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. */
42int   adb_debug_qemu = -1;
43
44/* Initializes connection with the adb-debug qemud service in the emulator. */
45int 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
59void 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