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 #ifndef _POSIX_SOURCE
20 #define _POSIX_SOURCE
21 #endif
22
23 #ifndef _GNU_SOURCE
24 #define _GNU_SOURCE
25 #endif
26
27 #include <grpc/support/port_platform.h>
28
29 #ifdef GPR_LINUX_LOG
30
31 #include <grpc/support/alloc.h>
32 #include <grpc/support/log.h>
33 #include <grpc/support/time.h>
34 #include <inttypes.h>
35 #include <stdarg.h>
36 #include <stdio.h>
37 #include <string.h>
38 #include <sys/syscall.h>
39 #include <time.h>
40 #include <unistd.h>
41 #include <string>
42 #include "absl/strings/str_format.h"
43
sys_gettid(void)44 static long sys_gettid(void) { return syscall(__NR_gettid); }
45
gpr_log(const char * file,int line,gpr_log_severity severity,const char * format,...)46 void gpr_log(const char* file, int line, gpr_log_severity severity,
47 const char* format, ...) {
48 /* Avoid message construction if gpr_log_message won't log */
49 if (gpr_should_log(severity) == 0) {
50 return;
51 }
52 char* message = nullptr;
53 va_list args;
54 va_start(args, format);
55 if (vasprintf(&message, format, args) == -1) {
56 va_end(args);
57 return;
58 }
59 va_end(args);
60 gpr_log_message(file, line, severity, message);
61 /* message has been allocated by vasprintf above, and needs free */
62 free(message);
63 }
64
gpr_default_log(gpr_log_func_args * args)65 void gpr_default_log(gpr_log_func_args* args) {
66 const char* final_slash;
67 const char* display_file;
68 char time_buffer[64];
69 time_t timer;
70 gpr_timespec now = gpr_now(GPR_CLOCK_REALTIME);
71 struct tm tm;
72 static __thread long tid = 0;
73 if (tid == 0) tid = sys_gettid();
74
75 timer = static_cast<time_t>(now.tv_sec);
76 final_slash = strrchr(args->file, '/');
77 if (final_slash == nullptr)
78 display_file = args->file;
79 else
80 display_file = final_slash + 1;
81
82 if (!localtime_r(&timer, &tm)) {
83 strcpy(time_buffer, "error:localtime");
84 } else if (0 ==
85 strftime(time_buffer, sizeof(time_buffer), "%m%d %H:%M:%S", &tm)) {
86 strcpy(time_buffer, "error:strftime");
87 }
88
89 std::string prefix = absl::StrFormat(
90 "%s%s.%09" PRId32 " %7ld %s:%d]", gpr_log_severity_string(args->severity),
91 time_buffer, now.tv_nsec, tid, display_file, args->line);
92 fprintf(stderr, "%-60s %s\n", prefix.c_str(), args->message);
93 }
94
95 #endif /* GPR_LINUX_LOG */
96