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perf tools: Add on_exit implementation

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on_exit() is only available in new versions of glibc.
It is not implemented in Bionic and will lead to linking errors when
compiling for Android.

Implement a wrapper for on_exit using atexit.

The implementation for on_exit is the one sent by Bernhard Rosenkraenzer in
https://lkml.org/lkml/2012/8/23/316. The configuration part from the Makefile
is different than the one from the original patch.

Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@linaro.org>
Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Irina Tirdea <irina.tirdea@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1349678613-7045-2-git-send-email-irina.tirdea@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Bernhard Rosenkraenzer 2012-10-08 09:43:26 +03:00 committed by Arnaldo Carvalho de Melo
parent 355afe8163
commit 78da39faf7
3 changed files with 48 additions and 1 deletions
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6
tools/perf/Makefile
View File

@ -753,6 +753,12 @@ ifndef NO_STRLCPY
endif
endif
ifndef NO_ON_EXIT
ifeq ($(call try-cc,$(SOURCE_ON_EXIT),),y)
BASIC_CFLAGS += -DHAVE_ON_EXIT
endif
endif
ifndef NO_BACKTRACE
ifeq ($(call try-cc,$(SOURCE_BACKTRACE),),y)
BASIC_CFLAGS += -DBACKTRACE_SUPPORT

32
tools/perf/builtin-record.c
View File

@ -31,6 +31,38 @@
#include <sched.h>
#include <sys/mman.h>
#ifndef HAVE_ON_EXIT
#ifndef ATEXIT_MAX
#define ATEXIT_MAX 32
#endif
static int __on_exit_count = 0;
typedef void (*on_exit_func_t) (int, void *);
static on_exit_func_t __on_exit_funcs[ATEXIT_MAX];
static void *__on_exit_args[ATEXIT_MAX];
static int __exitcode = 0;
static void __handle_on_exit_funcs(void);
static int on_exit(on_exit_func_t function, void *arg);
#define exit(x) (exit)(__exitcode = (x))
static int on_exit(on_exit_func_t function, void *arg)
{
if (__on_exit_count == ATEXIT_MAX)
return -ENOMEM;
else if (__on_exit_count == 0)
atexit(__handle_on_exit_funcs);
__on_exit_funcs[__on_exit_count] = function;
__on_exit_args[__on_exit_count++] = arg;
return 0;
}
static void __handle_on_exit_funcs(void)
{
int i;
for (i = 0; i < __on_exit_count; i++)
__on_exit_funcs[i] (__exitcode, __on_exit_args[i]);
}
#endif
enum write_mode_t {
WRITE_FORCE,
WRITE_APPEND

9
tools/perf/config/feature-tests.mak
View File

@ -204,3 +204,12 @@ int main(void)
}
endef
endif
define SOURCE_ON_EXIT
#include <stdio.h>
int main(void)
{
return on_exit(NULL, NULL);
}
endef