1 /*
2 * Copyright (C) 2015 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 /*
18 * Implements ADB tracing inside the emulator.
19 */
20
21 #include <stdarg.h>
22
23 #include "sysdeps.h"
24 #include "qemu_tracing.h"
25
26 /*
27 * Redefine open and write for qemu_pipe.h that contains inlined references
28 * to those routines. We will redifine them back after qemu_pipe.h inclusion.
29 */
30
31 #undef open
32 #undef write
33 #define open adb_open
34 #define write adb_write
35 #include <hardware/qemu_pipe.h>
36 #undef open
37 #undef write
38 #define open ___xxx_open
39 #define write ___xxx_write
40
41 /* A handle to adb-debug qemud service in the emulator. */
42 int adb_debug_qemu = -1;
43
44 /* Initializes connection with the adb-debug qemud service in the emulator. */
adb_qemu_trace_init(void)45 int adb_qemu_trace_init(void)
46 {
47 char con_name[32];
48
49 if (adb_debug_qemu >= 0) {
50 return 0;
51 }
52
53 /* adb debugging QEMUD service connection request. */
54 snprintf(con_name, sizeof(con_name), "qemud:adb-debug");
55 adb_debug_qemu = qemu_pipe_open(con_name);
56 return (adb_debug_qemu >= 0) ? 0 : -1;
57 }
58
adb_qemu_trace(const char * fmt,...)59 void adb_qemu_trace(const char* fmt, ...)
60 {
61 va_list args;
62 va_start(args, fmt);
63 char msg[1024];
64
65 if (adb_debug_qemu >= 0) {
66 vsnprintf(msg, sizeof(msg), fmt, args);
67 adb_write(adb_debug_qemu, msg, strlen(msg));
68 }
69 }
70