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[PATCH 2/2] Use gdbarch obstack to allocate the TYPE_NAME string in arch_type
- From: Patrick Palka <patrick at parcs dot ath dot cx>
- To: gdb-patches at sourceware dot org
- Cc: xdje42 at gmail dot com, Patrick Palka <patrick at parcs dot ath dot cx>
- Date: Sat, 29 Aug 2015 18:33:20 -0400
- Subject: [PATCH 2/2] Use gdbarch obstack to allocate the TYPE_NAME string in arch_type
- Authentication-results: sourceware.org; auth=none
- References: <CA+C-WL9MJMGm8xEJMeHzWC-A=s2qPAty76S2q3FgRf=pnfi7KA at mail dot gmail dot com>
[ The earlier committed version of this patch was reverted. ]
Since the type whose name is being set is now being allocated on the
gdbarch obstack, we should allocate its TYPE_NAME on the obstack too.
This reduces the number of individual valgrind warnings for the command
"gdb gdb" from ~300 to ~150.
Tested on x86_64-unknown-linux-gnu.
gdb/ChangeLog:
* gdb_obstack.h (obstack_strdup): Declare.
* gdb_obstack.c (obstack_strdup): Declare.
* gdbarch.sh (gdbarch_obstack_strdup): Declare and define.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
* gdbtypes.c (arch_type): Use gdbarch_obstack_strdup.
---
gdb/gdb_obstack.c | 10 ++++++++++
gdb/gdb_obstack.h | 5 +++++
gdb/gdbarch.c | 8 ++++++++
gdb/gdbarch.h | 5 +++++
gdb/gdbarch.sh | 13 +++++++++++++
gdb/gdbtypes.c | 2 +-
6 files changed, 42 insertions(+), 1 deletion(-)
diff --git a/gdb/gdb_obstack.c b/gdb/gdb_obstack.c
index b972eab..d8d03df 100644
--- a/gdb/gdb_obstack.c
+++ b/gdb/gdb_obstack.c
@@ -45,3 +45,13 @@ obconcat (struct obstack *obstackp, ...)
return obstack_finish (obstackp);
}
+
+/* See gdb_obstack.h. */
+
+char *
+obstack_strdup (struct obstack *obstackp, const char *string)
+{
+ char *obstring = obstack_alloc (obstackp, strlen (string) + 1);
+ strcpy (obstring, string);
+ return obstring;
+}
diff --git a/gdb/gdb_obstack.h b/gdb/gdb_obstack.h
index 826c8b2..3272721 100644
--- a/gdb/gdb_obstack.h
+++ b/gdb/gdb_obstack.h
@@ -58,4 +58,9 @@
extern char *obconcat (struct obstack *obstackp, ...) ATTRIBUTE_SENTINEL;
+/* Duplicate STRING, returning an equivalent string that's allocated on the
+ obstack OBSTACKP. */
+
+extern char *obstack_strdup (struct obstack *obstackp, const char *string);
+
#endif
diff --git a/gdb/gdbarch.c b/gdb/gdbarch.c
index 0d4142b..f04eef9 100644
--- a/gdb/gdbarch.c
+++ b/gdb/gdbarch.c
@@ -449,6 +449,14 @@ gdbarch_obstack_zalloc (struct gdbarch *arch, long size)
return data;
}
+/* See gdbarch.h. */
+
+char *
+gdbarch_obstack_strdup (struct gdbarch *arch, const char *string)
+{
+ return obstack_strdup (arch->obstack, string);
+}
+
/* Free a gdbarch struct. This should never happen in normal
operation --- once you've created a gdbarch, you keep it around.
diff --git a/gdb/gdbarch.h b/gdb/gdbarch.h
index 7df37c9..82e0259 100644
--- a/gdb/gdbarch.h
+++ b/gdb/gdbarch.h
@@ -1618,6 +1618,11 @@ extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
#define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
#define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
+/* Duplicate STRING, returning an equivalent string that's allocated on the
+ obstack associated with GDBARCH. The string is freed when the corresponding
+ architecture is also freed. */
+
+extern char *gdbarch_obstack_strdup (struct gdbarch *arch, const char *string);
/* Helper function. Force an update of the current architecture.
diff --git a/gdb/gdbarch.sh b/gdb/gdbarch.sh
index 34e6a74..388920f 100755
--- a/gdb/gdbarch.sh
+++ b/gdb/gdbarch.sh
@@ -1486,6 +1486,11 @@ extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
#define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
#define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
+/* Duplicate STRING, returning an equivalent string that's allocated on the
+ obstack associated with GDBARCH. The string is freed when the corresponding
+ architecture is also freed. */
+
+extern char *gdbarch_obstack_strdup (struct gdbarch *arch, const char *string);
/* Helper function. Force an update of the current architecture.
@@ -1791,6 +1796,14 @@ gdbarch_obstack_zalloc (struct gdbarch *arch, long size)
return data;
}
+/* See gdbarch.h. */
+
+char *
+gdbarch_obstack_strdup (struct gdbarch *arch, const char *string)
+{
+ return obstack_strdup (arch->obstack, string);
+}
+
/* Free a gdbarch struct. This should never happen in normal
operation --- once you've created a gdbarch, you keep it around.
diff --git a/gdb/gdbtypes.c b/gdb/gdbtypes.c
index 7a18bed..12ff014 100644
--- a/gdb/gdbtypes.c
+++ b/gdb/gdbtypes.c
@@ -4549,7 +4549,7 @@ arch_type (struct gdbarch *gdbarch,
TYPE_LENGTH (type) = length;
if (name)
- TYPE_NAME (type) = xstrdup (name);
+ TYPE_NAME (type) = gdbarch_obstack_strdup (gdbarch, name);
return type;
}
--
2.5.1.426.g4b27743.dirty