1 /*
2 * Copyright (C) 2017 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 "chre/util/system/debug_dump.h"
18
19 #include <cstdio>
20
21 #include "chre/platform/log.h"
22
23 namespace chre {
24
debugDumpPrint(char * buffer,size_t * bufferPos,size_t bufferSize,const char * formatStr,...)25 void debugDumpPrint(char *buffer, size_t *bufferPos, size_t bufferSize,
26 const char *formatStr, ...) {
27 if (*bufferPos < bufferSize) {
28 va_list argList;
29 va_start(argList, formatStr);
30 int strLen = vsnprintf(&buffer[*bufferPos], bufferSize - *bufferPos,
31 formatStr, argList);
32 va_end(argList);
33
34 if (strLen >= 0) {
35 size_t strLenBytes = static_cast<size_t>(strLen);
36 if (bufferSize < strLenBytes ||
37 *bufferPos >= (bufferSize - strLenBytes)) {
38 *bufferPos = bufferSize;
39 buffer[bufferSize - 1] = '\0';
40 LOG_OOM();
41 } else {
42 *bufferPos += strLenBytes;
43 }
44 } else {
45 LOGE("Error formatting dump state");
46 }
47 }
48 }
49
50 } // namespace chre
51