Author: Armin Rigo <[email protected]>
Branch: c7
Changeset: r634:28dac27037ba
Date: 2014-01-17 19:12 +0100
http://bitbucket.org/pypy/stmgc/changeset/28dac27037ba/
Log: Bunch the swap_nodes
diff --git a/c7/core.c b/c7/core.c
--- a/c7/core.c
+++ b/c7/core.c
@@ -986,5 +986,6 @@
assert(_STM_TL1->jmpbufptr != (jmpbufptr_t *)-1); /* for tests only */
_STM_TL2->running_transaction = 0;
stm_stop_lock();
+ fprintf(stderr, "aborted\n");
__builtin_longjmp(*_STM_TL1->jmpbufptr, 1);
}
diff --git a/c7/demo2.c b/c7/demo2.c
--- a/c7/demo2.c
+++ b/c7/demo2.c
@@ -7,7 +7,8 @@
#include "core.h"
-#define LIST_LENGTH 2000
+#define LIST_LENGTH 5000
+#define BUNCH 400
typedef TLPREFIX struct node_s node_t;
typedef node_t* nodeptr_t;
@@ -71,41 +72,49 @@
goto back;
}
-nodeptr_t swap_nodes(nodeptr_t prev)
+nodeptr_t swap_nodes(nodeptr_t initial)
{
jmpbufptr_t here;
- assert(prev != NULL);
+ assert(initial != NULL);
back:
if (__builtin_setjmp(here) == 0) {
stm_start_transaction(&here);
+ nodeptr_t prev = initial;
+ stm_read((objptr_t)prev);
- stm_read((objptr_t)prev);
- nodeptr_t current = prev->next;
- if (current == NULL) {
- stm_stop_transaction();
- return NULL;
- }
- stm_read((objptr_t)current);
- nodeptr_t next = current->next;
- if (next == NULL) {
- stm_stop_transaction();
- return NULL;
- }
- stm_read((objptr_t)next);
-
- if (next->value < current->value) {
- stm_write((objptr_t)prev);
- stm_write((objptr_t)current);
- stm_write((objptr_t)next);
+ int i;
+ for (i=0; i<BUNCH; i++) {
+ nodeptr_t current = prev->next;
+ if (current == NULL) {
+ stm_stop_transaction();
+ return NULL;
+ }
+ stm_read((objptr_t)current);
+ nodeptr_t next = current->next;
+ if (next == NULL) {
+ stm_stop_transaction();
+ return NULL;
+ }
+ stm_read((objptr_t)next);
- prev->next = next;
- current->next = next->next;
- next->next = current;
+ if (next->value < current->value) {
+ stm_write((objptr_t)prev);
+ stm_write((objptr_t)current);
+ stm_write((objptr_t)next);
+
+ prev->next = next;
+ current->next = next->next;
+ next->next = current;
+
+ _stm_start_safe_point();
+ _stm_stop_safe_point();
+ }
+ prev = current;
}
stm_stop_transaction();
- return current;
+ return prev;
}
goto back;
}
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