */
- /* Note that without interior pointer recognition lots */
- /* of stuff may have been pushed already, and this */
- /* should be careful about mark stack overflows. */
+ /* In the threads case, this also pushes thread stacks. */
+ /* Note that without interior pointer recognition lots */
+ /* of stuff may have been pushed already, and this */
+ /* should be careful about mark stack overflows. */
}
-
projects / cacao.git / blobdiff