You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
79 lines
2.3 KiB
79 lines
2.3 KiB
/*
|
|
* Copyright (C) 2019 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include <errno.h>
|
|
#include <pthread.h>
|
|
#include <signal.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <libgen.h> // For POSIX basename().
|
|
|
|
// Use _system_properties.h to use __system_property_wait_any()
|
|
#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_
|
|
#include <sys/_system_properties.h>
|
|
|
|
#include "profile-extras.h"
|
|
|
|
extern "C" {
|
|
|
|
void __gcov_dump(void);
|
|
void __gcov_reset(void);
|
|
|
|
// storing SIG_ERR helps us detect (unlikely) looping.
|
|
static sighandler_t chained_gcov_signal_handler = SIG_ERR;
|
|
|
|
static void gcov_signal_handler(int signum) {
|
|
__gcov_dump();
|
|
__gcov_reset();
|
|
if (chained_gcov_signal_handler != SIG_ERR &&
|
|
chained_gcov_signal_handler != SIG_IGN &&
|
|
chained_gcov_signal_handler != SIG_DFL) {
|
|
(chained_gcov_signal_handler)(signum);
|
|
}
|
|
}
|
|
|
|
__attribute__((weak)) int init_profile_extras_once = 0;
|
|
|
|
// Initialize libprofile-extras:
|
|
// - Install a signal handler that triggers __gcov_flush on <COVERAGE_FLUSH_SIGNAL>.
|
|
//
|
|
// We want this initiazlier to run during load time.
|
|
//
|
|
// Just marking init_profile_extras() with __attribute__((constructor)) isn't
|
|
// enough since the linker drops it from its output since no other symbol from
|
|
// this static library is referenced.
|
|
//
|
|
// We force the linker to include init_profile_extras() by passing
|
|
// '-uinit_profile_extras' to the linker (in build/soong).
|
|
__attribute__((constructor)) int init_profile_extras(void) {
|
|
if (init_profile_extras_once)
|
|
return 0;
|
|
init_profile_extras_once = 1;
|
|
|
|
// is this instance already registered?
|
|
if (chained_gcov_signal_handler != SIG_ERR) {
|
|
return -1;
|
|
}
|
|
sighandler_t ret1 = signal(COVERAGE_FLUSH_SIGNAL, gcov_signal_handler);
|
|
if (ret1 == SIG_ERR) {
|
|
return -1;
|
|
}
|
|
chained_gcov_signal_handler = ret1;
|
|
|
|
return 0;
|
|
}
|
|
}
|