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authorPaweł Kołodziejski2009-02-19 08:43:28 +0000
committerPaweł Kołodziejski2009-02-19 08:43:28 +0000
commit8ca98d41a23d7f26162bae3784fb3be3e5e5fcac (patch)
treeec256ea983813e12049fb2e262c4e4f63bad6315 /engines/sci/engine
parentf3d8087dd3a5aa92ff020b38536bc9c6ac496b23 (diff)
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formating
svn-id: r38537
Diffstat (limited to 'engines/sci/engine')
-rw-r--r--engines/sci/engine/gc.cpp110
1 files changed, 42 insertions, 68 deletions
diff --git a/engines/sci/engine/gc.cpp b/engines/sci/engine/gc.cpp
index 7824595229..86ab8f3cd5 100644
--- a/engines/sci/engine/gc.cpp
+++ b/engines/sci/engine/gc.cpp
@@ -27,8 +27,8 @@
#define WORKLIST_CHUNK_SIZE 32
-/*#define DEBUG_GC*/
-/*#define DEBUG_GC_VERBOSE*/
+//#define DEBUG_GC
+//#define DEBUG_GC_VERBOSE
typedef struct _worklist {
int used;
@@ -36,33 +36,29 @@ typedef struct _worklist {
struct _worklist *next;
} worklist_t;
-static worklist_t *
-fresh_worklist(worklist_t *old) {
+static worklist_t *fresh_worklist(worklist_t *old) {
worklist_t *retval = (worklist_t*)sci_malloc(sizeof(worklist_t));
retval->used = 0;
retval->next = old;
return retval;
}
-static worklist_t *
-new_worklist() {
+static worklist_t *new_worklist() {
return fresh_worklist(NULL);
}
-static void
-worklist_push(worklist_t **wlp, reg_t_hash_map *hashmap, reg_t reg) {
+static void worklist_push(worklist_t **wlp, reg_t_hash_map *hashmap, reg_t reg) {
worklist_t *wl = *wlp;
- if (!reg.segment) /* No numbers */
+ if (!reg.segment) // No numbers
return;
#ifdef DEBUG_GC_VERBOSE
sciprintf("[GC] Adding "PREG"\n", PRINT_REG(reg));
#endif
-
if (hashmap->contains(reg))
- return; /* already dealt with it */
+ return; // already dealt with it
hashmap->setVal(reg, true);
@@ -72,13 +68,11 @@ worklist_push(worklist_t **wlp, reg_t_hash_map *hashmap, reg_t reg) {
wl->entries[wl->used++] = reg;
}
-static int
-worklist_has_next(worklist_t *wl) {
+static int worklist_has_next(worklist_t *wl) {
return (wl && wl->used);
}
-static reg_t
-worklist_pop(worklist_t **wlp) {
+static reg_t worklist_pop(worklist_t **wlp) {
worklist_t *wl = *wlp;
reg_t retval;
@@ -97,8 +91,7 @@ worklist_pop(worklist_t **wlp) {
return retval;
}
-static void
-free_worklist(worklist_t *wl) {
+static void free_worklist(worklist_t *wl) {
if (wl) {
if (wl->next)
free_worklist(wl->next);
@@ -106,17 +99,14 @@ free_worklist(worklist_t *wl) {
}
}
-static reg_t_hash_map *
-normalise_hashmap_ptrs(reg_t_hash_map *nonnormal_map, seg_interface_t **interfaces, int interfaces_nr) {
+static reg_t_hash_map * normalise_hashmap_ptrs(reg_t_hash_map *nonnormal_map, seg_interface_t **interfaces, int interfaces_nr) {
reg_t_hash_map *normal_map = new reg_t_hash_map();
for (reg_t_hash_map::iterator i = nonnormal_map->begin(); i != nonnormal_map->end(); ++i) {
seg_interface_t *interfce;
reg_t reg = i->_key;
- interfce = (reg.segment < interfaces_nr)
- ? interfaces[reg.segment]
- : NULL;
-
+ interfce = (reg.segment < interfaces_nr) ? interfaces[reg.segment] : NULL;
+
if (interfce) {
reg = interfce->find_canonic_address(interfce, reg);
normal_map->setVal(reg, true);
@@ -132,14 +122,12 @@ typedef struct {
worklist_t **worklist_ref;
} worklist_manager_t;
-void
-add_outgoing_refs(void *pre_wm, reg_t addr) {
+void add_outgoing_refs(void *pre_wm, reg_t addr) {
worklist_manager_t *wm = (worklist_manager_t *) pre_wm;
worklist_push(wm->worklist_ref, wm->nonnormal_map, addr);
}
-reg_t_hash_map *
-find_all_used_references(state_t *s) {
+reg_t_hash_map *find_all_used_references(state_t *s) {
seg_manager_t *sm = &(s->seg_manager);
seg_interface_t **interfaces = (seg_interface_t**)sci_calloc(sizeof(seg_interface_t *), sm->heap_size);
reg_t_hash_map *nonnormal_map = new reg_t_hash_map();
@@ -157,12 +145,12 @@ find_all_used_references(state_t *s) {
else
interfaces[i] = get_seg_interface(sm, i);
- /* Initialise */
- /* Init: Registers */
+ // Initialise
+ // Init: Registers
worklist_push(&worklist, nonnormal_map, s->r_acc);
worklist_push(&worklist, nonnormal_map, s->r_prev);
- /* Init: Value Stack */
- /* We do this one by hand since the stack doesn't know the current execution stack */
+ // Init: Value Stack
+ // We do this one by hand since the stack doesn't know the current execution stack
{
exec_stack_t *xs = s->execution_stack + s->execution_stack_pos;
reg_t *pos;
@@ -174,8 +162,7 @@ find_all_used_references(state_t *s) {
sciprintf("[GC] -- Finished adding value stack");
#endif
-
- /* Init: Execution Stack */
+ // Init: Execution Stack
for (i = 0; i <= s->execution_stack_pos; i++) {
exec_stack_t *es = s->execution_stack + i;
@@ -190,24 +177,22 @@ find_all_used_references(state_t *s) {
sciprintf("[GC] -- Finished adding execution stack");
#endif
- /* Init: Explicitly loaded scripts */
+ // Init: Explicitly loaded scripts
for (i = 1; i < sm->heap_size; i++)
if (interfaces[i]
&& interfaces[i]->type_id == MEM_OBJ_SCRIPT) {
script_t *script = &(interfaces[i]->mobj->data.script);
- if (script->lockers) { /* Explicitly loaded? */
+ if (script->lockers) { // Explicitly loaded?
int obj_nr;
- /* Locals, if present */
+ // Locals, if present
worklist_push(&worklist, nonnormal_map, make_reg(script->locals_segment, 0));
- /* All objects (may be classes, may be indirectly reachable) */
+ // All objects (may be classes, may be indirectly reachable)
for (obj_nr = 0; obj_nr < script->objects_nr; obj_nr++) {
object_t *obj = script->objects + obj_nr;
- worklist_push(&worklist,
- nonnormal_map,
- obj->pos);
+ worklist_push(&worklist, nonnormal_map, obj->pos);
}
}
}
@@ -215,37 +200,33 @@ find_all_used_references(state_t *s) {
sciprintf("[GC] -- Finished explicitly loaded scripts, done with root set");
#endif
-
- /* Run Worklist Algorithm */
+ // Run Worklist Algorithm
while (worklist_has_next(worklist)) {
reg_t reg = worklist_pop(&worklist);
- if (reg.segment != s->stack_segment) { /* No need to repeat this one */
+ if (reg.segment != s->stack_segment) { // No need to repeat this one
#ifdef DEBUG_GC_VERBOSE
sciprintf("[GC] Checking "PREG"\n", PRINT_REG(reg));
#endif
- if (reg.segment < sm->heap_size
- && interfaces[reg.segment])
- interfaces[reg.segment]->list_all_outgoing_references(interfaces[reg.segment],
- s,
- reg,
- &worklist_manager,
- add_outgoing_refs);
+ if (reg.segment < sm->heap_size && interfaces[reg.segment])
+ interfaces[reg.segment]->list_all_outgoing_references(interfaces[reg.segment], s, reg,
+ &worklist_manager, add_outgoing_refs);
}
}
- /* Normalise */
+ // Normalise
normal_map = normalise_hashmap_ptrs(nonnormal_map, interfaces, sm->heap_size);
- /* Cleanup */
+ // Cleanup
for (i = 1; i < sm->heap_size; i++)
if (interfaces[i])
interfaces[i]->deallocate_self(interfaces[i]);
+
free(interfaces);
delete nonnormal_map;
+
return normal_map;
}
-
typedef struct {
seg_interface_t *interfce;
#ifdef DEBUG_GC
@@ -255,13 +236,12 @@ typedef struct {
reg_t_hash_map *use_map;
} deallocator_t;
-void
-free_unless_used(void *pre_use_map, reg_t addr) {
- deallocator_t *deallocator = (deallocator_t *) pre_use_map;
+void free_unless_used(void *pre_use_map, reg_t addr) {
+ deallocator_t *deallocator = (deallocator_t *)pre_use_map;
reg_t_hash_map *use_map = deallocator->use_map;
if (!use_map->contains(addr)) {
- /* Not found -> we can free it */
+ // Not found -> we can free it
deallocator->interfce->free_at_address(deallocator->interfce, addr);
#ifdef DEBUG_GC
sciprintf("[GC] Deallocating "PREG"\n", PRINT_REG(addr));
@@ -271,8 +251,7 @@ free_unless_used(void *pre_use_map, reg_t addr) {
}
-void
-run_gc(state_t *s) {
+void run_gc(state_t *s) {
int seg_nr;
deallocator_t deallocator;
seg_manager_t *sm = &(s->seg_manager);
@@ -285,19 +264,16 @@ run_gc(state_t *s) {
deallocator.use_map = find_all_used_references(s);
- for (seg_nr = 1; seg_nr < sm->heap_size; seg_nr++)
+ for (seg_nr = 1; seg_nr < sm->heap_size; seg_nr++) {
if (sm->heap[seg_nr] != NULL) {
deallocator.interfce = get_seg_interface(sm, seg_nr);
#ifdef DEBUG_GC
deallocator.segnames[deallocator.interfce->type_id] = deallocator.interfce->type;
#endif
-
- deallocator.interfce->list_all_deallocatable(deallocator.interfce,
- &deallocator,
- free_unless_used);
-
+ deallocator.interfce->list_all_deallocatable(deallocator.interfce, &deallocator, free_unless_used);
deallocator.interfce->deallocate_self(deallocator.interfce);
}
+ }
delete deallocator.use_map;
@@ -307,9 +283,7 @@ run_gc(state_t *s) {
sciprintf("[GC] Summary:\n");
for (i = 0; i <= MEM_OBJ_MAX; i++)
if (deallocator.segcount[i])
- sciprintf("\t%d\t* %s\n",
- deallocator.segcount[i],
- deallocator.segnames[i]);
+ sciprintf("\t%d\t* %s\n", deallocator.segcount[i], deallocator.segnames[i]);
}
#endif
}