diff options
Diffstat (limited to 'libcutils/trace-dev.cpp')
-rw-r--r-- | libcutils/trace-dev.cpp | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/libcutils/trace-dev.cpp b/libcutils/trace-dev.cpp new file mode 100644 index 000000000..4da821555 --- /dev/null +++ b/libcutils/trace-dev.cpp | |||
@@ -0,0 +1,79 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2012 The Android Open Source Project | ||
3 | * | ||
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | ||
5 | * you may not use this file except in compliance with the License. | ||
6 | * You may obtain a copy of the License at | ||
7 | * | ||
8 | * http://www.apache.org/licenses/LICENSE-2.0 | ||
9 | * | ||
10 | * Unless required by applicable law or agreed to in writing, software | ||
11 | * distributed under the License is distributed on an "AS IS" BASIS, | ||
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
13 | * See the License for the specific language governing permissions and | ||
14 | * limitations under the License. | ||
15 | */ | ||
16 | |||
17 | #include <cutils/trace.h> | ||
18 | |||
19 | #include "trace-dev.inc" | ||
20 | |||
21 | static pthread_once_t atrace_once_control = PTHREAD_ONCE_INIT; | ||
22 | |||
23 | // Set whether tracing is enabled in this process. This is used to prevent | ||
24 | // the Zygote process from tracing. | ||
25 | void atrace_set_tracing_enabled(bool enabled) | ||
26 | { | ||
27 | atomic_store_explicit(&atrace_is_enabled, enabled, memory_order_release); | ||
28 | atrace_update_tags(); | ||
29 | } | ||
30 | |||
31 | static void atrace_init_once() | ||
32 | { | ||
33 | atrace_marker_fd = open("/sys/kernel/debug/tracing/trace_marker", O_WRONLY | O_CLOEXEC); | ||
34 | if (atrace_marker_fd == -1) { | ||
35 | ALOGE("Error opening trace file: %s (%d)", strerror(errno), errno); | ||
36 | atrace_enabled_tags = 0; | ||
37 | goto done; | ||
38 | } | ||
39 | |||
40 | atrace_enabled_tags = atrace_get_property(); | ||
41 | |||
42 | done: | ||
43 | atomic_store_explicit(&atrace_is_ready, true, memory_order_release); | ||
44 | } | ||
45 | |||
46 | void atrace_setup() | ||
47 | { | ||
48 | pthread_once(&atrace_once_control, atrace_init_once); | ||
49 | } | ||
50 | |||
51 | void atrace_begin_body(const char* name) | ||
52 | { | ||
53 | WRITE_MSG("B|%d|", "%s", name, ""); | ||
54 | } | ||
55 | |||
56 | void atrace_end_body() | ||
57 | { | ||
58 | WRITE_MSG("E|%d", "%s", "", ""); | ||
59 | } | ||
60 | |||
61 | void atrace_async_begin_body(const char* name, int32_t cookie) | ||
62 | { | ||
63 | WRITE_MSG("S|%d|", "|%" PRId32, name, cookie); | ||
64 | } | ||
65 | |||
66 | void atrace_async_end_body(const char* name, int32_t cookie) | ||
67 | { | ||
68 | WRITE_MSG("F|%d|", "|%" PRId32, name, cookie); | ||
69 | } | ||
70 | |||
71 | void atrace_int_body(const char* name, int32_t value) | ||
72 | { | ||
73 | WRITE_MSG("C|%d|", "|%" PRId32, name, value); | ||
74 | } | ||
75 | |||
76 | void atrace_int64_body(const char* name, int64_t value) | ||
77 | { | ||
78 | WRITE_MSG("C|%d|", "|%" PRId64, name, value); | ||
79 | } | ||