1*00c7fec1SAndroid Build Coastguard Worker /*
2*00c7fec1SAndroid Build Coastguard Worker * Copyright (C) 2012 The Android Open Source Project
3*00c7fec1SAndroid Build Coastguard Worker *
4*00c7fec1SAndroid Build Coastguard Worker * Licensed under the Apache License, Version 2.0 (the "License");
5*00c7fec1SAndroid Build Coastguard Worker * you may not use this file except in compliance with the License.
6*00c7fec1SAndroid Build Coastguard Worker * You may obtain a copy of the License at
7*00c7fec1SAndroid Build Coastguard Worker *
8*00c7fec1SAndroid Build Coastguard Worker * http://www.apache.org/licenses/LICENSE-2.0
9*00c7fec1SAndroid Build Coastguard Worker *
10*00c7fec1SAndroid Build Coastguard Worker * Unless required by applicable law or agreed to in writing, software
11*00c7fec1SAndroid Build Coastguard Worker * distributed under the License is distributed on an "AS IS" BASIS,
12*00c7fec1SAndroid Build Coastguard Worker * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13*00c7fec1SAndroid Build Coastguard Worker * See the License for the specific language governing permissions and
14*00c7fec1SAndroid Build Coastguard Worker * limitations under the License.
15*00c7fec1SAndroid Build Coastguard Worker */
16*00c7fec1SAndroid Build Coastguard Worker
17*00c7fec1SAndroid Build Coastguard Worker #include <cutils/trace.h>
18*00c7fec1SAndroid Build Coastguard Worker
19*00c7fec1SAndroid Build Coastguard Worker #include "trace-dev.inc"
20*00c7fec1SAndroid Build Coastguard Worker
21*00c7fec1SAndroid Build Coastguard Worker static pthread_once_t atrace_once_control = PTHREAD_ONCE_INIT;
22*00c7fec1SAndroid Build Coastguard Worker
23*00c7fec1SAndroid Build Coastguard Worker // Set whether tracing is enabled in this process. This is used to prevent
24*00c7fec1SAndroid Build Coastguard Worker // the Zygote process from tracing.
atrace_set_tracing_enabled(bool enabled)25*00c7fec1SAndroid Build Coastguard Worker void atrace_set_tracing_enabled(bool enabled)
26*00c7fec1SAndroid Build Coastguard Worker {
27*00c7fec1SAndroid Build Coastguard Worker atomic_store_explicit(&atrace_is_enabled, enabled, memory_order_release);
28*00c7fec1SAndroid Build Coastguard Worker atrace_update_tags();
29*00c7fec1SAndroid Build Coastguard Worker }
30*00c7fec1SAndroid Build Coastguard Worker
atrace_init_once()31*00c7fec1SAndroid Build Coastguard Worker static void atrace_init_once()
32*00c7fec1SAndroid Build Coastguard Worker {
33*00c7fec1SAndroid Build Coastguard Worker atrace_marker_fd = open("/sys/kernel/tracing/trace_marker", O_WRONLY | O_CLOEXEC);
34*00c7fec1SAndroid Build Coastguard Worker if (atrace_marker_fd == -1) {
35*00c7fec1SAndroid Build Coastguard Worker atrace_marker_fd = open("/sys/kernel/debug/tracing/trace_marker", O_WRONLY | O_CLOEXEC);
36*00c7fec1SAndroid Build Coastguard Worker }
37*00c7fec1SAndroid Build Coastguard Worker
38*00c7fec1SAndroid Build Coastguard Worker if (atrace_marker_fd == -1) {
39*00c7fec1SAndroid Build Coastguard Worker ALOGE("Error opening trace file: %s (%d)", strerror(errno), errno);
40*00c7fec1SAndroid Build Coastguard Worker atrace_enabled_tags = 0;
41*00c7fec1SAndroid Build Coastguard Worker } else {
42*00c7fec1SAndroid Build Coastguard Worker atrace_enabled_tags = atrace_get_property();
43*00c7fec1SAndroid Build Coastguard Worker }
44*00c7fec1SAndroid Build Coastguard Worker }
45*00c7fec1SAndroid Build Coastguard Worker
atrace_seq_number_changed(uint32_t prev_seq_no,uint32_t seq_no)46*00c7fec1SAndroid Build Coastguard Worker static void atrace_seq_number_changed(uint32_t prev_seq_no, uint32_t seq_no) {
47*00c7fec1SAndroid Build Coastguard Worker if (!atomic_load_explicit(&atrace_is_enabled, memory_order_acquire)) {
48*00c7fec1SAndroid Build Coastguard Worker return;
49*00c7fec1SAndroid Build Coastguard Worker }
50*00c7fec1SAndroid Build Coastguard Worker
51*00c7fec1SAndroid Build Coastguard Worker // Someone raced us.
52*00c7fec1SAndroid Build Coastguard Worker if (!atomic_compare_exchange_strong(&last_sequence_number, &prev_seq_no, seq_no)) {
53*00c7fec1SAndroid Build Coastguard Worker return;
54*00c7fec1SAndroid Build Coastguard Worker }
55*00c7fec1SAndroid Build Coastguard Worker
56*00c7fec1SAndroid Build Coastguard Worker if (CC_UNLIKELY(prev_seq_no == kSeqNoNotInit)) {
57*00c7fec1SAndroid Build Coastguard Worker #if defined(__BIONIC__)
58*00c7fec1SAndroid Build Coastguard Worker const prop_info* new_pi = __system_property_find("debug.atrace.tags.enableflags");
59*00c7fec1SAndroid Build Coastguard Worker if (new_pi) atrace_property_info = new_pi;
60*00c7fec1SAndroid Build Coastguard Worker #endif
61*00c7fec1SAndroid Build Coastguard Worker pthread_once(&atrace_once_control, atrace_init_once);
62*00c7fec1SAndroid Build Coastguard Worker }
63*00c7fec1SAndroid Build Coastguard Worker
64*00c7fec1SAndroid Build Coastguard Worker atrace_update_tags();
65*00c7fec1SAndroid Build Coastguard Worker }
66*00c7fec1SAndroid Build Coastguard Worker
atrace_setup()67*00c7fec1SAndroid Build Coastguard Worker void atrace_setup()
68*00c7fec1SAndroid Build Coastguard Worker {
69*00c7fec1SAndroid Build Coastguard Worker atrace_init();
70*00c7fec1SAndroid Build Coastguard Worker }
71*00c7fec1SAndroid Build Coastguard Worker
atrace_begin_body(const char * name)72*00c7fec1SAndroid Build Coastguard Worker void atrace_begin_body(const char* name)
73*00c7fec1SAndroid Build Coastguard Worker {
74*00c7fec1SAndroid Build Coastguard Worker WRITE_MSG("B|%d|", "%s", "", name, "");
75*00c7fec1SAndroid Build Coastguard Worker }
76*00c7fec1SAndroid Build Coastguard Worker
atrace_end_body()77*00c7fec1SAndroid Build Coastguard Worker void atrace_end_body()
78*00c7fec1SAndroid Build Coastguard Worker {
79*00c7fec1SAndroid Build Coastguard Worker WRITE_MSG("E|%d", "%s", "", "", "");
80*00c7fec1SAndroid Build Coastguard Worker }
81*00c7fec1SAndroid Build Coastguard Worker
atrace_async_begin_body(const char * name,int32_t cookie)82*00c7fec1SAndroid Build Coastguard Worker void atrace_async_begin_body(const char* name, int32_t cookie)
83*00c7fec1SAndroid Build Coastguard Worker {
84*00c7fec1SAndroid Build Coastguard Worker WRITE_MSG("S|%d|", "|%" PRId32, "", name, cookie);
85*00c7fec1SAndroid Build Coastguard Worker }
86*00c7fec1SAndroid Build Coastguard Worker
atrace_async_end_body(const char * name,int32_t cookie)87*00c7fec1SAndroid Build Coastguard Worker void atrace_async_end_body(const char* name, int32_t cookie)
88*00c7fec1SAndroid Build Coastguard Worker {
89*00c7fec1SAndroid Build Coastguard Worker WRITE_MSG("F|%d|", "|%" PRId32, "", name, cookie);
90*00c7fec1SAndroid Build Coastguard Worker }
91*00c7fec1SAndroid Build Coastguard Worker
atrace_async_for_track_begin_body(const char * track_name,const char * name,int32_t cookie)92*00c7fec1SAndroid Build Coastguard Worker void atrace_async_for_track_begin_body(const char* track_name, const char* name, int32_t cookie) {
93*00c7fec1SAndroid Build Coastguard Worker WRITE_MSG("G|%d|", "|%" PRId32, track_name, name, cookie);
94*00c7fec1SAndroid Build Coastguard Worker }
95*00c7fec1SAndroid Build Coastguard Worker
atrace_async_for_track_end_body(const char * track_name,int32_t cookie)96*00c7fec1SAndroid Build Coastguard Worker void atrace_async_for_track_end_body(const char* track_name, int32_t cookie) {
97*00c7fec1SAndroid Build Coastguard Worker WRITE_MSG("H|%d|", "|%" PRId32, "", track_name, cookie);
98*00c7fec1SAndroid Build Coastguard Worker }
99*00c7fec1SAndroid Build Coastguard Worker
atrace_instant_body(const char * name)100*00c7fec1SAndroid Build Coastguard Worker void atrace_instant_body(const char* name) {
101*00c7fec1SAndroid Build Coastguard Worker WRITE_MSG("I|%d|", "%s", "", name, "");
102*00c7fec1SAndroid Build Coastguard Worker }
103*00c7fec1SAndroid Build Coastguard Worker
atrace_instant_for_track_body(const char * track_name,const char * name)104*00c7fec1SAndroid Build Coastguard Worker void atrace_instant_for_track_body(const char* track_name, const char* name) {
105*00c7fec1SAndroid Build Coastguard Worker WRITE_MSG("N|%d|", "%s", track_name, name, "");
106*00c7fec1SAndroid Build Coastguard Worker }
107*00c7fec1SAndroid Build Coastguard Worker
atrace_int_body(const char * name,int32_t value)108*00c7fec1SAndroid Build Coastguard Worker void atrace_int_body(const char* name, int32_t value)
109*00c7fec1SAndroid Build Coastguard Worker {
110*00c7fec1SAndroid Build Coastguard Worker WRITE_MSG("C|%d|", "|%" PRId32, "", name, value);
111*00c7fec1SAndroid Build Coastguard Worker }
112*00c7fec1SAndroid Build Coastguard Worker
atrace_int64_body(const char * name,int64_t value)113*00c7fec1SAndroid Build Coastguard Worker void atrace_int64_body(const char* name, int64_t value)
114*00c7fec1SAndroid Build Coastguard Worker {
115*00c7fec1SAndroid Build Coastguard Worker WRITE_MSG("C|%d|", "|%" PRId64, "", name, value);
116*00c7fec1SAndroid Build Coastguard Worker }
117