From: Tom Tromey <tom@tromey.com>
To: Tom Tromey <tom@tromey.com>
Cc: Simon Marchi <simon.marchi@polymtl.ca>, gdb-patches@sourceware.org
Subject: Re: [RFA] Remove a VEC from record-full.c
Date: Mon, 11 Jun 2018 00:16:00 -0000 [thread overview]
Message-ID: <87in6qch4e.fsf@tromey.com> (raw)
In-Reply-To: <87muw2clw8.fsf@tromey.com> (Tom Tromey's message of "Sun, 10 Jun 2018 16:33:11 -0600")
Simon> Maybe I'm missing something, but it seems like the
Simon> record_full_breakpoint objects are never freed. That's not related to
Simon> your patch though, so your patch LGTM.
Tom> Thanks for noticing this. I think this is a good opportunity to fix the
Tom> problem, so I'll take a look at that.
How about this?
Tom
commit 35490568c3398dc9b11f71b003de1b0f829d039e
Author: Tom Tromey <tom@tromey.com>
Date: Thu Jun 7 17:22:49 2018 -0600
Remove a VEC from record-full.c
This replaces a VEC in record-full.c with a std::vector. This version
of the patch also catches a memory leak in the original code noticed
by Simon.
Tested by the buildbot.
gdb/ChangeLog
2018-06-07 Tom Tromey <tom@tromey.com>
* record-full.c (record_full_breakpoint_p): Remove typedef. Don't
declare VEC. Add constructor.
(record_full_breakpoints): Now a std::vector, static.
(record_full_sync_record_breakpoints)
(record_full_init_record_breakpoints)
(record_full_target::insert_breakpoint)
(record_full_target::remove_breakpoint): Update. Don't use XNEW.
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 0e5c0685cc2..037bd9f5f3e 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,13 @@
+2018-06-07 Tom Tromey <tom@tromey.com>
+
+ * record-full.c (record_full_breakpoint_p): Remove typedef. Don't
+ declare VEC. Add constructor.
+ (record_full_breakpoints): Now a std::vector, static.
+ (record_full_sync_record_breakpoints)
+ (record_full_init_record_breakpoints)
+ (record_full_target::insert_breakpoint)
+ (record_full_target::remove_breakpoint): Update. Don't use XNEW.
+
2018-06-10 Tom Tromey <tom@tromey.com>
* procfs.c (procfs_target::xfer_partial): Use "beneath" as a
diff --git a/gdb/record-full.c b/gdb/record-full.c
index 87c77e06ea9..6fd389d3dcd 100644
--- a/gdb/record-full.c
+++ b/gdb/record-full.c
@@ -1700,6 +1700,15 @@ record_full_target::xfer_partial (enum target_object object,
struct record_full_breakpoint
{
+ record_full_breakpoint (struct address_space *address_space_,
+ CORE_ADDR addr_,
+ int in_target_beneath_)
+ : address_space (address_space_),
+ addr (addr_),
+ in_target_beneath (in_target_beneath_)
+ {
+ }
+
/* The address and address space the breakpoint was set at. */
struct address_space *address_space;
CORE_ADDR addr;
@@ -1710,12 +1719,9 @@ struct record_full_breakpoint
int in_target_beneath;
};
-typedef struct record_full_breakpoint *record_full_breakpoint_p;
-DEF_VEC_P(record_full_breakpoint_p);
-
/* The list of breakpoints inserted while the record target is
active. */
-VEC(record_full_breakpoint_p) *record_full_breakpoints = NULL;
+static std::vector<record_full_breakpoint> record_full_breakpoints;
static void
record_full_sync_record_breakpoints (struct bp_location *loc, void *data)
@@ -1725,14 +1731,10 @@ record_full_sync_record_breakpoints (struct bp_location *loc, void *data)
if (loc->inserted)
{
- struct record_full_breakpoint *bp = XNEW (struct record_full_breakpoint);
-
- bp->addr = loc->target_info.placed_address;
- bp->address_space = loc->target_info.placed_address_space;
-
- bp->in_target_beneath = 1;
-
- VEC_safe_push (record_full_breakpoint_p, record_full_breakpoints, bp);
+ record_full_breakpoints.emplace_back
+ (loc->target_info.placed_address_space,
+ loc->target_info.placed_address,
+ 1);
}
}
@@ -1741,7 +1743,7 @@ record_full_sync_record_breakpoints (struct bp_location *loc, void *data)
static void
record_full_init_record_breakpoints (void)
{
- VEC_free (record_full_breakpoint_p, record_full_breakpoints);
+ record_full_breakpoints.clear ();
iterate_over_bp_locations (record_full_sync_record_breakpoints);
}
@@ -1754,9 +1756,7 @@ int
record_full_target::insert_breakpoint (struct gdbarch *gdbarch,
struct bp_target_info *bp_tgt)
{
- struct record_full_breakpoint *bp;
int in_target_beneath = 0;
- int ix;
if (!RECORD_FULL_IS_REPLAY)
{
@@ -1779,24 +1779,19 @@ record_full_target::insert_breakpoint (struct gdbarch *gdbarch,
/* Use the existing entries if found in order to avoid duplication
in record_full_breakpoints. */
- for (ix = 0;
- VEC_iterate (record_full_breakpoint_p,
- record_full_breakpoints, ix, bp);
- ++ix)
+ for (struct record_full_breakpoint &bp : record_full_breakpoints)
{
- if (bp->addr == bp_tgt->placed_address
- && bp->address_space == bp_tgt->placed_address_space)
+ if (bp.addr == bp_tgt->placed_address
+ && bp.address_space == bp_tgt->placed_address_space)
{
- gdb_assert (bp->in_target_beneath == in_target_beneath);
+ gdb_assert (bp.in_target_beneath == in_target_beneath);
return 0;
}
}
- bp = XNEW (struct record_full_breakpoint);
- bp->addr = bp_tgt->placed_address;
- bp->address_space = bp_tgt->placed_address_space;
- bp->in_target_beneath = in_target_beneath;
- VEC_safe_push (record_full_breakpoint_p, record_full_breakpoints, bp);
+ record_full_breakpoints.emplace_back (bp_tgt->placed_address_space,
+ bp_tgt->placed_address,
+ in_target_beneath);
return 0;
}
@@ -1807,18 +1802,16 @@ record_full_target::remove_breakpoint (struct gdbarch *gdbarch,
struct bp_target_info *bp_tgt,
enum remove_bp_reason reason)
{
- struct record_full_breakpoint *bp;
- int ix;
-
- for (ix = 0;
- VEC_iterate (record_full_breakpoint_p,
- record_full_breakpoints, ix, bp);
- ++ix)
+ for (auto iter = record_full_breakpoints.begin ();
+ iter != record_full_breakpoints.end ();
+ ++iter)
{
- if (bp->addr == bp_tgt->placed_address
- && bp->address_space == bp_tgt->placed_address_space)
+ struct record_full_breakpoint &bp = *iter;
+
+ if (bp.addr == bp_tgt->placed_address
+ && bp.address_space == bp_tgt->placed_address_space)
{
- if (bp->in_target_beneath)
+ if (bp.in_target_beneath)
{
scoped_restore restore_operation_disable
= record_full_gdb_operation_disable_set ();
@@ -1830,10 +1823,7 @@ record_full_target::remove_breakpoint (struct gdbarch *gdbarch,
}
if (reason == REMOVE_BREAKPOINT)
- {
- VEC_unordered_remove (record_full_breakpoint_p,
- record_full_breakpoints, ix);
- }
+ unordered_remove (record_full_breakpoints, iter);
return 0;
}
}
next prev parent reply other threads:[~2018-06-11 0:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-08 2:56 Tom Tromey
2018-06-09 12:11 ` Simon Marchi
2018-06-10 15:57 ` Tom Tromey
2018-06-10 21:16 ` Simon Marchi
2018-06-10 22:35 ` Tom Tromey
2018-06-11 0:16 ` Tom Tromey [this message]
2018-06-11 0:28 ` Simon Marchi
2018-06-11 4:11 ` Tom Tromey
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