perf tools: Add on_exit implementation
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>
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index d80a333..a7d8745 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -753,6 +753,12 @@
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
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index e9231659..73b5d7f 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -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
diff --git a/tools/perf/config/feature-tests.mak b/tools/perf/config/feature-tests.mak
index 4add41b..eaeb0fd 100644
--- a/tools/perf/config/feature-tests.mak
+++ b/tools/perf/config/feature-tests.mak
@@ -203,4 +203,13 @@
return audit_open();
}
endef
-endif
\ No newline at end of file
+endif
+
+define SOURCE_ON_EXIT
+#include <stdio.h>
+
+int main(void)
+{
+ return on_exit(NULL, NULL);
+}
+endef