1 /*
2 *
3 * Copyright 2015 gRPC authors.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 */
18
19 #include <grpc/support/port_platform.h>
20
21 #ifdef GPR_POSIX_LOG
22
23 #include <grpc/support/alloc.h>
24 #include <grpc/support/log.h>
25 #include <grpc/support/string_util.h>
26 #include <grpc/support/time.h>
27 #include <pthread.h>
28 #include <stdarg.h>
29 #include <stdio.h>
30 #include <string.h>
31 #include <time.h>
32
gettid(void)33 static intptr_t gettid(void) { return (intptr_t)pthread_self(); }
34
gpr_log(const char * file,int line,gpr_log_severity severity,const char * format,...)35 void gpr_log(const char* file, int line, gpr_log_severity severity,
36 const char* format, ...) {
37 /* Avoid message construction if gpr_log_message won't log */
38 if (gpr_should_log(severity) == 0) {
39 return;
40 }
41 char buf[64];
42 char* allocated = nullptr;
43 char* message = nullptr;
44 int ret;
45 va_list args;
46 va_start(args, format);
47 ret = vsnprintf(buf, sizeof(buf), format, args);
48 va_end(args);
49 if (ret < 0) {
50 message = nullptr;
51 } else if ((size_t)ret <= sizeof(buf) - 1) {
52 message = buf;
53 } else {
54 message = allocated = (char*)gpr_malloc((size_t)ret + 1);
55 va_start(args, format);
56 vsnprintf(message, (size_t)(ret + 1), format, args);
57 va_end(args);
58 }
59 gpr_log_message(file, line, severity, message);
60 gpr_free(allocated);
61 }
62
gpr_default_log(gpr_log_func_args * args)63 void gpr_default_log(gpr_log_func_args* args) {
64 const char* final_slash;
65 const char* display_file;
66 char time_buffer[64];
67 time_t timer;
68 gpr_timespec now = gpr_now(GPR_CLOCK_REALTIME);
69 struct tm tm;
70
71 timer = (time_t)now.tv_sec;
72 final_slash = strrchr(args->file, '/');
73 if (final_slash == nullptr)
74 display_file = args->file;
75 else
76 display_file = final_slash + 1;
77
78 if (!localtime_r(&timer, &tm)) {
79 strcpy(time_buffer, "error:localtime");
80 } else if (0 ==
81 strftime(time_buffer, sizeof(time_buffer), "%m%d %H:%M:%S", &tm)) {
82 strcpy(time_buffer, "error:strftime");
83 }
84
85 char* prefix;
86 gpr_asprintf(&prefix, "%s%s.%09d %7tu %s:%d]",
87 gpr_log_severity_string(args->severity), time_buffer,
88 (int)(now.tv_nsec), gettid(), display_file, args->line);
89
90 fprintf(stderr, "%-70s %s\n", prefix, args->message);
91 gpr_free(prefix);
92 }
93
94 #endif /* defined(GPR_POSIX_LOG) */
95