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From: <sv...@va...> - 2016-02-14 22:14:28
|
Author: philippe
Date: Sun Feb 14 22:14:19 2016
New Revision: 15787
Log:
Fix Bug 359133 - m_deduppoolalloc.c:258 (vgPlain_allocEltDedupPA): Assertion 'eltSzB <= ddpa->poolSzB' failed.
When the elt to allocate is bigger than the pool size, allocate
a specific pool only for this element.
Modified:
trunk/NEWS
trunk/coregrind/m_deduppoolalloc.c
Modified: trunk/NEWS
==============================================================================
--- trunk/NEWS (original)
+++ trunk/NEWS Sun Feb 14 22:14:19 2016
@@ -70,6 +70,7 @@
357871 pthread_spin_destroy not properly wrapped
357887 Fix a file handle leak. VG_(fclose) did not close the file
358030 support direct socket calls on x86 32bit (new in linux 4.3)
+359133 Assertion 'eltSzB <= ddpa->poolSzB' failed
n-i-bz Fix incorrect (or infinite loop) unwind on RHEL7 x86 32 bits
n-i-bz massif --pages-as-heap=yes does not report peak caused by mmap+munmap
Modified: trunk/coregrind/m_deduppoolalloc.c
==============================================================================
--- trunk/coregrind/m_deduppoolalloc.c (original)
+++ trunk/coregrind/m_deduppoolalloc.c Sun Feb 14 22:14:19 2016
@@ -255,7 +255,6 @@
ht_node *ht_ins;
vg_assert(ddpa);
vg_assert(ddpa->ht_elements);
- vg_assert (eltSzB <= ddpa->poolSzB);
ddpa->nr_alloc_calls++;
@@ -272,15 +271,24 @@
and insert it in the hash table of inserted elements. */
// Add a new pool or grow pool if not enough space in the current pool
- if (UNLIKELY(ddpa->curpool_free == NULL
- || ddpa->curpool_free + eltSzB - 1 > ddpa->curpool_limit)) {
- ddpa_add_new_pool_or_grow (ddpa);
+ if (eltSzB + ddpa->eltAlign > ddpa->poolSzB) {
+ // Element (+eltAlign for worst case) bigger than the pool size
+ // => allocate a specific pool just for this element
+ UChar *newpool = ddpa->alloc_fn (ddpa->cc, eltSzB + ddpa->eltAlign);
+ /* add to our collection of pools */
+ VG_(addToXA)( ddpa->pools, &newpool );
+ elt_ins = ddpa_align (ddpa, newpool);
+ } else {
+ if (UNLIKELY(ddpa->curpool_free == NULL
+ || ddpa->curpool_free + eltSzB - 1 > ddpa->curpool_limit)) {
+ ddpa_add_new_pool_or_grow (ddpa);
+ }
+ elt_ins = ddpa->curpool_free;
+ ddpa->curpool_free = ddpa_align(ddpa, ddpa->curpool_free + eltSzB);
}
- elt_ins = ddpa->curpool_free;
- VG_(memcpy)(elt_ins, elt, eltSzB);
- ddpa->curpool_free = ddpa_align(ddpa, ddpa->curpool_free + eltSzB);
+ VG_(memcpy)(elt_ins, elt, eltSzB);
ht_ins = VG_(allocEltPA) (ddpa->ht_node_pa);
ht_ins->key = ht_elt.key;
ht_ins->eltSzB = eltSzB;
|
|
From: Philippe W. <phi...@sk...> - 2016-02-14 18:00:18
|
On Sun, 2016-02-07 at 03:10 +0000, William Good wrote: > > Thanks for your response I. Very helpful slides. As a follow up > question is it possible to use thread local storage in a valgrind > tool? > ______________________________________________________________________ When I prototyped a 'parallel valgrind', I did some trials of using thread local storage : TLS variables started to work on linux, but nothing tried/examined for Android or MacOs. Again, nothing that can be committed. Philippe |
|
From: Philippe W. <phi...@sk...> - 2016-02-14 17:57:08
|
On Sat, 2016-02-06 at 11:33 +0100, Ivo Raisr wrote: > An ideal situation would be if Valgrind core provides efficient > synchronization mechanisms which all analysis tools can consume. > Maybe Philippe could comment if there is anything usable from his > prototype. The prototype was a 'real prototype', i.e. trying to explore possibilities/problems/issues/... . So, no, in the current state, there is nothing that can be committed. Philippe |