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Kirill Smelkov
bcc
Commits
488c119e
Commit
488c119e
authored
Sep 13, 2017
by
Teng Qin
Committed by
Brenden Blanco
Sep 13, 2017
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Deduplicate USDT probe locations
parent
486d348f
Changes
2
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2 changed files
with
18 additions
and
0 deletions
+18
-0
src/cc/usdt.h
src/cc/usdt.h
+1
-0
src/cc/usdt/usdt.cc
src/cc/usdt/usdt.cc
+17
-0
No files found.
src/cc/usdt.h
View file @
488c119e
...
...
@@ -181,6 +181,7 @@ public:
return
largest_arg_type
(
arg_index
);
}
void
finalize_locations
();
bool
need_enable
()
const
{
return
semaphore_
!=
0x0
;
}
bool
enable
(
const
std
::
string
&
fn_name
);
bool
disable
();
...
...
src/cc/usdt/usdt.cc
View file @
488c119e
...
...
@@ -13,6 +13,7 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <algorithm>
#include <cstring>
#include <sstream>
#include <unordered_set>
...
...
@@ -197,6 +198,18 @@ void Probe::add_location(uint64_t addr, const char *fmt) {
locations_
.
emplace_back
(
addr
,
fmt
);
}
void
Probe
::
finalize_locations
()
{
std
::
sort
(
locations_
.
begin
(),
locations_
.
end
(),
[](
const
Location
&
a
,
const
Location
&
b
)
{
return
a
.
address_
<
b
.
address_
;
});
auto
last
=
std
::
unique
(
locations_
.
begin
(),
locations_
.
end
(),
[](
const
Location
&
a
,
const
Location
&
b
)
{
return
a
.
address_
==
b
.
address_
;
});
locations_
.
erase
(
last
,
locations_
.
end
());
}
void
Context
::
_each_probe
(
const
char
*
binpath
,
const
struct
bcc_elf_usdt
*
probe
,
void
*
p
)
{
Context
*
ctx
=
static_cast
<
Context
*>
(
p
);
...
...
@@ -294,6 +307,8 @@ Context::Context(const std::string &bin_path)
loaded_
=
true
;
}
}
for
(
const
auto
&
probe
:
probes_
)
probe
->
finalize_locations
();
}
Context
::
Context
(
int
pid
)
:
pid_
(
pid
),
pid_stat_
(
pid
),
...
...
@@ -313,6 +328,8 @@ Context::Context(int pid) : pid_(pid), pid_stat_(pid),
loaded_
=
true
;
}
for
(
const
auto
&
probe
:
probes_
)
probe
->
finalize_locations
();
}
Context
::~
Context
()
{
...
...
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